HD-BNC Terminators
High-density bayonet-style terminations delivering compact, true 50 Ω/75 Ω performance for modern broadcast and RF networks
Overview
At Amphenol RF, our HD-BNC Terminator product line offers engineers and system integrators a refined termination solution built around the high-density HD-BNC™ interface. Designed to match the footprint and mechanical form-factor of our HD-BNC connector series—which supports both 50 Ω and 75 Ω impedance and features a push-and-turn positive-lock interface—these terminators facilitate seamless system adoption and simplified inventory management.
Whether deployed in ultra-high-definition broadcast systems, high-density instrumentation panels or RF signal distribution networks, HD-BNC Terminators from Amphenol RF enable proper impedance matching, port isolation and minimal signal reflection—all within a significantly reduced footprint compared to legacy BNC terminations.
Features and Benefits
- Compact HD-BNC interface delivers up to four-times the connector density of standard BNC while maintaining full electrical performance.
- Available in 50 Ω and 75 Ω versions, enabling termination options for RF systems (50 Ω) and broadcast/video networks (75 Ω).
- Built-in positive-lock push-and-turn coupling ensures reliable mechanical engagement and repeatable electrical performance in dense panel or rack environments.
- Seamless compatibility with existing HD-BNC cable assemblies and broadcast infrastructure, reducing installation time and risk of mismatch.
- Engineered to support high-performance video (including 12G-SDI / UHD) systems via the 75 Ω HD-BNC variants.
Key Technical Details
- Impedance: Standard 50 Ω and dedicated 75 Ω versions align with system requirements and cable infrastructure.
- Frequency range: The HD-BNC connector family supports up to DC–6 GHz (for both 50 Ω and 75 Ω general designs) and up to 12 GHz for 12G-SDI 75 Ω variants. Terminator performance will depend on cable, configuration and assembly.
- Mating cycles: Typical HD-BNC mechanical specification alike is rated for a minimum of 500 matings. Terminator mating life may vary accordingly.
- Temperature range: The HD-BNC series supports approximately –65 °C to +165 °C operational temperature range. Actual terminator part ratings depend on termination style and configuration.
- Special features: High-density connector footprint, positive-lock mechanism, true 50 Ω/75 Ω performance, support for UHD video. Note that standard HD-BNC terminators from Amphenol RF are not hermetic sealed and, unless explicitly specified, do not carry IP67 environmental rating.
Applications
- Broadcast production environments and patch-panels requiring high-density terminations, particularly for 75 Ω HD-BNC systems carrying UHD/12G-SDI signals.
- Instrumentation, test & measurement racks where high-channel-count terminations are needed in constrained space and reliability is paramount.
- RF distribution and signal-routing systems where compact termination of unused ports is required to maintain impedance matching and minimize signal reflections.
- Board-mounted or cable-mounted assemblies using HD-BNC connectors where inventory standardization and form-factor efficiency are desired.
- Professional AV systems, studio infrastructure and media-technology deployments where HD-BNC serves as the mechanical/electrical standard.
Explore the full range of HD-BNC Terminators in our catalog. If you require a custom termination power rating, special environmental sealing, alternate impedance, or non-standard configuration, please contact our engineering team to discuss a tailored solution.
Related Resources
Design security into your system with waterproof HD-BNC interface
Amphenol RF is pleased to offer a wide selection of waterproof IP67-rated HD‐BNC connectors. These connectors are designed specifically for use in applications where the system may be compromised through exposure to the elements.
New HD-BNC connectivity options for ultra-flexible low-loss cable
Amphenol RF is pleased to announce the expansion of the HD-BNC product series with two new cable connectors. These connectors are specifically designed to terminate to the Times Microwave LMR-195-UF cable type which is engineered to be an ultra-flexible low loss cable option.
New 12G-SDI broadcast products to support plenum cable
Amphenol RF is pleased to introduce an expansion of their 12G-SDI broadcast products.
HD-BNC dual-port PCB connectors increase connectivity density
Amphenol RF expands its HD-BNC offerings with dual port PCB jacks optimized for 12G SDI broadcast performance.
Make panel mount connections direct to broadcast components
Amphenol RF is pleased to announce the expansion of its industry-leading 12G product portfolio to include pre-configured HD-BNC cable assemblies featuring panel mount jack connectors on the popular Belden 4855R cable type.
Amphenol RF HD-BNC Product Series Solutions Guide
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.
50 Ohm HD-BNC Cable Assemblies
Amphenol RF's 50-ohm HD-BNC cable assemblies are designed for high-density applications, providing a compact and lightweight solution with a push-and-turn interface for enhanced performance. These assemblies, compatible with industry-standard RG-316 cable, support a frequency range up to 6 GHz and are ideal for telecommunications, instrumentation, radios, military, and industrial applications.
High Density Broadcast Solutions
The "High-Density Broadcast Solutions" document from Amphenol RF highlights their range of RF interconnects designed for broadcast connectivity, including BNC, Mini-BNC, 1.0/2.3 DIN, and HD-BNC connectors. These connectors offer various impedances and frequency ranges, with HD-BNC providing the highest density at an 8mm pitch and supporting data rates up to 12 Gb/s. Applications include high-definition transmission, video routing, mobile broadcast equipment, and digital signage, ensuring reliable performance and reduced equipment size without compromising signal integrity.
White Paper: High Density Interconnect Standards
The "High Density Interconnect Standards for Next Generation Broadcast Networks" paper discusses the HD-BNC connector, designed to meet modern broadcast systems' demands for higher density and performance. HD-BNC offers significant density improvements over traditional BNC connectors, with a 75 ohm interface optimized for high bandwidth up to 6 GHz. It maintains robustness and user-friendly bayonet-style mating, providing better mechanical and RF performance than other high-density alternatives like 1.0/2.3 and Mini-BNC. The HD-BNC's design ensures compatibility with industry-standard tools and cables, making it a superior choice for next-generation broadcast applications.
12G SDI Broadcast Solutions
Amphenol RF offers 12G SDI broadcast solutions designed for Ultra High Definition (4K) video, utilizing BNC, HD-BNC, and MCX connectors optimized for 12 Gbps data transfer. These connectors provide reliable, high-quality signal transmission on a single channel, supporting various applications including mobile broadcast, HD cameras, and video routers.
12G Isolated BNC and HD-BNC Connector Series
Amphenol RF's 12G Isolated BNC and HD-BNC connectors are designed for high-performance broadcast applications, offering 12 Gbps performance per SMPTE standard with additional signal isolation. These 75 Ohm connectors are available in straight and right-angle configurations, providing design flexibility for densely packed applications, and feature a unique dielectric sleeve for isolation, preventing body to panel grounding. They are ideal for mobile broadcast, HD cameras, digital signage, and other video-related applications.
IP67 Sealed HD-BNC Connector Series
The Amphenol RF IP67 HD-BNC Product Series features waterproof HD-BNC connectors designed for high-density applications that require protection against environmental elements. These connectors are 75% smaller than traditional BNC connectors, offer a bayonet-style positive lock mechanism, and are available in both 50 and 75 ohm configurations, making them ideal for high-definition cameras, military radios, broadcast studios, and remote industrial equipment.
RF Interconnect for 12G-SDI Broadcast Applications -- Amphenol RF and Mouser Electronics
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.
More information about Amphenol RF Adapters & Cable Assemblies for Broadcast: https://bit.ly/3iYYECS
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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