120-Position Backplane Receptacle for High-Density Differential Routing
The Molex 761603020 is a 120-position receptacle in the Impact 76160 series, arranged as 12 rows by 10 columns. Termination is press-fit, which means no solder process — the compliant pin cold-deforms into the plated through-hole, giving a gas-tight joint that survives rework cycles.
Press-Fit Termination and Board-Mounting Details
The press-fit tail requires a specific PCB hole size and plated-through-hole diameter. The board edge, through-hole, right-angle mounting type means the receptacle sits flush against the backplane edge. The connector style is Impact, Guide Left, which means the alignment guide is on the left side when viewed from the mating face. This keying prevents incorrect orientation during card insertion and is consistent across the Impact 76160 family for tooling compatibility. The 30 V rating is typical for differential signal pairs — the voltage limit is set by the tight pitch and the creepage distance between adjacent contacts.
Comparing 761603020 with the 76160-3020 Variant
The 76160-3020 is the functional equivalent of the 761603020 — same 120 positions, same 0.053" (1.35 mm) pitch, same 12-row x 10-column layout, same press-fit termination, same gold plating thickness, and same active lifecycle status. The only difference is the order-code format: 761603020 is the standard 8-digit Molex catalog number, while 76160-3020 uses the older dash-separated convention. Either code sources the same physical part.