The Amphenol RF 2FA1-NBSP-PCBB6 is a single-port FAKRA-standard SMB plug with male pin contacts. It carries the Code B keying variant, which prevents cross-mating with other FAKRA color-code positions in the same harness bundle. Rated for 50 Ohm impedance and a maximum frequency of 3 GHz, this connector is built for automotive-grade RF interconnects — think GPS antennas, satellite radio, cellular telematics modules, and similar 50-Ohm signal paths inside a vehicle or equipment enclosure.
Code B Keying — Why It Matters for Your Harness
FAKRA connectors use a mechanical keying system — a color-coded plastic housing and a corresponding key on the mating receptacle — to ensure only the correct signal path gets connected. Code B on this plug corresponds to a specific color and key geometry. Code A (black, FA1-NARP-PCB-8) might be a cellular path, Code C (blue, FA1-NCRP-PCB-8) a satellite radio feed, and Code D (violet, FA1-NDRP-PCB-8) a diversity antenna.
3 GHz Bandwidth — What It Means for Signal Integrity
The 3 GHz maximum frequency at 50 Ohm impedance covers most current automotive RF bands — GPS at 1.575 GHz, SiriusXM at 2.3 GHz, and 4G LTE cellular bands up to about 2.7 GHz. It does not reach the 6 GHz ceiling of the sibling FA1-NCRP-PCB-8, so if your design targets 5 GHz Wi-Fi or future 6 GHz automotive V2X bands, step up to that Code C variant. The gold-plated brass center contact and solder termination keep the signal path clean through the board interface.
Through-hole mounting with solder termination for both the center pin and the shield.