2.50 mm pitch, 2-position header with locking ramp
JST B02B-XASK-1 is a 2-position, single-row header from the XA series, on 2.50 mm pitch. It's a shrouded 4-wall design with a locking ramp that clicks into the mating receptacle housing — no chance of the pair backing apart under cable tension or vibration.
This header mates with JST XA series crimp receptacles — the locking ramp on the header engages the latch on the receptacle housing for a positive lock. The through-hole termination accepts press-fit or solder assembly; the 0.134" post length suits standard PCBs. Mated stack height is 11.3 mm, measured from the board surface to the top of the receptacle. The natural (beige) insulation colour is standard for the XA series.