The 0.055" (1.40 mm) card thickness it accepts is the dimension you need to match against your PCB edge — too thick and the card won't seat, too thin and the contacts lose normal force.
Why the Press-Fit Termination Matters for Your Assembly
This avoids thermal stress on the connector housing and the PCB, and it makes field replacement possible — a damaged connector can be staked out and a new one pressed in without desoldering.
