2.54mm Pitch High Current 5A Dual Contact Female Header Connector Power PCB Socket

Most 2.54mm headers are rated at two or three amps, which is fine for signals and marginal for power. This variant raises the ceiling to 5A per contact by using two independent spring fingers on each terminal instead of one, doubling the conductive path and the normal force at the same time. The thicker 0.30mm phosphor bronze stock also lowers the temperature rise that would otherwise limit current in a dense connector block.

Because the contact dissipates more heat, the insulator moves up to PA9T and the body is moulded with wider air gaps between cells so that heat leaves the pin field instead of soaking into the housing. The result is a connector that carries motor current, LED driver current or heater current through the same 2.54mm footprint engineers already use for signals, avoiding a separate terminal block on boards that have no room for one.

• 5A per contact: Dual spring fingers double the conductive path and normal force, raising the rating well above standard 3A sockets.
• 0.30mm phosphor bronze: Thicker contact stock lowers temperature rise so the current rating holds in dense blocks.
• Dual contact springs: Two independent fingers maintain pressure if one relaxes, improving reliability under vibration.
• PA9T high temperature body: Handles 125 C ambient operation and 260 C reflow without softening around the contact cells.
• Open cell airflow: Wider moulded gaps let heat escape the pin field instead of soaking into the insulator.
• Same 2.54mm footprint: Replaces a standard signal header without changing the PCB land pattern or mating post.

High current 2.54mm headers are used where a board needs to move power without adding a screw terminal. Motor driver boards use them to hand off phase current to a power stage, LED luminaires use them to bridge a driver board and a light engine board, and battery management systems use them to bring cell harness current onto the measurement PCB. They also appear in heating controllers, where a relay board feeds resistive loads, and in rail signalling modules that must survive elevated ambient temperatures. In each case the connector carries several amps while keeping the assembly serviceable.

We can tune the contact to your current profile: a 6A variant with thicker plating is available, and a version with one power pair and the remaining positions as standard signal contacts is produced on request. Positions from 2 x 2 to 2 x 20 are cut from strip without tooling charges. Optional features include a polarising wall to prevent reversed power insertion, a keyed first position, gold thickness at 0.76 or 1.27 micron for high reliability programmes, and a locating peg for automated assembly. Engineering support includes a current derating curve for your ambient temperature and board copper area.

Packed 1000 pieces per anti-static bag with desiccant, ten bags per export carton. Because these parts run warm in service, every carton carries the production lot number that links to the current derating test record for that batch. The carton is foam lined so the contact springs are not pre loaded in transit, and the inner bag is heat sealed against humidity. Gross weight is held under 15 kg for air freight, and sea freight is palletised and stretch wrapped. Own-brand labels, barcoded cartons and drop tested packaging are available. Each shipment includes a contact resistance report, a plating thickness certificate and a temperature rise test summary.