The 47219-2001 is a Molex Micro-Lock Plus 2-circuit (2-pin) board-to-wire connector header with 1.25mm pitch. It is a surface-mount header that mates with a corresponding crimp-style wire housing. The Micro-Lock Plus system features a positive locking mechanism that prevents accidental disconnection while allowing deliberate unmating. The 1.25mm pitch enables high-density PCB layout. The contacts use a tin-plated phosphor bronze alloy that provides reliable spring force and low contact resistance (less than 20mOhm). The housing is made of high-temperature thermoplastic (rated 260C for reflow compatibility) with a 250V/2A per-circuit rating. The locking mechanism uses a friction-based detent that produces an audible click when fully mated.