Board Footprint and Pinout — 0.100" Pitch, 20 Positions, Dual-Row
The 77313-118-20: All positions are loaded, so the pinout is a straight 2×10 grid. Overall contact length is 0.450" (11.43mm), with a 0.120" (3.05mm) solder tail — the tail length suits standard 1.6mm-thick PCBs without protruding too far past the solder side.
Contact Plating and Mating Durability — 30.0 µinch Gold or GXT™
Phosphor bronze contact material provides good spring retention and resists stress relaxation at elevated temperatures.
Lifecycle Reality — Obsolete, Sourced per RFQ
No direct replacement or successor is listed under the 77313 base number. For a BOM line that needs this exact pinout and pitch, the only channel is independent-distributor surplus or NOS stock. If you need a production-volume alternative, the BERGSTIK® series includes many active dual-row 0.100" pitch headers; the closest fit will share the same 20-position, 2×10 layout and unshrouded form factor.
Mounting and Housing — Through-Hole, UL94 V-0, No Shroud
Through-hole termination with tin-plated posts — the solder joint is the mechanical anchor; there are no board locks or additional retention features.