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

RF Coaxial Connectors & Components Manufacturer

  • JC3.650.067
    MCX-JWB2
    Product parameters > >
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    Major Technical Characteristics
    Temperature Range -55 ～ +155°C (PE Cable -40 ～ +85°C)
    Impedance 50Ω,75Ω
    Frequency Range DC ～ 6GHz
    Working Voltage 250V (50Ω) / 170V (75Ω) at sea level
    Withstanding Voltage 750V (50Ω) / 250V (75Ω) at sea level
    Contact Resistance Center Contact ≤5mΩ
    Outer Contact ≤2.5mΩ
    Insulation Resistance ≥1000MΩ
    Center conductor retention force ≥0.28N
    Engagement force ≤20N
    Disengagement force ≥8N
    Insertion loss 0.18dB/1GHz
    Voltage Standing Wave Ratio Straight ≤1.20/1GHz
    Right angle ≤1.45/1GHz
    Durability ≥500(cycles)

    Material & Plating
    Body Brass Gold plated
    Pin contact Tin bronze Gold plated
    Socket contact Beryllium-copper Gold plated
    Resilient contact Beryllium-copper Gold plated
    Insulator PTFE ——
    Crimp ferrule Copper alloy Nickel/Gold plated
    O-ring sealing 6146 Silicone rubber ——

    Applicable Standard
    CECC 22220
    IEC 61169-36

    JC3.650.067
  • JC3.650.068 MCX-JWB3
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    JC3.650.068 MCX-JWB3
  • JC3.650.069 MCX-JB2
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    JC3.650.069 MCX-JB2
  • JC3.650.1844 MCX-JB2-3
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    JC3.650.1844 MCX-JB2-3
  • JC3.650.1854 MCX-JWB2-5
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    JC3.650.1854 MCX-JWB2-5
  • JC3.650.622 MCX-C-75J1.5
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    JC3.650.622 MCX-C-75J1.5
  • JC3.650.1301 MCX-C-75JW1.5
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    JC3.650.1301 MCX-C-75JW1.5
  • JC3.650.1307 MCX-C-75J1.5-1
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    JC3.650.1307 MCX-C-75J1.5-1
  • JC3.650.059 MCX-C-JW1.5
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    JC3.650.059 MCX-C-JW1.5
About
Yangzhou Jingcheng Electronics Co., Ltd.
Yangzhou Jingcheng Electronics Co., Ltd.

Yangzhou Jingcheng Electronics Co., Ltd., a premier China RF Coaxial Connectors & Components Manufacturer and RF Coaxial Connectors & Components 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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News & Updates
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Products Industry knowledge

Classification Overview

RF Coaxial Connectors & Components form a critical category of interconnect devices engineered to transmit radio frequency signals between coaxial cables, printed circuit boards, antennas, and RF modules with minimal signal degradation. The core function shared across all products in this category is to maintain a consistent characteristic impedance—typically 50 Ω or 75 Ω—along the signal path, thereby preserving signal integrity and minimizing reflections at the interconnection point. These components are designed with a concentric conductor geometry in which an inner conductor is surrounded by a tubular outer conductor separated by a dielectric insulator, a structure that inherently confines the electromagnetic field and provides shielding against external interference.

The defining performance parameters common to RF Coaxial Connectors & Components include frequency range capability (spanning from DC to 50 GHz across different series), voltage standing wave ratio (VSWR) or equivalently return loss, insertion loss, impedance uniformity, and intermodulation performance for high-power or multi-carrier systems. The mechanical attributes—coupling mechanism, durability rated in mating cycles, materials of body and center contact (commonly brass with gold, silver, or nickel plating, and beryllium copper or phosphor bronze for spring contacts), and environmental sealing—are equally critical to reliable long-term operation. Yangzhou Jingcheng Electronics Co., Ltd. supplies a comprehensive portfolio within this category, encompassing precision connector series and associated components manufactured with advanced CNC machining and high-precision testing equipment to meet the demands of modern RF systems.

A key advantage of this product category is the breadth of standardized interface designs available, each optimized for specific frequency ranges, power levels, and mechanical constraints. From subminiature push-on types for dense board-level layouts to robust weather-resistant connectors for outdoor infrastructure, RF Coaxial Connectors & Components provide the essential building blocks for constructing reliable RF signal chains in telecommunications, test and measurement, aerospace and defense, automotive radar, medical imaging, and industrial IoT systems.

Common Connector Types & Characteristics

The following table summarizes the most widely used RF coaxial connector series, their defining electrical and mechanical characteristics, and their typical deployment scenarios. This comparison aids in understanding the differentiation among interface standards within the broader classification.

Connector Series Impedance Max Frequency Coupling Type Key Characteristics Typical Applications
SMA 50 Ω 18 GHz (standard)
26.5 GHz (precision)		 Threaded Compact, durable, stainless steel option available, wide industry adoption Cellular base stations, Wi-Fi equipment, test instrumentation, GPS modules
3.5 mm / 2.92 mm 50 Ω 34 GHz / 40 GHz Threaded Air-dielectric interface, high-precision, SMA-compatible (3.5 mm), low VSWR at mmWave Millimeter-wave testing, 5G backhaul, satellite communication, radar systems
2.4 mm / 1.85 mm 50 Ω 50 GHz / 67 GHz Threaded Highest precision in this category, ruggedized air-dielectric design, laboratory-grade Network analyzers, high-frequency R&D, aerospace telemetry, 5G mmWave
SMP 50 Ω 40 GHz Push-on / Snap-on Blind-mate capable, axial/radial float tolerance, high packaging density Phased array antennas, military avionics, dense board-to-board RF links
MCX / MMCX 50 Ω / 75 Ω 6 GHz Snap-on Ultra-miniature footprint, quick connect/disconnect, lightweight, 360° rotation (MMCX) GPS receivers, handheld radios, IoT devices, automotive telematics, PCB connectors
BNC 50 Ω / 75 Ω 4 GHz (standard)
10 GHz (precision)		 Bayonet Quick-lock bayonet coupling, robust, widely recognized, low cost Broadcast video, test equipment, medical monitors, legacy RF systems
TNC 50 Ω 11 GHz Threaded Vibration-resistant threaded version of BNC, weatherproof options available Mobile communications, antenna feeder lines, outdoor wireless infrastructure
N-Type 50 Ω / 75 Ω 11 GHz (standard)
18 GHz (precision)		 Threaded High power handling, weather-resistant, durable threaded interface, large diameter Base station antennas, broadcast transmitters, high-power RF systems, outdoor installations
DIN 7/16 50 Ω 7.5 GHz Threaded Very high power capacity, low PIM, robust mechanical design, large contact area Cellular tower jumpers, high-power combiners, broadcast transmission lines
UHF Non-constant 300 MHz Threaded Legacy design, large form factor, high voltage tolerance, economical Amateur radio, low-frequency RF, public address systems, legacy equipment

Note: Frequency ratings represent typical maximum values for precision-grade connectors. Actual performance depends on connector design, materials, plating quality, and cable assembly workmanship. Yangzhou Jingcheng Electronics Co., Ltd. produces these connector series with rigorous quality control to achieve specified electrical performance across the rated frequency range.

Application Scenarios

RF coaxial connectors and components are deployed across a diverse range of industries. The selection of an appropriate connector series is driven by the specific electrical, mechanical, and environmental requirements of each application domain.

Telecommunications & Wireless Infrastructure

Base station feeder connections (DIN 7/16, N-Type), small cell backhaul (SMA, 2.92 mm), distributed antenna systems, and 5G massive MIMO arrays (SMP, SMZ). Low PIM performance is critical for multi-carrier cellular systems.

Test & Measurement Instrumentation

Vector network analyzers, spectrum analyzers, and signal generators rely on precision-grade connectors (2.4 mm, 1.85 mm, 2.92 mm) with calibrated electrical characteristics for accurate measurements up to 50 GHz and beyond.

Aerospace & Defense

Radar systems, satellite communication terminals, electronic warfare equipment, and avionics. Connectors must meet stringent requirements for vibration resistance, wide temperature range, and high reliability (SMP, SMA, TNC, 2.92 mm).

Automotive & IoT

GPS antennas (MCX, SSMB), V2X communication modules, automotive radar (SMA), telematics control units, and industrial IoT sensor nodes requiring compact, lightweight interconnects with reliable snap-on engagement.

Broadcast & Medical

Broadcast video transmission (BNC 75 Ω), MRI coil connections, patient monitoring equipment, and diagnostic imaging systems where signal fidelity and connector reliability are paramount.

Selection Guide & Key Considerations

Choosing the correct RF coaxial connector or component requires systematic evaluation of the following parameters to ensure optimal electrical performance and mechanical compatibility within the target system.

Selection Parameter Guidance
Frequency Range The connector's maximum rated frequency must exceed the highest operating frequency of the system. For harmonics or wideband signals, include adequate margin. Precision connectors (2.92 mm, 2.4 mm, 1.85 mm) are specified for millimeter-wave bands.
Characteristic Impedance Match the system impedance—50 Ω for most wireless, cellular, and test applications; 75 Ω for broadcast video and CATV distribution. Mismatched impedance causes reflections and increased VSWR.
Power Handling High-power transmitters require connectors with larger contact diameters and robust dielectric materials (DIN 7/16, N-Type). Exceeding power ratings leads to overheating, arcing, and premature failure.
Coupling Mechanism Threaded (SMA, N, TNC, DIN) for vibration resistance and consistent torque; bayonet (BNC) for quick connect/disconnect; snap-on/push-on (MCX, MMCX, SMP) for high-density and blind-mate scenarios.
Environmental Sealing Outdoor installations require IP-rated connectors with gaskets and weatherproof boots. Indoor and laboratory environments may accept non-sealed interfaces.
Mating Cycles Laboratory-grade connectors are rated for thousands of mating cycles with consistent electrical performance. Field-deployed connectors may prioritize robustness over high cycle count.
PIM Requirements For cellular infrastructure, select low-PIM connectors (DIN 7/16, specific N-Type variants) with appropriate plating and contact design to minimize passive intermodulation distortion.

Quick Selection Decision Flow

  1. Determine frequency: < 6 GHz → BNC, MCX, MMCX, UHF; 6–18 GHz → SMA, N, TNC; > 18 GHz → 2.92 mm, 2.4 mm, 1.85 mm, SMP.
  2. Confirm impedance: 50 Ω for most RF; 75 Ω for video/CATV.
  3. Assess power level: > 100 W → DIN 7/16 or N-Type preferred.
  4. Evaluate space constraints: Tight PCB layouts → SMP, MMCX, SSMB; standard panel → SMA, BNC, TNC.
  5. Check environmental exposure: Outdoor → threaded + IP-rated seal; indoor lab → any appropriate series.
  6. Consider mating frequency: Frequent connect/disconnect → bayonet or push-on; permanent/semi-permanent → threaded.

Associated RF Components

Beyond connectors, the RF Coaxial Connectors & Components classification encompasses a range of passive devices that perform essential functions within RF signal chains. These components are engineered with the same precision and impedance-controlled design principles as the connectors themselves.

Attenuators

Fixed and variable attenuators reduce signal amplitude by a specified dB value while maintaining impedance matching. Used for level control, isolation improvement, and receiver protection in test setups and live systems.

Terminal Loads

Precision 50 Ω or 75 Ω terminations absorb RF energy to prevent reflections at open ports. Essential for terminating unused ports on couplers, dividers, and antenna switching matrices.

Lightning Arresters

Gas-discharge or quarter-wave stub protectors that shunt high-voltage transients to ground, safeguarding sensitive RF equipment in outdoor antenna installations from lightning-induced surges.

Adapters & Reverse Polarity

In-series and between-series adapters enable interconnection of dissimilar connector types. Reverse polarity variants provide gender-reversed center contacts for compliance with specific regulatory standards (FCC Part 15).

Cable Assemblies

Factory-terminated coaxial cable assemblies with guaranteed VSWR and insertion loss performance. Available in flexible, semi-rigid, and conformable cable types for DC to 50 GHz applications.

Frequently Asked Questions

Q: What is the difference between 50 Ω and 75 Ω RF connectors, and can they be interchanged?

The impedance value refers to the characteristic impedance of the connector's transmission line structure, determined by the ratio of inner conductor diameter to outer conductor diameter and the dielectric constant. 50 Ω is the standard for most wireless, cellular, and test equipment, offering an optimal balance between power handling and low attenuation. 75 Ω is predominantly used in video broadcast, CATV, and satellite TV distribution where minimum signal loss over long cable runs is prioritized. The two impedance standards are not directly interchangeable—mating a 50 Ω connector with a 75 Ω counterpart creates an impedance discontinuity that increases VSWR and signal reflections, degrading system performance. Some connector series (BNC, N-Type, MCX) are manufactured in both 50 Ω and 75 Ω versions, so verifying the impedance rating before interconnection is essential.

Q: How does frequency rating affect connector selection for high-frequency applications?

The maximum frequency rating of a connector is determined by its physical dimensions and the dielectric material used. As frequency increases, the wavelength becomes shorter, and the connector's internal geometry begins to support higher-order propagation modes that distort the intended TEM mode, causing resonances and increased insertion loss. For applications above 18 GHz, precision connectors such as 2.92 mm (40 GHz), 2.4 mm (50 GHz), and 1.85 mm (67 GHz) are specified because their smaller cross-sectional dimensions push the cutoff frequency of unwanted modes well beyond the operating range. SMA connectors, while rated to 18 GHz in standard form, can be manufactured in precision grades reaching 26.5 GHz. Selecting a connector with insufficient frequency headroom results in degraded VSWR and unpredictable performance at the upper end of the operating band.

Q: What are the advantages of push-on connectors compared to threaded types?

Push-on (snap-on) connectors such as SMP, MCX, MMCX, and SSMB offer several operational advantages: faster mating and unmating without tools, reduced installation time in high-volume manufacturing, the ability to accommodate axial and radial misalignment (particularly SMP with its floating bullet design), and suitability for blind-mate applications where visual access to the connector interface is limited. The trade-off is that push-on connectors generally provide lower retention force than threaded interfaces and may be more susceptible to accidental disconnection under severe vibration unless additional retention features are incorporated. Threaded connectors (SMA, N-Type, TNC, DIN) remain the preferred choice for high-vibration environments and applications where connection integrity is critical.

Q: Why is PIM (Passive Intermodulation) important in cellular infrastructure connectors?

Passive intermodulation occurs when two or more transmitted carriers mix at nonlinear junctions within passive components—including connectors, cables, and adapters—generating spurious signals at sum and difference frequencies that can fall within the receiver band. In cellular base stations, even low-level PIM products can desensitize receivers and reduce uplink capacity. Connectors designed for low-PIM performance (such as DIN 7/16 and specially plated N-Type variants) use materials with minimal ferromagnetic content, high-contact-pressure designs, and consistent plating thickness to minimize nonlinear effects. PIM specifications, typically measured in dBc at two 20W tones, are a critical selection criterion for connectors deployed in multi-carrier cellular and distributed antenna systems.

Q: What manufacturing and testing capabilities support the quality of RF coaxial connectors?

The production of high-performance RF coaxial connectors requires precision CNC machining with tight tolerances (often within microns) for center contact concentricity and interface dimensions, along with controlled plating processes for conductivity and corrosion resistance. Yangzhou Jingcheng Electronics Co., Ltd. employs advanced manufacturing equipment and high-precision testing instruments—including vector network analyzers capable of characterizing VSWR and insertion loss across the full rated frequency spectrum—to verify that each connector series meets its specified electrical and mechanical parameters. In-house testing capabilities spanning DC to 50 GHz ensure that products including 2.92 mm, 2.4 mm, 1.85 mm, SMP, SMA, BNC, TNC, N, DIN, MCX, MMCX, and associated cable assemblies, attenuators, terminations, and lightning arresters are delivered with verified performance data.

RF Coaxial Connectors & Components represent a foundational interconnect technology for radio frequency systems, with performance directly influencing signal integrity, system reliability, and measurement accuracy. The selection of an appropriate connector series—guided by frequency requirements, impedance matching, power handling, environmental conditions, and mechanical constraints—is an engineering decision that benefits from a thorough understanding of the characteristics documented above. The comprehensive portfolio available from Yangzhou Jingcheng Electronics Co., Ltd., encompassing precision connector series from DC to 50 GHz along with attenuators, terminations, lightning arresters, adapters, and cable assemblies, provides solutions for applications ranging from high-volume wireless infrastructure to precision laboratory instrumentation.