Flexible Board-to-Board RF Connectors Solutions

Coaxial connectors offer ideal solution for blindmate applications

Amphenol RF board-to-board connector solutions feature compact, small-footprint designs with industry leading float to provide a maximum tolerance for radial and axial misalignment, making these interconnects ideal for blind mating applications. Amphenol RF offers a wide variety of connector configurations in AFI, SMP and PSMP interfaces to provide maximum flexibility to board to board designs.

Mating Configurations

Parallel

Co-Planar

Right-Angle

Board-To-Board RF Connector Types

AFI Board-To-Board RF Connectors

The AFI connector series is a board-to-board solution for RF applications commonly used in military and broadband applications. The AFI interface utilizes a proprietary two-piece configuration that compensates for high axial and radial misalignment with industry leading float (0.030” [0.8 mm] radial and 0.040” [1.0 mm] axial). 50 ohm AFI connectors operate to 6 GHz and 75 ohm options support a maximum frequency of 3 GHz.

HD-EFI Board-To-Board RF Connectors

The HD-EFI connector system is a 50 ohm three-piece board-to-board solution offering excellent performance through 6 GHz. It is an ideal board-to-board solution where space constraints exist or where PCB stack heights vary. The HD-EFI supports blindmating needs with a crash-proof, closed entry contact design.

P-SMP Board-To-Board RF Connectors

The P-SMP connector series is a board-to-board solution for RF 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. The interface is capable of continuous power handling of 220 W at 2.2 GHz making it ideal for wireless antenna applications.

SMP Board-To-Board RF Connectors

The SMP connector system is a 50 ohm board-to-board solution offering performance through 26.5 GHz, with the ability to enhance performance to 40 GHz for some designs through PCB optimization analysis. This dependable mating system utilizes the three-piece configuration, and a design focused on keeping a consistent RF signal with ample float (0.020” [0.51 mm] radial and 0.010” [0.25 mm] axial). This performance focus makes SMP connectors a good choice for military, measurement and quantum computing applications.

SMP Non-Magnetic Board-To-Board Connectors

Amphenol RF offers a variety of non-magnetic SMP connectors and adapters constructed from non-ferrous materials and platings. These high-performance RF interconnects feature low magnetic field susceptibility and no electric field distortion while providing the same reliable connections for board-to-board and board-to-cable as standard SMP products. Non-magnetic SMP options are ideal for sensitive medical, aerospace, and quantum computing applications.

SMPM Board-To-Board RF Connectors

The SMPM interface is a micro-miniature interface with an optimized frequency range of DC to 65 GHz. This series is a smaller version of the SMP, with full detent and smooth bore mating systems providing mating force options. This family of interconnects addresses small package, high-performance design needs, with float (0.020” [0.51 mm] radial and 0.010” [0.25 mm] axial) designed to maintain a strong RF signal.

Board-To-Board Product Summary

List of users
  High-Frequency High-Power High-Float
  SMPM SMP P-SMP AFI HD-AFI HD-EFI
Impedance 50 Ohm 50 Ohm 50 Ohm 50 Ohm | 75 Ohm 75 Ohm 50 Ohm
Max Frequency 65 GHz 40 GHz 10 GHz 6 | 3 GHz 18 GHz 6 GHz
Min PCB Spacing 6.6 mm 9.1 mm 12.6 mm 12.7 mm 11.5 mm 11.5 mm
Power Handling 50 W @ 2.2 GHz @ 25˚ C 30 W @ 2.2 GHz @ 25˚ C 200 W @ 2.2 GHz 200 W @ 2.2 GHz @ 8.8˚ C 10 W @ 2 GHz @ 25˚ C 40 W @ 2.2 GHz @ 85˚ C
Axial Misalignment 0.25 mm 0.25 mm 2.00 mm 1.00 mm 2.00 mm 1.40 mm
Radial Misalignment 0.51 mm 0.51 mm 1.32 mm 0.80 mm 0.80 mm 0.7 mm

Additional Resources

Board-to-Board Solutions Overview