77313-118-20LF

This is a 20 position unshrouded header from Amphenol ICC, part number 77313-118-20LF. It features male pins arranged in two rows with a 2.54mm pitch and 2.54mm row spacing. The contacts are made of phosphor bronze with a 30.0µin tin finish, providing reliable conductivity and corrosion resistance. The header is designed for through hole mounting and solder termination, making it suitable for permanent connections to printed circuit boards. The insulation material is black thermoplastic rated UL94 V-0 for flammability. The header is rated for 3A per contact and operates over a temperature range of -65°C to 130°C. It is suitable for board-to-board or cable-to-board applications where a breakaway design allows individual pin removal if needed.

The overall contact length is 0.450" (11.43mm) with a contact length of 5.84mm, ensuring adequate insertion depth. The square contact shape provides consistent mating force. The fastening type is push-pull, indicating a friction-fit connection without locking mechanisms. This header is commonly used in prototyping, instrumentation, and industrial control systems where a reliable, low-cost interconnect solution is required. The breakaway design allows customization of the number of positions by breaking off individual pins, though this part comes fully loaded with all 20 positions populated.