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SMB Bulkhead Mount RF Coaxial Connectors Custom

Home / Products / Coaxial Connectors / SMB RF Coaxial Connectors / SMB Bulkhead Mount RF Coaxial Connectors

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

SMB Bulkhead Mount RF Coaxial Connectors Manufacturer

Product Introduction:
This is an SMB connector with external threads and a fastening nut, specifically designed for bulkhead mounting through chassis panels, serving as an internal-to-external signal interconnection.

Product Features:
Sealing protection: An optional waterproof sealing ring (O-ring) is available to meet IP-rated sealing requirements in specific environments.
Flexible installation: Supports front or rear mounting, accommodating different panel thicknesses.
Wide temperature range: Maintains excellent electrical performance under extreme temperatures from -55°C to +155°C.

Application Advantages:
Robust structure: The nut fastening ensures the connector remains securely in place even when external cables are subjected to pulling forces.
Professional appearance: Provides a clean and professional panel interface for communication cabinets such as broadcast stations and radio facilities.

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 Bulkhead Mount RF Coaxial Connectors Manufacturer and SMB Bulkhead Mount RF Coaxial Connectors 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 Bulkhead Mount RF Coaxial Connectors Industry knowledge
Product Category

SMB Bulkhead Mount RF Coaxial Connectors

SMB Bulkhead Mount RF Coaxial Connectors are snap-on RF coaxial connectors secured through a flange or threaded structure to an equipment panel or enclosure wall. The core function of this category is to establish a detachable, repeatedly matable RF signal path across a panel, while providing mechanical retention and shield grounding between the cable and the internal circuitry. The connectors are compact and mate quickly, requiring no tools for connection, which suits applications with limited installation space and assembly-time requirements.

Core performance parameters for this series include a nominal impedance of 50Ω, an operating frequency range from DC to 4GHz (extendable to higher bands with certain structures), low insertion loss, and stable return loss and voltage standing wave ratio (VSWR). Contacts are typically phosphor bronze or beryllium copper with gold plating, and the insulator is commonly PTFE, supporting consistent electrical performance across repeated mating cycles. Housings are generally nickel-plated brass or stainless steel, and some models include an O-ring for improved water and dust sealing.

Yangzhou Jingcheng Electronics Co., Ltd has been engaged in the design, development, and production of RF coaxial connectors since 1999. SMB Bulkhead Mount RF Coaxial Connectors form part of the company's standardized product line, available in multiple flange configurations and mounting hole patterns, with customization options based on panel thickness, frequency range, and sealing requirements.

Common Types and Characteristics

Based on flange structure, sealing method, and retention design, SMB Bulkhead Mount RF Coaxial Connectors are generally grouped into the following types, allowing selection according to mounting hole pattern and operating environment.

Type Structural Characteristics Typical Application
Round Flange Bulkhead Single-hole round flange mounting, simple hole pattern, small panel footprint Instrument panels, communication equipment backplanes
Square Flange Bulkhead Four-hole square flange, higher mounting strength, improved torque resistance Vehicle-mounted equipment, panel mounting in vibration environments
Standard Detent Standard retention force, moderate mating force, mating life suited to routine use Test and measurement equipment, general RF interconnection
Limited Detent Increased retention force to reduce unintended disconnection from cable weight or vibration Portable equipment, high-vibration conditions
Sealed / O-ring Type O-ring fitted at the flange interface for improved water and dust sealing Outdoor equipment, antenna feed-through interfaces

Application Scenarios and Selection Points

Typical Applications

  • Panel signal interfaces on RF test and measurement equipment
  • Internal cascaded interconnection of base station and RF modules
  • Feed-through connection between GPS/GNSS antenna cable and main board
  • Panel feed-through interfaces on vehicle and avionics equipment
  • RF signal breakout points on wireless routers and terminal devices
  • Panel-mounted termination end of RF cable assemblies

Selection Points

  • Confirm impedance matching: select 50Ω or 75Ω according to system requirements
  • Verify that the operating frequency range covers the intended frequency band
  • Select flange length and thread specification according to panel thickness
  • Select round or square flange structure according to mounting hole pattern
  • Distinguish between plug and jack, and between male and female contact structure
  • Select a sealed model with O-ring for humid or outdoor environments
  • Select a limited-detent type in high-vibration conditions for increased retention

Comparison with Other Bulkhead Mount RF Connectors

The table below outlines structural and performance differences between SMB Bulkhead Mount RF Coaxial Connectors and other common bulkhead mount connector types for selection reference.

Connector Type Coupling Method Typical Frequency Range Form Factor Mounting Method
SMB Bulkhead Snap-On DC-4GHz Small Round/square flange, panel feed-through
MCX Bulkhead Snap-On DC-6GHz Sub-miniature Threaded flange, panel feed-through
SMA Bulkhead Threaded DC-18GHz Small Hex flange, threaded panel feed-through
BNC Bulkhead Bayonet DC-4GHz Medium Bolted flange, panel feed-through
TNC Bulkhead Threaded DC-11GHz Medium Hex flange, threaded panel feed-through

Snap-on structures allow faster mating and are suited to frequently mated interfaces, while threaded structures provide higher connection reliability for long-term fixed connections in vibration environments. Selection should account for installation space, mating frequency, and operating frequency band.

Frequently Asked Questions

What is the operating frequency range of SMB Bulkhead Mount RF Coaxial Connectors?

The standard structure covers DC to 4GHz. The upper limit varies by model depending on contact structure, insulation material, and manufacturing tolerance, and should be confirmed against the specific product datasheet.

What is the difference between standard detent and limited detent types?

Standard detent types provide moderate mating force suited to routine mating frequency, while limited detent types add retention structure to increase mating force and reduce the risk of disconnection, suited to vibration environments or heavier cable loads.

Can bulkhead mount connectors be sealed against water?

Yes. Certain models incorporate an O-ring at the flange contact surface, which, combined with correct panel installation, improves water and dust sealing for outdoor or humid equipment interfaces.

How should flange size be matched to panel thickness during selection?

Flange length and thread depth should be selected according to actual panel thickness, and the mounting hole dimensions should match the flange outer diameter and fixing hole spacing to avoid looseness or stress concentration after installation.

Is non-standard customization available?

Customization is available for flange configuration, contact material, plating type, and sealing grade, with specific parameters confirmed based on the technical requirements of the application.