HC-XHB-4A
HCTL
Needs validationlow risk
A 4-pin, 2.5mm pitch straight header with matching electrical ratings. A likely form-fit-function replacement.
Best Alternatives to XH-4A
XH-4A is a standard 4-pin, 2.5mm pitch straight through-hole header used in wire-to-board applications. Finding a suitable replacement involves matching the orientation and electrical ratings, with strong candidates available from other manufacturers.
AI replacement insight
Package riskmedium
Many parts have the same pitch but different orientation (straight vs. right-angle) or shrouding. Datasheet verification is critical.
Electrical risklow
Most XH-style connectors in this class have similar 3A/250V ratings, but some low-cost versions may have lower voltage ratings.
Can it be replaced directly?
Direct replacement for XH-4A should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The HCTL HC-XHB-4A is the most promising alternative, matching all key electrical and mechanical parameters. However, a full datasheet comparison of mechanical drawings is required to confirm it is a true pin-for-pin replacement.
Main risk
The primary risk is mechanical incompatibility. Many similar parts exist with a right-angle orientation, which will not fit on a PCB designed for a straight header.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | XH-4A | HC-XHB-4A | ZX-XH2.54-4PLT | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Pinout | 4 | 4 | - | 4 — Pin count matches. | |
| Pitch | 2.5mm | 2.5mm | - | 2.5mm — Pitch matches. | |
| Package | Through Hole, Straight | Through Hole, Straight | Through Hole, Right Angle | Through Hole, Straight / Through Hole, Right Angle — Mounting type and orientation appear to match.; ZX-XH2.54-4PLT: Orientation is right-angle, target is straight. | |
| Voltage | 250V | 250V | 250V | 250V — Voltage rating matches.; ZX-XH2.54-4PLT: Voltage rating matches. | |
| Current | 3A | 3A | 3A | 3A — Current rating matches.; ZX-XH2.54-4PLT: Current rating matches. |
Application & sourcing insights
Questions & answers
Verified drop-in options for XH-4A 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.