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SMB RF Coaxial Connectors for Flexible Cable Custom

Home / Products / Coaxial Connectors / SMB RF Coaxial Connectors / SMB RF Coaxial Connectors for Flexible Cable

Yangzhou Jingcheng Electronics Co., Ltd.
  • Coaxial Connectors
  • Coaxial Lightning Protector
  • Reverse Polarity Connectors
Yangzhou Jingcheng Electronics Co., Ltd.
Yangzhou Jingcheng Electronics Co., Ltd.

SMB RF Coaxial Connectors for Flexible Cable Manufacturer

Product Introduction:
This is the most commonly used model in the SMB series, widely compatible with flexible cables such as RG174, RG178, RG316, and LMR100. It is a standard choice for wireless communication and instrumentation interconnection.

Product Features:
Fast assembly: Adopts a crimp-type structure, which, when used with professional crimping tools, enables efficient production line assembly.
Lightweight structure: Extremely low weight and compact size, making it ideal for handheld test instruments and mobile radio equipment.
Low loss: Insertion loss is only 0.30 dB at 1.5 GHz.

Application Advantages:
Convenient routing: When used with flexible cables, it can easily navigate complex internal chassis structures.
High cost performance: Suitable for large-volume procurement and general civilian RF system wiring requirements.

Temperature  Range

-55～+155℃(PE Cable   -40～+85℃)

Impedance

50Ω,75Ω

Frequency Range

 DC～4GHz(50Ω);0～2GHz(75Ω)

Insulation resistance

≥1000MΩ

Insertion loss

 0.30  dB/1.5GHz

Voltage Standing Wave Ratio (VSWR)

Straight ≤1.35/3GHz

       

Right  angle ≤1.45/3GHz

Durability(mating)

≥500 cycles

About
Yangzhou Jingcheng Electronics Co., Ltd.
Yangzhou Jingcheng Electronics Co., Ltd.

Yangzhou Jingcheng Electronics Co., Ltd., a premier China SMB RF Coaxial Connectors for Flexible Cable Manufacturer and SMB RF Coaxial Connectors for Flexible Cable Supplier, was founded in 1999. It is a high-tech enterprise specializing in the R&D and manufacturing of RF coaxial connectors, cable assemblies, and passive microwave components.
Equipped with a comprehensive R&D and production system, the company has obtained international certifications including ISO9001. Adhering strictly to standards such as MIL, IEC and GB, we offer over 30 product series with more than 2,000 specifications, covering SMA, BNC, N-type and other mainstream models. Our products are widely applied in the fields of communications, aerospace, automotive electronics and beyond, and exported to many countries and regions across Europe, America and Asia.
We uphold the tenet of "Quality as the Foundation, Customers as the Core", committed to providing reliable interconnection solutions and professional services for global clients.

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SMB RF Coaxial Connectors for Flexible Cable Industry knowledge

SMB RF Coaxial Connectors for Flexible Cable are snap-on interface connectors designed for quick-mating, space-constrained RF and microwave signal paths. Built around a slotted outer contact and a rounded stud interface, SMB RF Coaxial Connectors for Flexible Cable allow push-on/pull-off mating without threading, which shortens assembly time on boards, harnesses, and test fixtures. Compared with threaded coupling styles, this connector family favors installation speed and repeatable positioning over torque-controlled retention, which is why SMB connectors are widely used on flexible, small-diameter coaxial cable rather than on rigid or high-power feeder lines.

Common Types and Characteristics

Type Interface Style Typical Impedance Key Characteristic
Straight Plug / Jack Snap-on, straight body 50 Ω Standard board-to-cable or cable-to-cable mating
Right Angle Plug / Jack Snap-on, 90° body 50 Ω Used where vertical clearance is limited
Bulkhead / Panel Mount Snap-on with panel nut or flange 50 Ω Fixed panel feed-through with rear cable connection
PCB Edge / End Launch Snap-on, board-mount pins 50 / 75 Ω Direct mounting onto PCB pads or edges
75 Ω Variant Snap-on, keyed body 75 Ω Used on video and broadcast-related signal lines

Across these variants, contact plating is typically gold or nickel, and outer shell materials are brass or beryllium copper for consistent spring-back on the snap interface. Dielectric is commonly PTFE, which supports stable performance from DC up to several GHz depending on cable size and connector design.

Application Scenarios and Selection Points

SMB RF Coaxial Connectors for Flexible Cable are commonly found in GPS and antenna feed lines, telecom base station internal wiring, automotive infotainment and telematics modules, instrumentation racks, and RF test jumper assemblies where connectors are mated and unmated frequently. The snap-on design suits internal chassis wiring and densely packed connector fields more than exposed outdoor runs, where a threaded or environmentally sealed connector is generally preferred.

When selecting a connector from this category, consider the following:

  • Cable compatibility: match the connector's center pin and crimp/clamp dimensions to the specific flexible cable size (e.g., RG174, RG316, RG178).
  • Impedance: confirm 50 Ω or 75 Ω to match the system, since the two are not interchangeable in signal-critical paths.
  • Mounting style: choose straight, right angle, bulkhead, or PCB mount based on available space and routing direction.
  • Mating cycles and retention: snap-on coupling is fast but has lower pull-off force than threaded interfaces, so mechanical loading on the connector should be considered.
  • Frequency range and VSWR requirement: verify the connector's rated frequency band and return loss figures against the application's operating range.

SMB vs. Related Connector Types

Connector Coupling Typical Use Relative Size
SMB Snap-on Internal wiring, frequent mating Small
SMA Threaded Test equipment, secure RF links Small
MCX Snap-on Space-limited board wiring Smaller than SMB
MMCX Snap-on, micro Miniature modules, wearable RF devices Smallest

SMB sits between SMA and MCX/MMCX in size and coupling strength: it is faster to mate than SMA, yet generally offers a firmer connection than the smaller snap-on families, which is why it remains a common choice for internal RF harnessing on flexible cable.

FAQ

Q: Can SMB connectors be mated and unmated repeatedly without performance loss?

A: The snap-on interface is designed for repeated cycling; however, mating life is finite and specified per connector series, so applications with very high cycle counts should check the rated number of mating cycles.

Q: What is the difference between 50 Ω and 75 Ω SMB connectors?

A: The two versions use different center pin and dielectric dimensions to match their respective impedance systems, and mixing them can cause impedance mismatch and signal reflection, so the impedance should always match the cable and system design.

Q: What flexible cable sizes are typically paired with SMB connectors?

A: SMB connectors are commonly terminated on small-diameter flexible coaxial cables such as RG174, RG316, and RG178, with the connector's crimp or clamp dimensions selected to match the cable's conductor and dielectric size.

Q: Are SMB connectors suitable for outdoor or high-vibration environments?

A: The snap-on interface is intended primarily for internal or protected wiring; for outdoor exposure or high-vibration mounting, a threaded or latch-locking connector with environmental sealing is generally a more suitable choice.

Yangzhou Jingcheng Electronics Co., Ltd. manufactures SMB RF Coaxial Connectors for Flexible Cable alongside a broader range of RF interconnect products, supported by in-house R&D, CNC precision machining, and network-analyzer-based testing to maintain dimensional and electrical consistency across production batches.