34-position, 0.100" pitch, right-angle — the board-edge signal header
This header mates with AMP-Latch receptacles that accept 0.100" pitch IDC ribbon cable or discrete wire connectors. The 34-position count is common for parallel I/O or data buses. On site, if you're replacing a damaged header, confirm the existing harness uses a 34-position, 0.100" pitch IDC socket — the keying slot orientation must match to avoid a forced mis-mate. The solder tails are 0.135" (3.43 mm) long, tin-plated, and square pins — standard for through-hole wave solder.
Peer comparison — 1379030-3 vs 5103310-7
The 5103310-7 has 34 positions versus 12, push-pull versus friction lock, and gold versus tin mating finish. If your BOM calls for 34 circuits and gold-plated mating cycles, the 5103310-7 is the correct choice — the 1379030-3 is a lower-position, tin-finish alternative with a different retention mechanism.