12-Position IDC Receptacle for Discrete or Ribbon Cable
The TE Connectivity MTA-156 4-640427-2 is a 12-position IDC receptacle designed for mass-termination of 20 AWG discrete or ribbon cable. It uses the 0.156" (3.96mm) pitch standard to the MTA-156 series, with a single row of tin-plated female sockets. The closed-end housing prevents wire over-insertion and provides a positive stop during assembly, while the integral locking ramp secures the mate to the matching header.
Tin Plating and IDC Termination
The IDC termination displaces the insulation and cold-welds to the conductor, making it suitable for high-volume harness production. The 20 AWG wire gauge is the specified size for this receptacle; using the correct wire diameter is critical for the IDC slot to bite properly and maintain contact force.
Mating Header and Locking Ramp
This receptacle mates with the standard MTA-156 header (e.g., TE 640441 series), which carries the same 0.156" pitch and locking ramp feature. The yellow housing color aids visual identification in multi-wire bundles, a common practice in MTA-156 harness assemblies.