The M40-3100345R is a 6-contact 1mm female DIL Board-to-board Socket with gold plated phosphor bronze contacts, gold plated termination and black UL94V-0 polyamide (nylon) 6T housing. The M40 series receptacle has vertical connector orientation, surface mount (SMT) connection type and top entry style. Locating pegs to ensure correct positioning onto the board. Twin beam female connector for higher durability. It is suitable for use with 0.3mm square mating pin size.