The TE 5-177905-1 is a 12-position plug housing from the Power Double Lock series, with 0.156" (3.96mm) pitch and three rows. The natural PA66 housing is glow wire compliant. The latch lock fastening secures the mated pair, and the free-hanging mount suits harness runs.
Terminal Selection — Contacts Not Included
The housing accepts the standard TE 177904-series crimp terminals (tin or gold plating depending on your current and cycle-life requirements). The crimp termination gives you a gas-tight connection on the wire, and the housing's secondary lock (the TPA, terminal position assurance) is built into the design — you'll feel it click when the terminal is fully seated. For wire gauge, the Power Double Lock terminal range typically covers 20-16 AWG; confirm the exact wire size against the terminal datasheet before you order.
Mating Half and Assembly
The 5-177905-1 mates with the Power Double Lock pin header (through-hole or right-angle, depending on your board layout) that matches the 12-position, 3-row, 0.156" pitch layout. The row spacing is 0.181" (4.60mm), which gives the three rows enough room for the terminal bodies and the locking features. For a board-mounted application, the header's through-hole tails need a 3.96mm pitch footprint; the free-hanging housing simply clips onto the header after the terminals are crimped and inserted.