XH-3PA
ZHOURI
Needs validationmedium risk
A 3-pin, 2.5mm pitch header with matching electrical ratings; mechanical fit with XA series mating parts must be verified.
Best Alternatives to B03B-XASK-1(LF)(SN)
The JST B03B-XASK-1(LF)(SN) is a 3-pin, 2.5mm pitch XA series header. While direct replacements are specific, many compatible XH series connectors exist that may serve as functional alternatives after mechanical verification.
AI replacement insight
Package riskmedium
JST XA and the common XH series have different shroud and locking features that may prevent proper mating.
Electrical risklow
Many candidates match the 3A/250V rating, but verification is still needed for parts with missing data.
Can it be replaced directly?
No guaranteed direct drop-in replacement is identified. Alternatives from the common XH series are available but require mechanical verification due to potential differences in the housing and locking mechanism compared to the target's XA series.
Best replacement path
Use a widely-sourced 3-pin, 2.5mm pitch XH series header, but verify mechanical drawings against the JST XA series datasheet before purchase.
Main risk
Mechanical incompatibility with the mating connector.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | B03B-XASK-1(LF)(SN) | XH-3PA | XH-D-3A | ZX-XH2.54-3PZZ-Y | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole — Mounting type matches.; XH-D-3A: Mounting type matches.; ZX-XH2.54-3PZZ-Y: Mounting type matches.; XH-3A-L: Mounting type matches. |
| Positions | 3 | 3 | 3 | 3 | 3 — Pin count matches.; XH-D-3A: Pin count matches.; ZX-XH2.54-3PZZ-Y: Pin count matches.; XH-3A-L: Pin count matches. |
| Pitch | 2.5mm | 2.5mm | 2.5mm | 2.5mm | 2.5mm — Pin pitch matches.; XH-D-3A: Pin pitch matches.; ZX-XH2.54-3PZZ-Y: Pin pitch matches.; XH-3A-L: Pin pitch matches. |
| Current | 3A | 3A | 3.0A | 3.0A | 3A / 3.0A — Current rating matches.; XH-D-3A: Current rating matches.; ZX-XH2.54-3PZZ-Y: Current rating matches.; XH-3A-L: Current rating matches. |
| Voltage | 250V | 250V | 250V | 250V | 250V — Voltage rating matches.; XH-D-3A: Voltage rating matches.; ZX-XH2.54-3PZZ-Y: Voltage rating matches.; XH-3A-L: Voltage rating matches. |
| Series | XA Series | XH Series | XH Series | XH Series | XH Series — Series mismatch requires mechanical verification.; XH-D-3A: Series mismatch requires mechanical verification.; ZX-XH2.54-3PZZ-Y: Series mismatch requires mechanical verification. |
| Temperature | -25°C to +85°C | - | - | - | Not specified — Temperature range must be verified from datasheet. |
Application & sourcing insights
Questions & answers
The best alternatives are 3-pin, 2.5mm pitch XH series headers like DEALON XH-D-3A or HCTL XH-3A-P, provided you verify their mechanical dimensions match your application's requirements for mating with the JST XA series.