HD-AFI Connectors

Board-to-board 75 Ω RF connectors with industry-leading misalignment tolerance and blind‑mate ease

Overview

Amphenol RF’s HD‑AFI connectors are engineered for robust board-to-board RF interconnects in broadband and wireless systems. Featuring generous axial/radial “float” to absorb misalignment and a closed-entry crash-proof mating design, they deliver stable signal integrity and easy assembly—even in high-density multi-port setups. Rated for up to 18 GHz, these connectors bridge performance with practicality.

The HD‑AFI interface supports up to 1.32 mm radial and 2 mm axial misalignment, ensuring reliable engagement across a wide assembly variation. Whether deployed in consumer electronics, medical devices, or broadcast modules, HD‑AFI connectors bring modular convenience without compromising high-speed RF performance.

Features and Benefits
  • High-float blind-mate interface absorbs axial (±2 mm) and radial (±1.32 mm) tolerances for flexible assembly
  • Closed-entry, crash-proof design protects sensitive contacts during mating
  • Extended frequency performance: up to 18 GHz for bandwidth-intensive applications
  • Stable RF performance across full float range with low VSWR and insertion loss
  • Versatile board-to-board configurations: parallel, co-planar, right-angle, customizable stack heights
Key Technical Details
  • Impedance: 75 Ω nominal, matching typical broadband systems
  • Frequency Range: Standard DC–3 GHz; extended designs support up to 12 GHz, and some to 18 GHz
  • Voltage Rating: 170 VRMS continuous; ≥500 VRMS dielectric withstand
  • Coupling Mechanism: Push-on blind-mate design with secure engagement forces (~6 N engage, ~1 N disengage)
  • Environmental & Mechanical: Vibration, shock, thermal cycling, and moisture tests per EIA standards; ≥200 mating cycles 
Applications
  • HD/SD video modules and broadcast equipment
  • Cable modems and set-top boxes in broadband infrastructure
  • Medical diagnostic systems (e.g. ultrasound, endoscopy)
  • Machine vision and industrial inspection systems
  • Automotive infotainment and camera interconnects

Browse our suite of HD‑AFI connector configurations—including bullet adapters, PCB plugs, and jacks—with a full range of blind-mate board-to-board arrangements. For custom board spacing, cable-to-board options, or ruggedized packaging, contact our technical team to develop your tailored solution.

Specifications

HD-AFI Connectors

Electrical

Impedance 75 Ohm
Frequency Range DC - 3 GHz (DC - 12 GHz on Extended Range Designs)
Voltage Rating 170 Volts RMS Continuous
Dielectric Withstanding Voltage 500 Volts RMS Min
VSWR  (Return Loss)
DC - 1 GHz
1.065 (-30 dB) Max
RF Leakage -70 dB Max
Insertion Loss .03 √(f(GHz)) dB Max
Power Handling 10 W @ 2 GHz @ 25ºC

Environmental

Temperature Range −55°C to +155°C
Thermal Shock EIA-364-32, Method A, Condition II, 25 Cycles
Corrosion EIA-364-65, Condition IIA, 336 hours
Vibration EIA-364-28, Condition V, Letter C, for 120 Minutes in each of 3 directions
Mechanical Shock EIA-364-27, Condition A, 3 shocks in each direction (18 total)
Moisture Resistance EIA-364-31, Method III, Condition B

Mechanical

Mating Cycles 200 Min
Coupling Mechanism Push-On
Interface Specification Amphenol RF Proprietary
Engagement Force 6 N Max
Disengagement Force 1 N Max
Mechanical Misalignment
Axial
2 mm
Radial
0.8 mm
Min Board to Board Distance
12 mm

Note: These characteristics are typical and may not apply to all connectors.
Connector configurations may affect performance.

Related Resources

The Amphenol HD-AFI series is a compact, high-density RF board-to-board interconnect solution designed for demanding applications requiring reliable, high-frequency signal transmission up to 12 GHz. With a robust push-on, closed-entry design, multiple stack height options, and industry-leading float tolerance, it’s ideal for telecommunications, networking, IoT, automotive, and test equipment. The series ensures strong signal integrity in tight spaces and offers high durability with up to 200 mating cycles.
Amphenol RF HD-AFI Product Series Solutions Guide
The Amphenol HD-AFI series is a compact, high-density RF board-to-board interconnect solution designed for demanding applications requiring reliable, high-frequency signal transmission up to 12 GHz. With a robust push-on, closed-entry design, multiple stack height options, and industry-leading float tolerance, it’s ideal for telecommunications, networking, IoT, automotive, and test equipment. The series ensures strong signal integrity in tight spaces and offers high durability with up to 200 mating cycles.
Read More
Amphenol RF's board-to-board solutions provide high-performance interconnect options designed for seamless integration in various applications. These solutions ensure reliable connectivity between PCBs, optimizing space and maintaining signal integrity across different frequencies and environments. The product line includes a variety of connector configurations to meet specific design requirements, supporting a wide range of industries from telecommunications to industrial automation.
Board-to-Board Solutions
Amphenol RF's board-to-board solutions provide high-performance interconnect options designed for seamless integration in various applications. These solutions ensure reliable connectivity between PCBs, optimizing space and maintaining signal integrity across different frequencies and environments. The product line includes a variety of connector configurations to meet specific design requirements, supporting a wide range of industries from telecommunications to industrial automation.
Read More
Amphenol RF offers a cutting-edge range of board-to-board RF connectors, designed for seamless high-frequency signal transmission. These connectors are essential for applications in 5G, IoT, automotive, aerospace, and industrial automation, ensuring reliable and high-performance connectivity in compact designs.

🔹 Key Benefits:
✔️ High-frequency performance
✔️ Secure and durable connections
✔️ Compact & versatile for modern PCB designs

Watch this short to see how Amphenol RF’s board-to-board connectors optimize signal integrity across industries!

📌 Learn more: https://www.amphenolrf.com/board-to-board-rf-connectors
🔔 Subscribe for more RF solutions! #AmphenolRF #RFConnectors #PCBDesign #5G #IoT
Amphenol RF Board-to-Board Connectors: Reliable High-Frequency Solutions!
Amphenol RF offers a cutting-edge range of board-to-board RF connectors, designed for seamless high-frequency signal transmission. These connectors are essential for applications in 5G, IoT, automotive, aerospace, and industrial automation, ensuring reliable and high-performance connectivity in compact designs. 🔹 Key Benefits: ✔️ High-frequency performance ✔️ Secure and durable connections ✔️ Compact & versatile for modern PCB designs Watch this short to see how Amphenol RF’s board-to-board connectors optimize signal integrity across industries! 📌 Learn more: https://www.amphenolrf.com/board-to-board-rf-connectors 🔔 Subscribe for more RF solutions! #AmphenolRF #RFConnectors #PCBDesign #5G #IoT
Watch Video
Learn more about Amphenol RF's board-to-board and automotive solutions with Amphenol RF Asia product manager, Isabella Zhang.

Board-to-board solutions: https://www.amphenolrf.com/board-to-board-rf-connectors
Automotive Solutions: https://www.amphenolrf.com/automotive

Check us out on social media:
https://www.facebook.com/officialAmphenolRF 
https://www.linkedin.com/company/amphenol-rf/mycompany/ 
https://www.twitter.com/AmphenolRF

Our Website:
https://www.amphenolrf.com
Amphenol RF Technical Demonstration Series: Board-to-Board and Automotive Solutions
Learn more about Amphenol RF's board-to-board and automotive solutions with Amphenol RF Asia product manager, Isabella Zhang. Board-to-board solutions: https://www.amphenolrf.com/board-to-board-rf-connectors Automotive Solutions: https://www.amphenolrf.com/automotive Check us out on social media: https://www.facebook.com/officialAmphenolRF https://www.linkedin.com/company/amphenol-rf/mycompany/ https://www.twitter.com/AmphenolRF Our Website: https://www.amphenolrf.com
Watch Video

Send us a Message

Please fill in the form below and we will contact you very soon.

Fields marked with an asterisk (*) are required.