SMB/Fakra Plug, Code L — 50 Ohm RF Interconnect
The 2FA1-NLSP-PCBB6: The locking ramp fastening distinguishes it from standard SMB push-on connectors — it provides positive retention against vibration, which is why Fakra variants are common in automotive antenna and telematics harnesses. The Code L keying (red/carmine housing) prevents cross-mating with other Fakra codes in multi-connector assemblies. The through-hole solder termination and shield solder tab suit it for PCB mounting in module-level RF applications. The zinc die-cast body with tin finish and PTFE dielectric are standard for this class, balancing RF performance with environmental sealing in non-weatherproof interior locations.
Code L Keying — Why It Matters for Harness Assembly
The 2FA1-NLSP-PCBB6 carries Fakra Code L keying (red/carmine housing), which is mechanically unique among the sibling variants. Compare it to the FA1-NCRP-PCB-8 (Code C, blue/signal housing), FA1-NDRP-PCB-8 (Code D, violet/claret housing), or FA1-NARP-PCB-8 (Code A, black/jet housing) — each uses a different plastic keying geometry and color. The locking ramp and 100 mating cycles are shared across all four; the choice comes down to which code your harness schematic specifies. No single-vendor lock — all are active Amphenol RF parts, but the keying is non-negotiable: a Code L plug will not mate with a Code C or D receptacle.