What This Fakra Jack Is and What It Connects
The Amphenol RF FA1-NZSJ-C01-0 is an SMB Fakra jack (female socket) with a 50 Ohm impedance, designed for 6 GHz operation. It's the Code Z variant in the FA1-NZSJ series, meaning the keying and color coding are specific to that application — the housing is blue and water-colored, which tells you which mating plug it accepts without looking at the pinout. This is a 5-piece kit: you get the connector body, one contact, one ferrule, one housing, and one locking clip, all in one bag. That saves the headache of ordering five separate line items for a single termination.
Cable Match and Termination — Get the Crimp Right
This jack terminates to RG-174, RG-188, RG-188A, RG-316, LMR-100, and M17/119-RG174 — that's the standard small-diameter 50 Ohm coax family. If you're running RG-58 or LMR-400, this isn't the body for that reel. The contact and shield both crimp on (contact termination is crimp, shield termination is crimp), so you need the correct crimp die for the ferrule and the center contact. The dielectric is PTFE, which holds up to the soldering iron if you prefer to solder the center pin, but the listed termination is crimp. The body is brass with nickel finish — durable for under-hood or infotainment harness work where the connector sees some handling.
RF Performance and Mating Cycles
Rated to 6 GHz with a 0.3 dB insertion loss, this jack covers GPS, cellular, and short-range wireless bands cleanly. The 100 mating cycles are typical for a Fakra latch-lock connector — enough for a production harness test and a few field swaps, but not a daily-connect test port. The latch lock fastening means it clicks into the mating plug and stays there without a secondary screw — common in automotive and telecom where vibration is present but you still need quick disconnect.