Yangzhou Jingcheng Electronics Co., Ltd. is professional in designing, developing, producing, sales and service of RF (Radio Frequency) coaxial connectors.
Reliable radio-frequency interconnection begins with choosing a connector that matches the cable, frequency environment, mechanical layout, installation method, and long-term service requirements. The JC3.650.031A SMB-C-KW1.5 Overall is an SMB RF coaxial connector intended for flexible cable applications. It belongs to a connector family designed to provide compact, practical, and repeatable connections in RF assemblies where space, signal integrity, and assembly consistency are important.
SMB connectors are widely used in communications equipment, test instruments, wireless devices, navigation systems, industrial electronics, monitoring equipment, and other applications that require a small coaxial interface. Compared with larger connector families, the SMB format supports a more compact equipment layout while maintaining a practical RF connection architecture. The JC3.650.031A is therefore relevant to engineers, purchasing teams, cable assembly manufacturers, system integrators, and maintenance personnel seeking a flexible-cable connector for professional RF applications.
This article examines the product’s role, construction considerations, application value, selection criteria, assembly factors, quality expectations, and the manufacturing strengths of Yangzhou Jingcheng Electronics Co., Ltd. The discussion focuses on responsible product evaluation. Since detailed electrical ratings, cable compatibility tables, plating specifications, dimensional drawings, and environmental classifications should be confirmed from the latest technical documentation, users should request formal datasheets and samples before final approval.
Content
The JC3.650.031A SMB-C-KW1.5 Overall is identified as an SMB RF coaxial connector for flexible cable. The product name indicates an SMB interface configuration and a cable-oriented design intended for integration with flexible coaxial cable. The “overall” designation may refer to an overall product view or a particular configuration within the manufacturer’s internal naming system; the exact interpretation should be confirmed through the official drawing or product specification.
As an RF connector, its central purpose is to create a controlled electrical transition between a coaxial cable and another RF interface. A good connector must preserve the cable’s signal path, maintain reliable contact between mating conductors, control unwanted electromagnetic leakage, and withstand the mechanical conditions of assembly and use. The connector must also be compatible with the selected cable’s outer diameter, dielectric structure, center conductor, braid or shield, and preparation method.
The SMB interface is valued for its small size and convenient mating arrangement. It is commonly selected when equipment designers want a compact RF port without moving to a larger connector family. In flexible-cable applications, the connector can support short internal interconnections, board-to-cable transitions, front-panel wiring, compact modules, and serviceable cable assemblies.
| Item | Product Information | Engineering Significance |
|---|---|---|
| Model | JC3.650.031A SMB-C-KW1.5 Overall | Identifies the specific connector configuration for quotation, drawing review, sampling, and purchasing |
| Connector family | SMB | Provides a compact RF coaxial interface for suitable mating components |
| Application category | SMB RF coaxial connectors for flexible cable | Indicates that cable preparation and cable compatibility are central selection considerations |
| Primary function | RF signal connection between flexible coaxial cable and mating equipment | Supports controlled signal transfer in compact RF assemblies |
| Recommended evaluation | Review drawing, electrical ratings, materials, cable list, and samples | Ensures that the connector matches the actual application rather than only the interface name |
Modern electronic equipment is becoming smaller while supporting more communication channels, sensors, antennas, and high-speed signal paths. This creates a need for connectors that use limited panel and board space without sacrificing serviceability. The SMB interface occupies a useful position in this environment. It is smaller than many traditional RF connector formats and can be integrated into dense assemblies where a larger connector would create unnecessary mechanical constraints.
Compactness is not the only reason to choose SMB. A standardized mating interface allows designers to create modular systems, replace cable assemblies, and simplify maintenance. When a connector family is widely recognized, engineers can source compatible mating parts, adapters, test cables, and replacement assemblies from multiple qualified suppliers. This helps reduce dependency on a single custom interface.
For flexible-cable applications, the connector must also accommodate the movement and routing characteristics of the cable. Flexible coaxial cable is often used where the cable must bend around equipment structures, connect moving modules, or fit into a tight enclosure. The connector design must provide a stable transition from a flexible cable to a rigid interface. Proper cable support, shielding continuity, strain control, and termination quality are essential to prevent the cable from being damaged at the connector entry point.
The JC3.650.031A is relevant in precisely this type of application. Its value is not simply that it carries an SMB name. Its value depends on how effectively the complete connector-and-cable assembly maintains electrical and mechanical performance after termination, installation, mating, unmating, vibration, temperature exposure, and routine service.
The SMB format supports compact equipment design. In comparison with larger RF connector families, an SMB assembly can help reduce the space allocated to cable ports, internal cable routing, and panel interfaces. This can be especially useful in wireless modules, instrumentation, signal distribution assemblies, embedded control units, and compact communications equipment.
Space savings may benefit more than the enclosure outline. Smaller connectors can allow designers to place signal channels closer together, shorten cable routes, and reduce the need for bulky mechanical brackets. Shorter interconnections can simplify assembly and may reduce opportunities for cable entanglement or excessive bending. These benefits are most valuable when the connector is selected together with an appropriate cable and a carefully controlled termination process.
A connector designed for flexible cable is different from a generic RF connector that merely happens to accept a coaxial cable. The cable interface must account for the cable’s physical dimensions and construction. The center conductor, dielectric, shield, and jacket each require a controlled preparation sequence. A suitable connector configuration can make the stripping, crimping, soldering, or other approved termination process more consistent.
The JC3.650.031A is categorized specifically for flexible cable. This gives engineers a useful starting point when developing a cable assembly. However, the exact cable list must still be confirmed. Flexible coaxial cables vary substantially in outer diameter, dielectric material, shield structure, conductor size, and minimum bend radius. A connector that fits one cable may not be suitable for another cable even if both are described generally as flexible coaxial cable.
In professional equipment, connectors may be mated during production, tested several times during quality inspection, disconnected during field service, and reconnected during maintenance. An SMB interface offers a practical mating solution for equipment that requires repeatable connection and disconnection. Consistent mechanical engagement helps reduce uncertainty during assembly and service.
Repeatability depends on the complete interface system. The mating connector must be compatible, the contacts must be clean and undamaged, and the cable assembly must be properly terminated. Operators should avoid applying side loads to the connector and should use the recommended mating method. The product’s official specification should be consulted for mating-cycle expectations, coupling details, torque or insertion guidance, and inspection criteria.
Standardized RF interfaces provide advantages during product development and procurement. Engineers can design around a recognized interface, compare compatible components, and use established testing equipment. Manufacturing teams can create repeatable work instructions, while purchasing teams can define clear requirements for connector and cable assembly suppliers.
A standardized interface also supports product upgrades. If a design later requires a different cable length, shielding arrangement, or equipment layout, the connector family may remain unchanged while the cable assembly is modified. This can reduce redesign effort, provided that the new cable and connector configuration remain electrically and mechanically compatible.
Many RF applications require more than an off-the-shelf catalog item. Cable length, cable type, connector orientation, plating, packaging, labeling, and inspection procedures may all vary by project. A manufacturer with design and production capabilities can help customers evaluate these requirements and develop a standard or customized solution.
Yangzhou Jingcheng Electronics Co., Ltd. describes its product range as including more than 2,000 types of connectors and related RF products. A broad product portfolio can be advantageous because customers may source multiple interface families, adapters, cable assemblies, attenuators, terminal loads, antennas, and protective products from one experienced supplier. The practical benefit is a more coordinated approach to RF interconnection rather than isolated purchasing of individual parts.
JC3.650.031A SMB-C-KW1.5 Overall
An RF connector must be evaluated as part of a signal path rather than as an isolated metal component. The electrical behavior of the JC3.650.031A assembly will depend on the connector geometry, cable construction, mating interface, termination method, equipment layout, and operating frequency. Important performance parameters may include characteristic impedance, frequency range, insertion loss, return loss, voltage standing wave ratio, insulation resistance, dielectric withstand voltage, and shielding effectiveness.
Characteristic impedance is one of the first factors to confirm. A coaxial system is designed around a nominal impedance, commonly 50 ohms in many RF applications. The connector, cable, adapter, and equipment port should be selected for the same system impedance unless a deliberate impedance transformation is required. An impedance mismatch can create reflections that reduce delivered power, distort measurements, and increase standing-wave behavior.
Return loss and VSWR provide related information about how much of the signal is reflected at an interface. A well-designed connector and properly terminated cable assembly can help maintain a stable transition between the cable and mating port. Poor stripping, an incorrectly positioned dielectric, damaged center contacts, incomplete shielding, or an unsuitable cable can degrade RF performance even when the connector itself is manufactured correctly.
Insertion loss is another important consideration. Every connector introduces some loss, and a system with multiple connectors, adapters, switches, and cable sections can accumulate significant attenuation. In compact equipment, designers should keep the number of transitions reasonable and select a connector with performance appropriate to the operating frequency. The product data sheet should be used to confirm the applicable frequency range and test conditions.
Shielding effectiveness is especially important in dense electronic environments. The outer conductor of a coaxial assembly helps contain the RF field and protect the signal from external interference. A connector must maintain continuity between the cable shield and the mating connector body. Gaps, poor crimp compression, damaged braid, or an improperly seated cable can create leakage paths. In systems carrying sensitive signals, these issues can affect measurement accuracy, receiver sensitivity, or electromagnetic compatibility.
Electrical specifications should be assessed under realistic conditions. A connector may show excellent laboratory performance when tested with a carefully prepared cable and ideal mating component, but the installed assembly may behave differently if the cable is bent sharply, routed near noisy circuits, or terminated inconsistently. For this reason, prototype testing should include the actual cable, cable length, equipment housing, mating connector, and operating environment.
Mechanical reliability begins with correct cable support. Flexible cable can transfer bending force to the connector if it is routed too tightly or pulled during installation. Over time, repeated movement may loosen the termination, deform the center contact, damage the shield, or cause intermittent signal behavior. The assembly should therefore follow the cable manufacturer’s minimum bend radius and use appropriate strain relief when the application involves movement or vibration.
Vibration and shock are common in transportation equipment, industrial machinery, outdoor electronics, and portable instruments. The connector should be reviewed for the environmental conditions of the target system. Relevant questions include whether the assembly is exposed to continuous vibration, intermittent shock, cable movement, panel flexing, or repeated service operations. The product’s official qualification information should be requested when vibration or shock performance is critical.
Temperature is another key factor. Materials, plating systems, cable jackets, and dielectric structures can respond differently to heating and cooling. Temperature changes may cause dimensional movement, alter contact force, and affect cable flexibility. If the connector is used near power components, engines, outdoor enclosures, or heated test equipment, the complete assembly should be evaluated across the intended temperature range.
Humidity, salt spray, dust, and chemical exposure can influence connector life. A connector that performs well in a clean indoor laboratory may require additional protection in a corrosive or contaminated environment. The application may call for sealed equipment, environmental covers, conformal protection, or a connector version with a suitable sealing arrangement. No environmental rating should be assumed solely from the SMB interface designation.
Material selection and surface treatment also affect long-term performance. Contact materials must provide stable conductivity and appropriate mechanical resilience. Connector bodies must offer adequate strength and corrosion resistance for the intended environment. Plating choices influence contact resistance, wear, solderability, and resistance to oxidation. These details should be confirmed in the product documentation and matched to the system’s service conditions.
Correct cable compatibility is one of the most important factors when selecting the JC3.650.031A. The connector should be matched to a defined cable family rather than selected only by nominal appearance. Engineers should confirm the cable’s outer diameter, center conductor size, dielectric diameter, shield type, jacket material, and preparation dimensions.
The cable’s shield may consist of braided wire, foil, multiple braids, or a combined shield structure. Each arrangement can require a different termination method. A connector designed for one shield configuration may not provide proper mechanical retention or electrical continuity with another. The connector’s cable interface should therefore be reviewed against the manufacturer’s approved cable list or assembly drawing.
Termination method also affects performance. Depending on the connector configuration, the cable may be attached through crimping, soldering, or another controlled technique. Crimp termination can support high production consistency when the correct die, tooling, strip dimensions, and applied force are used. Solder termination can be useful for selected cable designs but requires heat control and careful prevention of excess solder or dielectric damage.
Preparation dimensions should be treated as controlled manufacturing data. An incorrect strip length can expose too much conductor, leave insufficient shield engagement, or alter the position of the dielectric. Any of these conditions can affect impedance and mechanical strength. Production operators should use calibrated tools, approved work instructions, first-piece inspection, and periodic process verification.
Pull testing can help assess mechanical retention. Visual inspection should verify that the shield is properly captured, the jacket is supported, the center contact is correctly positioned, and the connector body is not damaged. Electrical tests may include continuity, insulation resistance, dielectric withstand, return loss, and insertion loss, depending on the application.
For low-volume prototypes, engineers should avoid relying on hand assembly without documented preparation dimensions. A prototype cable that works during an initial continuity check may still show poor RF performance at the target frequency. Early vector network analyzer testing or equivalent RF verification can reveal problems before the design reaches volume production.
Yangzhou Jingcheng Electronics Co., Ltd. was founded in 1999 and specializes in the design, development, production, sales, and service of RF coaxial connectors and related products. This long-term focus is relevant to customers seeking a supplier with experience across both standard and specialized RF interconnection requirements.
The company reports a product portfolio of more than 2,000 types. This range includes coaxial connectors, adapters, reverse polarity connectors, coaxial lightning protectors, high-frequency cables and cable assemblies, attenuators, terminal loads, antennas, and other related products. A broad portfolio can support more complete project sourcing and may simplify the process of matching connector interfaces across an equipment platform.
Product variety is valuable only when supported by disciplined manufacturing. RF connectors require accurate machining, consistent forming, reliable contact assembly, controlled plating, careful dielectric handling, and thorough inspection. Small dimensional changes can influence mating force, impedance, return loss, and mechanical retention. A capable manufacturer must therefore coordinate product design, tooling, production, assembly, testing, and quality control.
The company describes itself as having advanced manufacturing and testing equipment, strong technical capabilities, rigorous quality systems, and professional research and development and engineering teams. These strengths can contribute to several practical customer benefits. Manufacturing equipment supports repeatable dimensions and efficient production. Testing equipment helps verify electrical and mechanical performance. Quality systems provide documented procedures for incoming materials, in-process inspection, final testing, and traceability. Engineering teams help translate application requirements into a suitable connector or assembly configuration.
RF connector design requires attention to both electrical geometry and mechanical practicality. The center conductor, dielectric support, outer conductor, mating surfaces, and cable interface must work together. Engineering teams can review cable specifications, enclosure constraints, mating requirements, target frequency, and environmental conditions before recommending a product.
For projects using the JC3.650.031A, engineering support may include drawing confirmation, cable matching, termination guidance, prototype review, sample preparation, and production documentation. Customers should provide as much application information as possible, including the intended cable, frequency range, impedance, installation environment, quantity, and required approvals.
Connector bodies and contacts often require controlled machining or forming processes. Dimensional consistency is necessary to maintain mating compatibility and RF geometry. Production controls should address raw material verification, tool condition, dimensional inspection, burr removal, surface treatment, assembly cleanliness, and final appearance.
In a competitive connector market, precision manufacturing is an important differentiator. A low-cost connector that has inconsistent dimensions may create higher system costs through assembly delays, field failures, retesting, or replacement. A supplier focused on repeatability can help reduce these risks by maintaining defined process parameters and inspection standards.
Quality assurance for RF connectors should include more than visual inspection. Depending on the product and application, testing may cover dimensional accuracy, mechanical engagement, contact continuity, insulation resistance, dielectric withstand, insertion loss, return loss, voltage standing-wave ratio, pull strength, vibration, temperature, and environmental resistance.
The exact inspection plan should be agreed upon with the customer. Some applications need a basic production inspection, while others require detailed electrical reports, lot traceability, first-article approval, or environmental qualification. Customers purchasing the JC3.650.031A should request the applicable test standards, acceptance criteria, sampling plan, and certificate information.
Customers often need a combination of standard catalog products and customized cable assemblies. A supplier that handles both can reduce coordination between multiple vendors. Custom requirements may involve cable length, connector orientation, packaging, labeling, cable type, plating, or special inspection. Before production, these requirements should be documented in a controlled drawing or purchase specification.
Customization should not be confused with informal modification. Any change to a connector configuration should be evaluated for mechanical, electrical, and manufacturing consequences. A professional supplier should clarify which features are standard, which are configurable, and which require new tooling or engineering approval.
The JC3.650.031A should be compared with alternatives according to application requirements rather than price alone. Different RF connector families offer different combinations of size, mating style, power capability, frequency range, environmental sealing, and ease of installation.
Larger connector families may provide greater mechanical strength or higher power handling, but they can consume more space and add weight. Smaller connector families may reduce size further, but they may have different mating arrangements, lower mechanical robustness, or more limited cable options. The SMB format can represent a practical compromise for compact RF connections where a recognized and serviceable interface is desired.
| Evaluation Area | SMB Flexible-Cable Approach | Potential Alternative Consideration |
|---|---|---|
| Equipment size | Compact interface suitable for space-sensitive assemblies | Larger interfaces may require more panel or board area |
| Cable integration | Designed around suitable flexible coaxial cable configurations | Some alternatives may support different cable sizes or termination methods |
| Serviceability | Recognized RF interface suitable for replaceable cable assemblies | Permanent soldered connections may be smaller but less convenient to service |
| Mechanical demands | Appropriate when the SMB interface meets the application’s strength requirements | Ruggedized or threaded families may be preferred for severe vibration or frequent external handling |
| RF performance | Must be confirmed for the operating frequency and cable assembly | Alternative families may offer different high-frequency or low-loss characteristics |
| Procurement | Supported by a broad family of mating components and related RF products | Specialized interfaces may have fewer interchangeable sources |
Compared with a direct solder connection, a detachable SMB assembly provides easier replacement and testing. Compared with a large threaded connector, it can reduce size and simplify installation in compact equipment. Compared with an unverified low-cost connector, a product supported by established engineering and quality processes may offer better consistency and lower lifecycle risk.
These advantages should be validated through application testing. The best connector is the one that meets the complete set of requirements: electrical performance, mechanical retention, environmental durability, assembly cost, availability, and serviceability.
Wireless communication equipment uses RF cables to connect radios, filters, antennas, modules, and test points. An SMB connector can be useful in internal interconnections where space is restricted and a replaceable cable connection is preferred. The JC3.650.031A may be considered for suitable flexible-cable assemblies after frequency and environmental requirements are confirmed.
Test equipment requires reliable and repeatable signal paths. Connectors may be mated during calibration, service, module replacement, and laboratory testing. A compact SMB cable assembly can support internal signal routing and selected external or semi-external connections. For measurement equipment, return loss, insertion loss, connector repeatability, and calibration compatibility deserve particular attention.
Industrial monitoring systems may use RF signals for sensing, wireless communication, telemetry, or machine condition monitoring. The connector must withstand the actual temperature, vibration, dust, and electromagnetic environment. If the equipment is installed in a cabinet or protected enclosure, an SMB flexible-cable connector may offer a practical internal interconnection solution.
Navigation and positioning equipment often depends on low-level RF signals from antennas or receiver modules. Signal loss and interference can affect system performance. A properly terminated coaxial assembly can help maintain the intended signal path, while the connector’s compact size can support dense electronic packaging.
Embedded modules may require a cable connection for an antenna, sensor, calibration port, or expansion interface. The connector must fit the available mechanical envelope and remain secure during assembly and service. The JC3.650.031A is relevant where the mating interface and cable dimensions align with the module design.
Because Yangzhou Jingcheng Electronics Co., Ltd. also offers high-frequency cables and cable assemblies, customers can discuss the connector and cable as an integrated product. This can help ensure that connector selection, cable preparation, assembly tooling, and electrical testing are coordinated. A complete assembly approach is often more reliable than purchasing a connector separately and leaving cable termination to an unqualified process.
A structured selection process reduces the risk of choosing a connector based only on the interface name. The first step is to define the electrical requirements. These should include nominal impedance, operating frequency, maximum input power, expected insertion loss, return loss or VSWR target, and any shielding or electromagnetic compatibility requirements.
The second step is to define the cable. Specify the cable manufacturer and part number when possible. Record the outer diameter, conductor size, dielectric diameter, shield construction, jacket material, bend radius, and temperature range. If the cable is still under development, obtain representative samples for connector fit and termination testing.
The third step is to confirm the mechanical interface. Identify the mating SMB connector, mounting arrangement, available space, cable exit direction, retention requirements, and expected mating cycles. Check whether the application requires a straight, right-angle, bulkhead, board-mount, or cable-mount configuration.
The fourth step is to define the environment. Consider temperature, humidity, vibration, shock, dust, salt exposure, chemical contact, indoor or outdoor installation, and service access. Also identify whether the connector will be exposed directly to the environment or protected inside an enclosure.
The fifth step is to establish the production method. Determine whether the assembly will be made manually, semi-automatically, or through automated equipment. Confirm the necessary stripping tools, crimp dies, soldering equipment, gauges, fixtures, and inspection instruments. A connector may be technically suitable but economically impractical if its termination requires an unavailable process.
The sixth step is to validate samples. Sample evaluation should include physical fit, mating, cable retention, continuity, insulation testing, RF measurement, and installation review. If the system is sensitive, test the assembly in the actual equipment and under representative routing conditions.
Purchasers should define clear acceptance criteria before placing a production order. The purchase specification can identify the exact model, approved drawing revision, cable type, quantity, packaging, labeling, inspection requirements, and required documentation.
Incoming inspection may include visual examination, dimensional checks, mating verification, continuity, insulation resistance, and sample-based RF testing. The inspection level should reflect the product’s risk and application importance. For critical communication or measurement equipment, a higher level of traceability may be justified.
Packaging should protect the connector from moisture, dust, impact, and contamination. Contacts and mating surfaces should remain clean during storage. Parts should not be stored in conditions that cause corrosion or degrade cable jackets. If the product is supplied as a cable assembly, the cable should be protected from sharp bends and compression.
Traceability is useful when a connector is installed in a long-life product. Lot codes, production dates, inspection records, material information, and approved process documentation can help identify the source of any later issue. Customers should discuss the required traceability level with the supplier before mass production.
Supplier communication is also part of quality control. If the customer changes the cable, frequency, enclosure, termination tool, or installation method, the connector assembly should be reevaluated. A change that appears minor may influence RF performance or mechanical reliability.
Before installation, inspect the connector and cable assembly for contamination, deformation, loose parts, damaged threads or coupling features, and incorrect cable routing. Do not force incompatible mating components together. Confirm that the mating interface is the correct SMB configuration and that the connector is aligned before engagement.
Keep the cable near the connector properly supported. Avoid pulling the cable directly during installation. Do not exceed the specified bend radius, and avoid twisting the connector body to compensate for an incorrectly routed cable. If the application includes movement, provide a controlled service loop or strain-relief arrangement where appropriate.
During maintenance, disconnect the assembly using the recommended method. Protect open connectors with suitable caps or covers when the equipment is exposed to dust or moisture. Clean contacts only with approved methods and materials. Excessive mechanical cleaning can damage plating or alter the contact surface.
If intermittent RF behavior occurs, inspect the connector before replacing other system components. Possible causes include incomplete mating, cable damage, excessive bending, shield discontinuity, a deformed center contact, contamination, or a failed termination. Test continuity first, followed by insulation and RF measurements as appropriate.
The value of an RF connector should be considered across the complete product lifecycle. A reliable connector can reduce rework, field replacement, equipment downtime, and discarded cable assemblies. A serviceable SMB connection may allow technicians to replace a cable without replacing an entire module, provided that the equipment design supports safe access.
Long-term value also depends on consistent supply. A manufacturer with a broad product range and established engineering capability may help customers maintain products over multiple production cycles. However, customers should still request confirmation of product continuity, change-notification procedures, and replacement compatibility for long-life programs.
Material and plating information can support environmental compliance and responsible procurement. Customers should request applicable declarations and documentation when their industry requires restricted-substance control, recycling information, or formal supplier compliance records.
Yangzhou Jingcheng Electronics Co., Ltd. provides RF coaxial connectors and related products from its operations in Yangzhou, Jiangsu Province, China. The company’s stated capabilities include product design, development, manufacturing, sales, service, engineering, and testing. Its product scope covers standard and customized interconnection requirements.
For a quotation or technical review, customers should provide the JC3.650.031A model number together with the intended application details. Useful information includes the required quantity, cable model, cable length, mating connector, operating frequency, impedance, installation environment, and target delivery schedule.
If the product is intended for a new design, customers should request a current drawing and technical datasheet. They should also ask whether the specified model is available with a matching cable assembly, what termination tooling is required, which electrical tests are available, and whether samples can be supplied for qualification.
For customized requirements, the customer should prepare a controlled specification. This document may include dimensional tolerances, cable preparation dimensions, labeling, packaging, performance limits, inspection procedures, and approval criteria. Clear documentation helps prevent misunderstandings between design, purchasing, production, and quality teams.
Communication should continue after the initial sample. Feedback from assembly trials, RF testing, environmental testing, and field installation can help the manufacturer refine the production process or recommend a related configuration. This collaborative approach is especially valuable when the application has unusual cable, space, or environmental requirements.
The JC3.650.031A SMB-C-KW1.5 Overall is an SMB RF coaxial connector categorized for flexible cable. It is intended to connect a suitable flexible coaxial cable to a compatible SMB mating interface. The exact cable compatibility, electrical ratings, dimensions, and termination method should be confirmed through the current manufacturer documentation.
SMB refers to a compact RF coaxial connector interface family. SMB connectors are commonly used in communications, instrumentation, industrial electronics, and other applications where a relatively small, serviceable RF connection is required. The complete mating specification should be checked before selecting a connector.
No. Flexible coaxial cables differ in outer diameter, conductor size, dielectric dimensions, shield construction, and jacket material. The JC3.650.031A should be matched to an approved or confirmed cable type. Customers should request a cable compatibility list or assembly drawing before production.
It may be suitable for an appropriate high-frequency application, but the usable frequency range and RF performance must be confirmed from the official datasheet. The final result also depends on cable type, termination quality, mating condition, routing, and the number of connectors in the signal path.
Customers should request characteristic impedance, frequency range, insertion loss, return loss or VSWR, insulation resistance, dielectric withstand voltage, contact resistance, and any applicable power rating. Test conditions and tolerances are important because specifications without test conditions may be difficult to compare.
Outdoor suitability cannot be assumed from the SMB designation. The customer must review sealing, environmental protection, temperature range, corrosion resistance, cable jacket compatibility, and installation requirements. If the connector is placed inside a sealed enclosure, the overall equipment design may provide the necessary protection, but this should still be verified.
The main potential advantages are compact size, efficient use of panel or internal equipment space, practical integration with flexible cable, and convenient use in dense assemblies. A larger connector may still be preferable when the application requires greater mechanical strength, higher power capability, or more robust external handling.
An SMB cable connection can provide easier replacement, testing, servicing, and modular assembly. A permanent solder connection may reduce part count or size in some designs, but it is generally less convenient to disconnect and replace during maintenance.
The applicable termination method depends on the exact connector configuration and approved cable. It may involve crimping, soldering, or another controlled process. Customers should use the manufacturer’s recommended strip dimensions, tools, fixtures, and inspection requirements rather than developing an unverified process.
Poor assembly can create impedance discontinuities, reflections, insertion loss, shielding gaps, intermittent contacts, and mechanical weakness. Incorrect strip length, damaged dielectric, incomplete shield capture, excessive solder, or a deformed center contact can all reduce performance.
At minimum, production testing may include visual inspection and continuity. Depending on the application, it may also include insulation resistance, dielectric withstand, cable retention, insertion loss, return loss, VSWR, and shielding or environmental testing. The test plan should be based on the system’s risk and performance requirements.
The company states that it provides standard, customized, and specialized interconnection solutions. Customization may involve cable assemblies, dimensions, materials, plating, cable length, orientation, labeling, packaging, or inspection. Each custom requirement should be reviewed and documented before approval.
An inquiry should include the product model, quantity, cable specification, cable length, mating interface, frequency range, impedance, environmental conditions, application description, required documentation, and target delivery schedule. Drawings, photographs, or samples can help clarify the intended configuration.
Yangzhou Jingcheng Electronics Co., Ltd. is located at No. 140 Jinshan Road, Bali Industrial Park, South Yangtze River Road, Yangzhou Economic Development Zone, Yangzhou City, Jiangsu Province, China. The company provides RF connector and related product development, manufacturing, sales, and service.
The JC3.650.031A SMB-C-KW1.5 Overall is a compact SMB RF coaxial connector for flexible cable applications. Its potential value comes from the combination of a recognized compact interface, flexible-cable integration, serviceable connection, and suitability for dense RF equipment. It can be considered for communications, instrumentation, industrial, navigation, monitoring, embedded electronics, and cable assembly projects where the SMB interface matches the system requirements.
Its performance should be judged as part of a complete cable assembly. Correct cable selection, controlled preparation, proper termination, suitable mating, reliable shielding, and application-specific testing are essential. A connector with the correct model designation cannot compensate for an incompatible cable or an uncontrolled assembly process.
Yangzhou Jingcheng Electronics Co., Ltd. adds value through its long experience in RF interconnection, broad portfolio of more than 2,000 related products, stated manufacturing and testing capabilities, quality systems, and engineering resources. These strengths can help customers move from component selection to a more complete and reliable interconnection solution.
For final approval, customers should obtain current technical documents, verify all electrical and mechanical specifications, test representative samples, and define production acceptance criteria. When these steps are followed, the JC3.650.031A can serve as a practical option for compact, flexible-cable RF assemblies that require consistent connectivity and professional manufacturing support.
1. International Electrotechnical Commission, RF connector terminology, interface principles, and applicable coaxial connector test methods.
2. Institute of Electrical and Electronics Engineers, guidance on RF transmission lines, impedance matching, return loss, and coaxial interconnection performance.
3. Manufacturer technical documentation for the JC3.650.031A SMB-C-KW1.5 Overall, including current drawings, cable compatibility information, electrical specifications, and assembly instructions.
4. Manufacturer product information covering SMB RF coaxial connectors, adapters, reverse polarity connectors, coaxial lightning protectors, high-frequency cables, cable assemblies, attenuators, terminal loads, and antennas.
5. General engineering practice for coaxial cable preparation, crimp and solder termination, connector inspection, cable routing, strain relief, and RF assembly qualification.
6. Application-specific quality standards for electronic components, cable assemblies, environmental testing, traceability, and supplier process control.
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