12-position 2.50 mm pitch SMT header with locking ramp
The BM12B-XASS-TF is a 12-position, single-row header from JST's XA series, on a 2.50 mm pitch.
Mates with XA series crimp receptacles
The mated stack height is 11.9 mm.

JST XA series, Board to Cable/Wire, Header, Male Pin, 12 Positions, 1 Row, 0.098" (2.50mm) Pitch, Surface Mount, Solder Termination, Locking Ramp, Shrouded - 4 Wall, Tin Mating Finish, 3A, 250V, UL94 V-0, -25°C ~ 85°C, Mated Stacking Heights 11.9mm
| Parameter | Value |
|---|---|
| Series | XA |
| Gender | Male Pin |
| Mounting type | Surface Mount |
| Connector type | Header |
| Fastening type | Locking Ramp |
| Voltage rating | 250V |
| Current rating | 3A |
| Operating temperature | -25°C ~ 85°C |
| Contact material | Copper Alloy |
| Insulation color | Natural |
| Insulation height | 0.370\" (9.40mm) |
| Insulation material | Polyamide (PA), Nylon |
| Mated stacking heights | 11.9mm |
| Material flammability rating | UL94 V-0 |
| Style | Board to Cable/Wire |
| Package | Bulk |
| Features | Solder Retention |
| Shrouding | Shrouded - 4 Wall |
| Termination | Solder |
| Contact shape | Circular |
| Rows | 1 |
| Pitch | 0.098\" (2.50mm) |
| Positions | 12 |
| Contact finish - post | Tin |
| Contact finish - mating | Tin |
The BM12B-XASS-TF is a 12-position, single-row header from JST's XA series, on a 2.50 mm pitch.
The mated stack height is 11.9 mm.
It mates with JST XA series crimp receptacle housings. The locking ramp on the header engages with the receptacle latch. Confirm the mating half part number with your receptacle housing order.