5103311-5 is a low-profile pin header connector designed for reliable PCB board-to-board interconnection applications. This 20-position header features a 0.100 inch (2.54 mm) pitch and is configured with plating code A (duplex plated with gold flash on mating surfaces and tin on solder area). The connector has a recommended PCB hole layout with dimension A of 1.300 inches (33.02 mm) and dimension B of 0.900 inches (22.86 mm), accommodating standard through-hole mounting. With its compact form factor and RoHS-compliant construction, this header is ideal for applications requiring space-efficient interconnection in consumer electronics, industrial equipment, and data communication systems.