XHB-2A-R
HCTL
Needs validationmedium risk
Functional alternate with matching orientation but different mounting (THT vs SMT).
Best Alternatives to ZX-HA2.54-2PWT
Find and compare alternatives for the Megastar ZX-HA2.54-2PWT, a 2-pin, 2.5mm pitch, right-angle SMT header. Analysis shows that while many XH-series connectors are electrically similar, most are through-hole and require careful review of mechanical fit.
AI replacement insight
Package riskhigh
Target is SMT, all candidates are THT. This requires a PCB redesign and is not a drop-in replacement.
Electrical risklow
Key electrical ratings like voltage and current are identical across all candidates.
Can it be replaced directly?
No, a direct, drop-in replacement for ZX-HA2.54-2PWT was not found among the candidates. All suggested alternatives have a different mounting type (Through-Hole vs. Surface Mount).
Best replacement path
Search for alternative 2-position, 2.5mm pitch, right-angle SMT headers from other manufacturers.
Main risk
The primary risk is the package mismatch. Using any of the proposed alternatives requires a complete redesign of the printed circuit board (PCB) layout.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | ZX-HA2.54-2PWT | XHB-2A-R | XH-D-2A | XHB-2A-B | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Surface Mount, Right Angle | Through Hole, Right Angle | Through Hole, Straight | Through Hole, Straight | Through Hole, Right Angle / Through Hole, Straight — Candidate is Through-Hole, Target is SMT. Requires PCB redesign.; XH-D-2A: Candidate is Through-Hole Straight, Target is SMT Right-Angle. Requires PCB redesign.; XHB-2A-B: Candidate is Through-Hole Straight, Target is SMT Right-Angle. Requires PCB redesign.; XHB-2A-L: Candidate is Through-Hole Straight, Target is SMT Right-Angle. Requires PCB redesign. |
| Pin Count | 2 | 2 | 2 | 2 | 2 — Pin count matches.; XH-D-2A: Pin count matches.; XHB-2A-B: Pin count matches.; XHB-2A-L: Pin count matches. |
| Pitch | 2.5mm | 2.5mm | 2.5mm | 2.5mm | 2.5mm — Pitch matches.; XH-D-2A: Pitch matches.; XHB-2A-B: Pitch matches.; XHB-2A-L: Pitch matches. |
| Voltage Current | 250V / 3A | 250V / 3A | 250V / 3A | 250V / 3A | 250V / 3A — Electrical ratings match.; XH-D-2A: Electrical ratings match.; XHB-2A-B: Electrical ratings match.; XHB-2A-L: Electrical ratings match. |
Application & sourcing insights
Questions & answers
No direct drop-in replacement was found. The best path is to search for other 2-position, 2.5mm pitch, right-angle SMT headers. While not a direct fit, HCTL's XHB-2A-R is functionally similar and has the same right-angle orientation, but it is a through-hole part requiring a PCB change.