The 0.156" (3.96mm) pitch matches the standard MTA-156 header footprint, and the closed-end housing prevents the wire from pushing through the back during assembly. The orange color aids visual circuit identification in a harness.
Mating Header and Harness Fit
The 3-640477-2 mates with any standard MTA-156 0.156"-pitch header, such as the TE 640445 series. The free-hanging (in-line) mounting style lets it terminate a cable end directly, and the single-row, 2-position layout fits a 2-circuit harness position. The closed-end feature is a practical safeguard against wire push-out during assembly.