20-Pin Unshrouded Breakaway Header
The 77313-452-20LF: Tin at this thickness handles moderate mating cycles — expect 50 to 100 cycles before wear-through, which suits one-time assembly or infrequent rework. The 3 A per-contact current rating is conservative for tin at 25 °C; derate above 85 °C ambient per the standard curve.
The base product number is 77313; the -452-20LF suffix specifies the 20-position, dual-row, tin-plated variant. No official pin-compatible replacement has been announced — if you need a shrouded or gold-plated version, look at other BERGSTIK® order codes in the same 0.100" pitch family.