2.54mm Pitch Pin Headers & Dupont Connectors
1 resources tagged with "2.54mm"
2.54mm (0.1 inch) is the classic header pitch — the spacing on Arduino, Raspberry Pi GPIO, and most prototyping connectors — and it's the highest-volume, lowest-cost pitch coming out of China. The real sourcing variables are plating (cheap tin/brass vs gold over nickel for low contact resistance) and current rating, which is typically around 3A per pin on standard 2.54mm headers. MOQs are low and per-piece cost is fractions of a cent, so the risk isn't price but plating quality and pin retention.
When you buy 2.54mm headers, the common trap is a factory shipping bare brass or thin flash gold instead of the gold-plated contacts you specified, which corrodes and raises resistance over time. We check plating thickness and pin pull-out, not just pitch.
Wiki (1)
FAQ
What current can a 2.54mm pin header carry?
Standard 2.54mm headers are rated around 3A per pin, depending on contact material and plating. For higher current, use larger pitch or multiple paralleled pins.
Is gold or tin plating better for 2.54mm Dupont connectors?
Gold over nickel gives lower, more stable contact resistance and better corrosion resistance for repeated mating; tin or bare brass is cheaper but degrades faster. Specify plating thickness, since 'gold' can mean a near-useless flash layer.
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