JST XH Connector Pinout Verification


Verify exact JST S3B-XH-A(LF)(SN) existing sideentry3pin part for8receiver headers. Primary https://www.jst-mfg.com/product/pdf/eng/eXH.pdf verifies3A22AWG,250V,XHP-3 housing SXH-001T-P0.6 contact28–22AWG. Inspect actual symbolic pin1/2/3 and footprint; research exact manufacturer drawing visually if general catalog does not identify pin1 numbering; verify topview/key,mate,hole0.9mm,pitch2.5mm geometry. No receiver layout/no invented mapping. Readonly when lack edit access; report modeldefects and evidence primary drawing URL/fullpartURL. Source differentialP1 CHASSIS2 differentialN3 remains unchanged.
I’ll check the connector’s pins and footprint against JST’s drawings, without changing the part or the receiver’s pin mapping.
Inspected the exact Flux part: symbol pins 1/2/3 are passive, and the top-view footprint places 1 at right (square), 2 center, 3 left, with 2.50 mm pitch, 1.00 mm drills, 1.508 mm pads, and a **9.9 × 11.5 mm outline; the rendered model’s leads visually align with the pads, with no obvious model defect.
JST’s catalog confirms 3 A at 22 AWG, 250 V, XHP-3 housing, SXH-001T-P0.6 contacts for 28–22 AWG, and Ø0.9 +0.1/−0 mm holes—the library drill is at that tolerance’s upper limit, not automatically incorrect.
Primary-drawing visual verification of pin 1 relative to the key/mating face remains unresolved because view-only access blocked the PDF-rendering workspace, so I have not approved that orientation or changed anything; the required receiver assignment remains 1 = differential P, 2 = CHASSIS, 3 = differential N.

PCB layout of S3B-XH-A(LF)(SN)

S3B-XH-A(LF)(SN)