Amid the rapid evolution of 5G communications and high-density antenna arrays, base station equipment is quickly becoming more compact and lightweight. As a dedicated manufacturer specializing in RF coaxial connectors, we fully understand the limitations of traditional connectors in space-constrained environments. To address this, we have developed the 4.3-10 Male Plug (Type JB3)-a solution that offers a perfect balance of space efficiency and high performance, specifically tailored for modern communication systems.
Product Introduction
The 4.3-10 Male Plug, Type JB3 is a Low Passive Intermodulation (Low PIM) RF coaxial connector specifically designed for modern mobile communication base stations. "Male Plug" designates the male (pin) structure, while "Type JB3" precisely corresponds to its optimized termination method for 1/2-inch super-flexible or corrugated coaxial cables. Compared to traditional 7/16 DIN connectors, it reduces volume by approximately 40% and weight by 60%. While significantly freeing up space at the antenna end, it perfectly supports hand-screw quick mating. Backed by over 30 years of precision manufacturing heritage, this connector delivers industry-leading Low PIM performance and outstanding waterproof/dustproof capabilities while maintaining an ultra-compact footprint.
Working Principle
This connector operates based on the 50Ω coaxial transmission line mechanism. Electrically, the high-precision internal center pin achieves precise surface contact with the mating female receptacle, ensuring highly efficient and low-loss RF signal transmission. The outer metal shells mate tightly via an innovative locking mechanism (supporting threaded, hand-screw, or push-pull quick-lock options) to form a complete outer conductor circuit. This design provides 360° comprehensive electromagnetic shielding, effectively isolating external Electromagnetic Interference (EMI) and preventing signal leakage. Mechanically, the separation of the electrical and mechanical planes ensures that while achieving Low PIM performance, the connector no longer relies excessively on locking torque, significantly reducing installation difficulty in high-altitude or complex environments.
Product Structure
The 4.3-10 Male Plug, Type JB3 connector mainly consists of the following core components:
Outer Conductor (Body): Manufactured from high-quality brass or stainless steel with a tri-metal or white bronze plating finish, providing excellent corrosion resistance, mechanical support, and electromagnetic shielding.
Inner Conductor (Pin): Made of high-conductivity copper and plated with hard gold to minimize contact resistance, enhance high-frequency transmission efficiency, and improve oxidation resistance.
Dielectric Insulator: Positioned between the inner and outer conductors, utilizing premium Polytetrafluoroethylene (PTFE) to support the inner conductor, maintain constant characteristic impedance, and provide electrical insulation.
Sealing & Locking Mechanism: The rear is equipped with a polymer claw ring and a silicone rubber O-ring seal. Combined with a precision locking nut, this ensures an IP68 waterproof and dustproof rating in both mated and unmated states.
Technical Parameters
Below are the standard electrical and mechanical performance specifications for the 4.3-10 Male Plug, Type JB3 connector:
Characteristic Impedance: 50Ω
Frequency Range: DC ~ 6 GHz (Custom versions up to 12 GHz available)
Passive Intermodulation (PIM): ≤ -166 dBc @ 2x43 dBm
Voltage Standing Wave Ratio (VSWR): ≤ 1.15 @ 3 GHz
Contact Resistance: Inner Conductor ≤ 1.5 mΩ, Outer Conductor ≤ 1.0 mΩ
Insulation Resistance: ≥ 5000 MΩ
Dielectric Withstanding Voltage: ≥ 750 V rms (at sea level)
Ingress Protection Rating: IP68 (Mated state, 2 meters water depth for 1 hour)
Mechanical Life: ≥ 100 mating cycles
Operating Temperature Range: -55℃ ~ +90℃
Environmental Compliance: Fully compliant with RoHS / REACH standards
Application Areas
With its compact size and outstanding electrical performance, the 4.3-10 Male Plug, Type JB3 connector is widely used in the following fields:
5G/4G Macro & Micro Base Stations: For jumper cable connections between RRUs (Remote Radio Units) and antennas, perfectly adapting to the spatial constraints of high-density antenna arrays (e.g., Massive MIMO).
Distributed Antenna Systems (DAS): Applicable for signal coverage equipment in complex indoor environments such as shopping malls, subways, and airports.
Microwave & Satellite Communications: For stable high-frequency signal transmission links.
Test & Measurement Equipment: Serving as dedicated interfaces for Low PIM test loads, calibration kits, and RF analyzers.
Usage Precautions
To ensure the optimal performance of the 4.3-10 Male Plug, Type JB3 connector, please observe the following guidelines during installation and operation:
Proper Operation: For hand-screw or push-pull versions, no tools are required; simply rotate or push/pull to complete the connection. For threaded versions, use a dedicated torque wrench and avoid over-tightening.
Maintain Clean Interfaces: Always inspect and clean the pin and insulator faces before mating. Even microscopic dust or metal shavings are the primary culprits behind elevated PIM values and signal degradation.
Cable Termination Process: Strictly follow our provided stripping dimension drawings to ensure a secure and solid crimp or solder joint, preventing cable detachment and impedance mismatch.
Waterproofing Measures: Although the product itself features an IP68 rating, for long-term outdoor exposure in harsh environments, we recommend applying additional waterproof tape or heat-shrink tubing at the connection point for dual protection.
Closing Statement
Zhenjiang Tongda Electronics Co., Ltd. has always regarded technological innovation and unwavering quality as the lifeline of our business. As a source factory with over 30 years of history, we not only provide 4.3-10 series connectors that comply with IEC international standards but also rely on our provincial-level engineering technology research center to solve various non-standard customization and special cable adaptation challenges for you at any time. If you are looking for a partner who understands technology, prioritizes quality, and ensures stable delivery, please visit our official website to explore our complete product catalog. We sincerely invite you to leave us a message or contact us via email/phone. Our technical team will provide you with professional selection advice and highly competitive quotation solutions at the earliest opportunity!
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