MCON 1.2 Receptacle, 3-Position, Key B — Free-Hanging Sealed Housing
This is the Key B variant, identified by the brown housing colour — the keying prevents cross-mating with other key positions in the MCON system. The 4.00mm pitch matches the standard MCON 1.2 terminal format, accepting the common 1.2mm blade width. The glass-filled nylon housing is rated for -40°C to 150°C operation, putting it in the underhood and industrial enclosure class. This is an active-production part, ROHS3 compliant.
Keying and Position Assurance — CPA and TPA Included
The brown housing signals Key B orientation, one of several keying options in the MCON 1.2 family. This matters when multiple MCON connectors share a harness — the keying prevents inserting the wrong receptacle into a given header. The integrated CPA (Connector Position Assurance) locks the mated pair and provides a visual/tactile check that full engagement is achieved. The TPA (Terminal Position Assurance) retainer locks each crimped terminal into its cavity, preventing back-out under vibration. Both features are standard on this housing, not optional add-ons.
Temperature Range and Sealing
Rated for -40°C to 150°C continuous operation, this housing is designed for the thermal extremes found in engine compartments, transmission interfaces, and industrial cabinets near heat sources. The sealed construction, combined with the CPA/TPA hardware, makes it suitable for applications where moisture, dust, and vibration are present — typical of automotive underhood and off-highway vehicle harnesses.
For BOM planning, the base product number is 2098541, and the 3-position Key B variant is the -6 suffix.