Is there a pin-compatible replacement for XH-3AW?

Several parts like JST's S3B-XH-A(LF)(SN) and Megastar's ZX-XH2.54-3PLT appear to be pin-compatible, sharing the same 3-pin, 2.5mm pitch, right-angle through-hole layout. However, verifying the datasheet's mechanical drawing is crucial before production.

What risks should I check before replacing XH-3AW?

The main risks are mechanical. Verify the PCB footprint, connector height, and shroud dimensions from the datasheet. Also, check for differences in housing material, plating, and temperature ratings to ensure long-term reliability.

XH-3AW Alternatives, Datasheet & Cross Reference | Manufacturer

XH-3AW is a common 3-pin, 2.5mm pitch right-angle header. Alternatives from original manufacturer JST and other compatible suppliers are available, but require verification of mechanical dimensions for a successful replacement.

AI replacement insight

Package riskmedium

Clones may have slight tolerance variations; datasheet verification is essential.

Electrical risklow

Key electrical ratings (3A, 250V) are standard and easily matched.

Sourcing risklow

The XH series is a multi-sourced, high-volume connector family.

Can it be replaced directly?

Yes, direct replacements for XH-3AW exist, such as S3B-XH-A(LF)(SN) from JST. These share the same critical specifications but require datasheet verification for mechanical tolerances.

Best replacement path

The most reliable replacement path is using the original JST part, S3B-XH-A(LF)(SN), which ensures compatibility with the XH connector ecosystem.

Main risk

The primary risk is a subtle mismatch in mechanical dimensions (footprint, height, shroud size) which could prevent proper PCB assembly or mating.

Recommended alternatives

A strong alternative from JST, the original XH series manufacturer, with matching electrical ratings and form factor.

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Alternative comparison matrix

Feature / factor	XH-3AW	S3B-XH-A(LF)(SN)	ZX-XH2.54-3PLT	Compatibility / risk
Package	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle	Through Hole, Right Angle — Matches target's form factor. JST is the original XH series manufacturer.; ZX-XH2.54-3PLT: Matches target's mounting style and orientation.
Current	3A	3A	3A	3A — matched; ZX-XH2.54-3PLT: matched
Voltage	250V	250V	250V	250V — matched; ZX-XH2.54-3PLT: matched
Temperature	Not specified	-25°C to +85°C	-	-25°C to +85°C — Standard operating range, likely matches target.
Manufacturer	HR	JST	Megastar	JST / Megastar — Original manufacturer of the XH series, implies high compatibility.; ZX-XH2.54-3PLT: Different manufacturer; quality and tolerances may vary.

Application & sourcing insights

Questions & answers

The JST S3B-XH-A(LF)(SN) is an excellent alternative, as it is the original part from the XH series originator. It offers the same form, fit, and electrical specifications, providing high confidence in compatibility.