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S12B-XASK-1 — JST product photo
JST

S12B-XASK-1 JST XA Header – 12 pos, 2.5 mm, R/A

MPNS12B-XASK-1
Active

JST XA series, S12B-XASK-1, Board to Cable/Wire header, 12 circuits, 2.50 mm pitch, right-angle through-hole, shrouded 4-wall, locking ramp, board lock, 3 A, 250 V, tin-plated contacts, UL94 V-0.

$1.0500Ref. price · indicative, final on quote
S12B-XASK-1 datasheet
StockContact for availability
Lead timeIn Stock wk
MOQ1 pcs
  • New & original stockTraceable channels only — no mixed lots, no re-taped reels.
  • Factory packaging where availableSealed reels, trays and bags; cut quantities always stated on the quote.
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Specifications

S12B-XASK-1 Technical Specifications
ParameterValue
SeriesXA
GenderMale Pin
Mounting typeThrough Hole, Right Angle
Connector typeHeader
Fastening typeLocking Ramp
Voltage rating250V
Current rating3A
Operating temperature-25°C ~ 85°C
Contact materialCopper Alloy
Insulation colorNatural
Insulation height0.299\" (7.60mm)
Insulation materialPolyamide (PA66), Nylon 6/6, Glass Filled
Material flammability ratingUL94 V-0
StyleBoard to Cable/Wire
PackageBulk
FeaturesBoard Lock
ShroudingShrouded - 4 Wall
TerminationPress-Fit, Solder
Contact shapeCircular
Rows1
Pitch0.098\" (2.50mm)
Positions12
Contact finish - postTin
Contact length - post0.126\" (3.20mm)
Contact finish - matingTin

Product details

The S12B-XASK-1 is a 12-position, single-row header on 2.50 mm pitch from JST's XA series.

3 A per circuit – signal-level current ceiling

The tin-plated mating surface keeps contact resistance low for intermittent mating cycles but isn't rated for the high-cycle duty of gold-plated connectors.

Board lock and press-fit termination

Insulation height of 0.299" leaves clearance under the shroud.

Peer comparison: 11 vs 13 positions

The XA series includes S11B-XASK-1 (11 positions) and S13B-XASK-1 (13 positions) with identical pitch, current rating, locking ramp, and board lock. The only difference is circuit count — choose the one that matches your wire-count exactly; the footprint scales one position per 2.50 mm.

Frequently asked questions

How many positions does S12B-XASK-1 have?

The S12B-XASK-1 has 12 positions, all loaded, in a single row on 2.50 mm pitch.

Is S12B-XASK-1 RoHS compliant?

No — the S12B-XASK-1 is listed as RoHS non-compliant. Verify your assembly's exemption policy before committing the BOM line.

What is the mating connector for S12B-XASK-1?

This header mates with a JST XA series crimp receptacle housing, such as the XAP-12V, using the appropriate crimp terminals. The locking ramp and 2.50 mm pitch are common across the XA series.

Where can I buy S12B-XASK-1?

Availability and pricing confirmed at quote time.