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.
BM12B-XASS-TF JST XA Series Header 12 Pos 2.5mm SMT
MPNBM12B-XASS-TF
Active
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
$1.7800Ref. price · indicative, final on quote
RoHSRoHS non-compliant
SeriesXA
Source DocumentedChannel stated on listing & quote
Condition PhotosReal unit photos / video on request
WhatsApp AnswersFast human replies for stock & sourcing questions
Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Aug 2026
Specifications
| Parameter | Value |
|---|---|
| Series | XA |
| Type | Male Pin |
| Mounting | 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 |
All specifications
| Parameter | Value |
|---|---|
| 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 |
Product details
Frequently asked questions
What is the BM12B-XASS-TF mating connector?
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.