BNC Connectors
Trusted bayonet RF connectors for test, broadcast and general-purpose applications
Overview
Amphenol RF’s BNC connector series provides a versatile and reliable bayonet-coupling interface that meets the needs of test labs, broadcast systems, and general-purpose RF and video setups. Designed for both 50 Ω and 75 Ω impedance environments, these connectors ensure quick, secure connections with consistent impedance matching and low-reflection performance—even under frequent usage.
Engineered for durability and signal integrity, our BNC connectors support high-frequency video signals up to 12 GHz when paired with Amphenol RF’s 12G-capable broadcast cable assemblies. Whether used in instrumentation, live production, or everyday equipment, BNC connectors offer an economical yet professional-grade solution for clean signal transfer.
Features and Benefits
- Easy bayonet coupling enables fast, tool-less mating and secure retention
- Dual impedance support offers 50 Ω for general RF use and 75 Ω for high-bandwidth video systems
- High-frequency capability with broadcast-grade assemblies rated to 12 GHz
- Lab-grade durability—precision contacts withstand frequent mating cycles
- Versatile form factors include cable-mount, panel-mount, right-angle, and bulkhead versions
Key Technical Details
- Impedance types: 50 Ω and 75 Ω variants available based on application
- Frequency rating: Standard RF to ~4 GHz; video-grade setups support up to 12 GHz (cable dependent)
- Coupling mechanism: Bayonet style for fast and reliable connections
- Contact integrity: Gold-plated contacts maintain consistent return and insertion loss
- Mounting options: Cable, panel, right-angle, and bulkhead versions to suit various installations
Applications
- Test instrumentation – oscilloscopes, signal generators, and analyzers
- Broadcast and production – high-bandwidth 12G SDI video systems
- Communications testbeds – RF labs and educational facilities
- Control and monitoring systems – secure signal pathways in industrial environments
- Legacy infrastructure – cost-effective, durable connectors for retrofit and maintenance
Browse our full BNC connector lineup to select the ideal impedance, mounting style, and frequency capability. For custom assemblies, specific cable pairings, or guidance on broadcast-grade requirements, contact our engineering team to explore tailored solutions.
Specifications
BNC Connectors
50 Ohm
Electrical
| Impedance | 50 Ohm |
| Frequency Range | DC - 4 GHz (DC -12 GHz on Extended Range Designs) |
| Voltage Rating | 500 Volts RMS Max Continuous |
| Dielectric Withstanding Voltage | 1500 VRMS Max |
| VSWR (Return Loss) | |
|
DC - 4 GHz
|
1.3 (-18 dB) Max |
| Insulation Resistance | 5000 MΩ Min |
| Center Contact Resistance | 1.5 mΩ Min |
| Outer Contact Resistance | 0.2 mΩ Min |
| RF Leakage | 55 dB Max @ 3 GHz |
| Insertion Loss | 0.2 dB Max @ 3 GHz |
| Power Handling | 316 W Max @ 1 GHz @ 25 ºC |
Environmental
| Temperature Range | −65°C to +165°C |
| Thermal Shock | MIL-STD-202, Method 107 (Test Condition G), except high temp test @ +200⁰C |
| Corrosion | MIL-STD-202, Method 101 (Test Condition B) - 5% Salt Solution |
| Vibration | MIL-STD-202, Method 204 (Test Condition D) |
| Mechanical Shock | MIL-STD-202, Method 213 (Test Condition G) - No Discontinuity Permitted |
| Moisture Resistance | MIL-STD-202, Method 106 |
| Altitude | MIL-STD-202 Method 105 (Test Condition C) |
Mechanical
| Mating Cycles | 500 Min |
| Coupling Mechanism | Bayonet |
| Interface Specification | MIL-STD-348 |
75 Ohm
Electrical
| Impedance | 75 Ohm |
| Frequency Range | DC- 4 GHz (DC - 12 GHz on Extended Range Designs) |
| Voltage Rating | 500 Volts RMS Max Continuous |
| Dielectric Withstanding Voltage | 1500 VRMS Max |
| VSWR (Return Loss) | |
|
DC - 4 GHz
|
1.5 (-14 dB) Max |
|
12G Products: DC - 6 GHz
|
1.22 (-20 dB) Max |
|
12G Products: 6 - 12 GHz
|
1.43 (-15 dB) Max |
| Insulation Resistance | 5000 MΩ Min |
| Center Contact Resistance | 1.5 mΩ Min |
| Outer Contact Resistance | 0.2 mΩ Min |
| RF Leakage | 55 dB Max @ 3 GHz |
| Insertion Loss | 0.2 dB Max @ 3 GHz |
| Power Handling | 316 W Max @ 1 GHz @ 25ºC |
Environmental
| Temperature Range | −65°C to +165°C
|
| Thermal Shock | MIL-STD-202, Method 107 (Test Condition G), except high temp test @ +200⁰C
|
| Corrosion | MIL-STD-202, Method 101 ( Test Condition B) - 5% Salt Solution
|
| Vibration
|
MIL-STD-202, Method 204 (Test Condition D) |
| Mechanical Shock
|
MIL-STD-202, Method 213 (Test Condition G) - No Discontinuity Permitted
|
| Moisture Resistance
|
MIL-STD-202, Method 106
|
| Altitude
|
MIL-STD-202, Method 105 (Test Condition C)
|
Mechanical
| Mating Cycles
|
500 Min
|
| Coupling Mechanism | Bayonet
|
| Interface Specification
|
MIL-STD-348
|
Note: These characteristics are typical and may not apply to all connectors.
Connector configurations may affect performance.
Interface Dimensions
Jack
Plug
Related Resources
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The Amphenol RF HD-BNC Product Series Guide outlines a compact RF connector interface designed for high-density signal routing. It focuses on connector and cable configurations that maintain standard BNC performance in a reduced footprint, detailing electrical and mechanical characteristics, interface options, and use in applications such as broadcast video, test equipment, and other high-frequency systems.
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High Density Broadcast Solutions
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IP67 Sealed HD-BNC Connector Series
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BNC UltraFlex Cable Assemblies
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Ruggedized BNC & TNC Cable Assemblies
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September 23, 2020 - Today’s 4K and emerging 8K video standards require an enormous amount of bandwidth. And, with all that bandwidth, there are new demands on our interconnects. In this episode of Chalk Talk, Amelia Dalton chats with Mike Comer and Ron Orban of Amphenol RF about the evolution of broadcast technology and the latest interconnect solutions that are required to meet these new demands.
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View full article: https://www.allaboutcircuits.com/new-industry-products/amphenol-rf-bnc-to-mcx-cable-assemblies-new-product-brief
View product at Mouser.com: https://bit.ly/2Vp4mmU
Amphenol RF BNC to MCX Cable Assemblies are designed to deliver 4K video and other high bandwidth data on a compact interconnect without compromising signal quality. The cable assemblies offer a 75 ohm impedance and use Belden 4855R cable, ensuring quality transmission from the source to the receiver. For more information, as well as all the latest All About Circuits projects and articles, visit the official website at http://www.allaboutcircuits.com/
Check out Mouser's profile on All About Circuits and see more
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BNC vs. HD-BNC: What's the Difference?
Discover the key differences between the classic BNC connector and the high-performance HD-BNC connector in this quick comparison! From size and signal performance to applications in broadcasting, telecommunications, and beyond, find out which connector is best for your needs.
Smaller Size, Bigger Performance
High-Density Connections
Perfect for Modern High-Frequency Systems
Watch now to see why HD-BNC might be your next go-to solution!
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