Needs validationmedium risk
A JST original XH series part with matching specs but requires a through-hole layout.
Best Alternatives to ZX-XH2.54-2PWT
ZX-XH2.54-2PWT is a 2-pin, 2.5mm pitch, right-angle SMT header in the popular XH series. While many functional alternatives exist, finding a drop-in replacement requires careful verification of the mounting type and PCB footprint.
AI replacement insight
Package riskhigh
Most alternatives have a different mounting style (TH vs SMT) or orientation, requiring PCB redesign. Footprint must be verified even for SMT parts.
Electrical risklow
Most candidates match the 3A/250V rating of the XH series.
Can it be replaced directly?
Direct replacement for ZX-XH2.54-2PWT should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
HCZZ0021-2 is the most promising alternative as it matches the SMT mounting, right-angle orientation, and key electrical specs. However, its PCB footprint must be verified against the target's datasheet.
Main risk
The primary risk is the physical package and PCB footprint. Most alternatives use a different mounting style (Through-Hole vs. SMT), which requires a board redesign.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | ZX-XH2.54-2PWT | HCZZ0021-2 | S2B-XH-A(LF)(SN) | HC-XH-2A-G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 2-pin SMT Header | Surface Mount (SMT) | Through Hole, Right Angle | Through Hole | Surface Mount (SMT) / Through Hole, Right Angle — Matches SMT, right-angle form factor.; S2B-XH-A(LF)(SN): Target is Surface Mount (SMT). Requires PCB redesign.; HC-XH-2A-G: Target is Surface Mount (SMT). Requires PCB redesign.; HC-XHB-2A: Target is Surface Mount (SMT). Requires PCB redesign. |
| Pitch | 2.5mm | 2.5mm | - | - | 2.5mm — matched |
| Electrical | 3A / 250V | 3.0A / 250V | 3A / 250V | 3A / 250V | 3.0A / 250V / 3A / 250V — matched; S2B-XH-A(LF)(SN): matched; HC-XH-2A-G: matched; HC-XHB-2A: matched |
| Pinout | Verified | Not verified | - | - | Not verified — PCB footprint must be verified from datasheet. |
| Manufacturer | Megastar | - | JST | - | JST — Original designer of the XH series. |
| Lifecycle | - | - | Active | Active | Active — stronger; HC-XH-2A-G: stronger; HC-XHB-2A: stronger |
| Orientation | Right-Angle | - | - | Straight | Straight — Target is right-angle. Affects board layout and cable exit.; HC-XHB-2A: Target is right-angle. Affects board layout and cable exit. |
Application & sourcing insights
Questions & answers
Verified drop-in options for ZX-XH2.54-2PWT are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.