50 Ohm SMB/Fakra Jack for RG-58 and LMR-195 Coax
The 3FA1-NFSJ-C04W6: The latch lock is the Fakra secondary retention feature, distinct from the push-on SMB snap, giving a positive mechanical lock against vibration in automotive and telecom harnesses.
Cable Prep and Crimp — What the Cable Group Tells You
The cable group list (RG-58, LMR-195, Belden 9907, etc.) is the die-set reference: each cable diameter and dielectric type requires a specific crimp hex size for the centre contact and ferrule. Using a cable outside this group means the strip length and crimp dimensions are unverified — the 50 Ohm impedance and pull-off force are only guaranteed within the listed group. The shield termination is a crimp ferrule over the braid; the centre contact is a separate crimp operation onto the signal conductor.
3 GHz Bandwidth and 100-Cycle Durability
The 3 GHz max frequency covers most cellular, GNSS, and short-range wireless bands. Above 3 GHz the SMB interface geometry introduces mismatch loss.
Code F Keying and Fakra Compatibility
The Code F keying is one of the Fakra colour/slot variants — it prevents cross-mating with other Fakra codes (A, B, C, D, E, G, H, I, K, L) in the same harness bundle. The housing is brown, which is the visual identifier for Code F in the Fakra colour scheme.
Materials and Operating Range
Zinc die-cast body with tin finish, PTFE dielectric, brass centre contact with gold plating. The PTFE dielectric maintains stable impedance across the temperature range and resists moisture absorption better than nylon or PE dielectrics.