What This 50 Ohm HD-EFI Plug Is For
The Amphenol RF 920-503J-53P is a male pin plug from the HD-EFI series, a push-pull, smooth-bore RF interconnect built for applications that need a reliable 50 Ohm signal path up to 6 GHz. The 0.1 dB insertion loss across the band tells you the contact interface is clean and the impedance match is tight — you won't lose signal budget to the connector. With 200 mating cycles rated, this plug is designed for test equipment, instrumentation panels, or any setup where the cable gets disconnected and reconnected regularly without degrading the RF performance.
200 mating cycles is a solid number for a push-pull RF connector. The through-hole solder termination and shield termination are both solder, so once it's on the board, it's permanent; the mating cycles are all in the cable end, not the board mount.