HD-EFI Adapters

Amphenol RF’s HD‑EFI adapters include both in-series HD‑EFI barrels and between-series transitions—like HD‑EFI to SMA—supporting flexible, high‑density RF integration. Optimized for minimal PCB space, these adapters are tailored for tight board-stack and mezzanine card layouts.

The HD‑EFI interface is a micro-miniature, three-piece connector designed for robust blind mating and misalignment compensation (±1.4 mm axial/radial float), accommodating board tolerance variances without compromising signal integrity. Rated for 50 Ω performance up to 6 GHz, it suits high-frequency designs in wireless, avionics, telecom, and defense equipment.

Features and Benefits

• High-Density Footprint – Ideal for compact PCB stacks and mezzanine configurations. 
• Blind‑Mate Capability – ±1.4 mm radial and axial float with crash-proof bullet adapter ensures reliable mating.
• Versatile Configurations – Includes in-series barrels and between-series SMA interface adapters.
• Robust Signal Quality – Maintains stable RF performance across 6 GHz in a small, sturdy package.
• Connector Saver Role – In-series adapters protect on-board mating surfaces and cable connectors from wear over time.

Applications

• Wireless Base Stations & Telecom – Compact multi-line board-to-board RF paths in high-performance modules.
• Military & Aerospace – Blind-mate capable connectors in rugged defense electronics.
• Broadband Routers & Network Equipment – Efficient RF interconnects in stacked PCB designs.
• Test & Measurement – Between-series HD‑EFI to SMA adapters support lab-grade testing.