The BNC 500CG is a miniature bayonet RF coaxial connector engineered for quick-connect/disconnect applications in radio, video, test and measurement, and broadcast systems. A quarter-turn coupling nut with two studs provides secure, reliable mating suitable for environments requiring frequent connections. Available in both 50 ohm and 75 ohm impedance versions, the connector delivers stable performance across DC to 4 GHz (50 ohm) and DC to 1 GHz (75 ohm), with capability to function up to 11 GHz in static applications.
## Technical Specifications
• **Impedance:** 50 ohm or 75 ohm
• **Frequency Range:** DC to 4 GHz (50 ohm); DC to 1 GHz (75 ohm); functional to 11 GHz in static applications
• **Voltage Rating:** 500 V RMS
• **Dielectric Withstanding Voltage:** 1,500 V RMS
• **Insulation Resistance:** 5,000 megohms minimum
• **Center Contact Resistance:** 1.5 milliohms maximum
• **Outer Contact Resistance:** 0.3 to 1.0 milliohms maximum
• **VSWR:** 1.30 maximum up to 4 GHz (50 ohm)
• **RF Insertion Loss:** 0.2 dB minimum at 3 GHz
• **RF Leakage:** −55 dB minimum at 3 GHz
• **Mechanical Durability:** 500 insertions and extractions minimum
• **Shock:** 50 G
• **Vibration:** 20 G (80–2000 Hz)
• **Cable Retention:** 60 lbs minimum pull test
## Key Features
• Bayonet locking mechanism with quarter-turn mating
• Brass connector body with nickel or silver plating
• Beryllium copper or phosphor bronze female contacts
• Silver or gold contact plating options
• Teflon, Delrin, or PTFE insulators
• Silicone or synthetic rubber gaskets
## Typical Applications
• Radio telecommunications and base stations
• Broadcast equipment and studio infrastructure
• Precision video and video switching systems
• Test and measurement instrumentation
• Medical equipment
• Computer networking (75 ohm versions)
• Antenna systems
## Compatibility & Integration
The 50 ohm version suits RF and video applications; the 75 ohm version is optimized for broadcast and computer networking environments. Contact resistance and VSWR performance ensure signal integrity in high-frequency and switching applications.
