Position count and pitch — the footprint anchor
The B13B-XASK-1-A(LF)(SN): The through-hole termination with a 3.00 mm post length gives a solid solder joint on the PCB, and the board guide helps align the header during assembly.

JST Sales America Inc. XA series, Board to Cable/Wire header, 13 positions, 2.50mm pitch, shrouded 4-wall, locking ramp, through hole, tin contacts, 3A, 250V, UL94 V-0.
| Parameter | Value |
|---|---|
| Series | XA |
| Gender | Male Pin |
| Mounting type | Through Hole |
| 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 | 0.346\" (8.80mm) |
| Insulation material | Polyamide (PA66), Nylon 6/6, Glass Filled |
| Mated stacking heights | 11.3mm |
| Material flammability rating | UL94 V-0 |
| Style | Board to Cable/Wire |
| Package | Bulk |
| Features | Board Guide |
| Shrouding | Shrouded - 4 Wall |
| Termination | Press-Fit, Solder |
| Contact shape | Circular |
| Rows | 1 |
| Pitch | 0.098\" (2.50mm) |
| Positions | 13 |
| Contact finish - post | Tin |
| Contact length - post | 0.118\" (3.00mm) |
| Contact finish - mating | Tin |
The B13B-XASK-1-A(LF)(SN): The through-hole termination with a 3.00 mm post length gives a solid solder joint on the PCB, and the board guide helps align the header during assembly.
No stock-holding claim is made; submit an RFQ for a firm commitment.
The mating pitch is 0.098" (2.50 mm), single-row, 13 positions.
Yes, it carries RoHS compliance.
This header mates with the JST XA series receptacle housing (e.g., XARP-13V or similar) that accepts the appropriate crimp terminals. The locking ramp and 2.50 mm pitch are the key compatibility checks.
The closest functional alternative is the non-LF version B13B-XASK-1-A (same form, fit, and function, but without the RoHS suffix). For a different position count, the 14-position B14B-XASK-1-A(LF)(SN) shares the same pitch, current rating, and locking ramp.