RF Board to Board Connectors

HD-EFI Connectors

The HD-EFI product series is a micro-miniature interface designed to allow large board tolerance stack ups, blind mating, and multiple RF lines. It is available in common PCB jack and cable plug configurations, with an assortment of bullet adapters to accommodate many board to board spacing options. The HD-EFI interface is designed to allow for a very stable RF signal over the full axial range of the connector system. It has generous “float” to compensate for the axial and radial misalignment tolerance common in small package sized applications.



Related Products:

HD-EFI Bullets               HD-EFI PCB Connectors

Amphenol Floating Interface (AFI)

The AFI interface utilizes a proprietary design that provides the industry’s leading “float” to compensate for axial and radial misalignment due to packaging tolerances. This float results in a maximum misalignment allowed by the system of ±0.015” (±0.38 mm) radial and ±0.020” (±0.50 mm) axial. The shrouded design and floating bullet of the AFI allows mating to occur when there is misalignment of the radial and axial planes between connectors.

We offer a variety of products to meet a wide range of PCB spacing from 12.7 mm(1.2") to 25 mm (1") and easy to select A+B dimensions allow for a customized level of performance with "off the shelf" parts.

Related Products:

 AFI Plugs               AFI Jacks               AFI Bullets


SMP Connectors

SMPs are often used in miniaturized high frequency coaxial modules and offer RF performance from DC to 40GHz. The interface is ideal for printed circuit board and hi-density modular packaging applications. The interface series utilizes a male connector on each of the PC boards and a female-to-female adapter mounted in between to complete the connection.



The female adapter is often called a bullet and is necessary to provide a flexible link allowing for ±0.020” (±0.50 mm) of radial float and ±0.010” (±0.25 mm) of axial float. One male connector is typically specified as a snap-on interface and the other as a push-on, ensuring that the bullet adapter remains fixed in the same male connector if the PC boards are separated. The bullets are available in multiple lengths to allow for different board spacing.

Related Products:

SMP Bullets               SMP PCB Connectors


SMPM Connectors

The SMPM interface is a micro-miniature interface with a frequency range of DC to 65 GHz. It is commonly used in miniaturized high frequency coaxial modules and is offered in both push-on and snap-on mating styles. This family of interconnects addresses all package design needs; it can be utilized as a highly shielded interconnect for high data rate applications or in a board-to-board system using a floating bullet. 


Related Products:

SMPM PCB Connectors               SMPM Bullets               SMPM Cable Assemblies

PSMP Connectors

PSMPs are the perfect solution for board-to-board applications requiring high power. With a minimum board spacing of 12.6 mm, the three-piece design allows maximum flexibility for high-density board spacing, and is an ideal solution for blindmate situations.

PSMP connectors are the best combination of SMPs and SMAs. They are compact, board-to-board designs capable of high-performance and high-frequency. The PSMP has the exact same PCB footprint as the SMP, allowing for easy conversion of applications for higher power handling.

Related Products:

PSMP Bullets               PSMP PCB Connectors

Features and Benefits of Board to Board Solutions

  • Designed to accommodate both radial and axial misalignment
  • True blind-mate solutions
  • High-density packaging
  • Custom configurations available


  • Wireless Infrastructure
  • CATV
  • Broadband Communications
  • Active Antennas
  • Handheld Devices
  • Ganged Connections

Product Literature

AFI Brochure

SMP Brochure

PSMP Brochure