JST JMC 50RF-JMCS-G-1B-TF(N)(LF)(SN) — 50-Position, 0.50mm Pitch Receptacle
The 0.020" (0.50mm) pitch packs 50 contacts into a compact footprint, with the center strip contact arrangement typical of mezzanine or parallel-board stacking.
This part is marked Obsolete.
The 0.020" (0.50mm) pitch is tight — the board footprint must match the contact pattern exactly, and trace escape from the inner rows of a 50-position, dual-row layout requires either via-in-pad or fine-line routing. The 0.130" (3.30mm) height above board gives a low-profile mezzanine stack, but the mating header's height also sets the final gap. Gold contacts handle the insertion cycles typical of a production board or field-service disconnect without fretting corrosion.