5-103904-4 is a latching header connector assembly from the AMPMODU Interconnection System, designed for single-row PCB applications with 4 contact positions. The connector features a 0.100 x 0.100 inch (2.54 x 2.54 mm) centerline spacing and is available with latching mechanisms for secure mating. The housing is constructed from glass-filled thermoplastic rated 94V-0, with duplex gold plating on contact areas and matte tin plating on solder areas for reliable electrical performance. This connector is compatible with 26-22 AWG (0.12-0.3 mm²) wire gauges and supports both standard solder tails and board retention tail configurations. The product is RoHS compliant and suitable for applications requiring reliable interconnection in compact PCB layouts.