The BG301-04-A-0540-L-B is a 4-contact 2.54mm white right angle Board-to-board Header with gold plated copper alloy contacts and an UL94V-0 natural LCP 30% glass filled polyester standard insulator. The BG301 series header has surface type PCB mount and 5.4mm post length (standard when mating with BG300). LCP is suitable for IR reflow, wave and manual solder.