What this 0.30 mm pitch FPC connector is for
The 5047543920 is a 39-position FPC connector from Molex's BackFlip Easy-On LA75 series, with a 0.012" (0.30 mm) pitch — the tightest in the LA75 family. It's a right-angle surface-mount part with a flip-lock actuator that secures the FPC without a secondary latch. Rated at 0.2 A per contact and 50 V, this connector is strictly for signal-level circuits — not a power interconnect. The gold-plated contacts (3.94 µin gold over copper alloy) handle the limited mating cycles (10) typical of internal board-to-flex connections.
The 0.30 mm pitch demands a fine-line PCB footprint — the same pitch as the 37-position and 35-position siblings in the LA75 series (5047543720, 504754-3520). The 0.75 mm height above board keeps the connector low-profile for tight enclosures. The FPC must be 0.20 mm thick with a tapered cable end, and the connector accepts contacts on both top and bottom of the flex — useful for routing signals to either layer without a separate jumper.
Pricing and stock are confirmed per RFQ — we source this part against your BOM quantity. The tape-and-reel packaging (Cut Tape also available) suits automated pick-and-place assembly.