Needs validationmedium risk
JST B4B-XH-A matches 4 positions and 2.5 mm pitch, but XA mating and 105°C use need review.
Best Alternatives to B04B-XASK-1(LF)(SN)
B04B-XASK-1(LF)(SN) is a JST XA 4-position 2.5 mm shrouded header. Listed alternatives need FAE review for mating and footprint fit.
AI replacement insight
Electrical riskmedium
Most kept parts are 3 A, 250 V.
Package riskhigh
Footprint and latch geometry are unverified.
Firmware risklow
Passive connector, no firmware.
Sourcing riskmedium
Several are non-XA families.
Can it be replaced directly?
No pin-compatible replacement is confirmed from the provided evidence.
Best replacement path
Start with B4B-XH-A only as a reviewed functional option; seek an XA-series exact match for direct replacement.
Main risk
XA shroud, lock, footprint, and 105°C rating are not proven on the candidates.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | B04B-XASK-1(LF)(SN) | B4B-XH-A(LF)(SN) | HC-XHB-4A | HC-XH-4A-G | Compatibility / risk |
|---|---|---|---|---|---|
| Package | Through Hole | Through Hole | - | - | Through Hole — same mount class |
| Pinout | 4 pos, 2.5 mm XA | 4 pos, 2.5 mm XH | - | - | 4 pos, 2.5 mm XH — series differs |
| Voltage | 250 V | 250 V | - | - | 250 V — ES field |
| Current | 3 A | 3 A | - | - | 3 A — ES field |
| Temperature | -25..105°C | -25..85°C | - | - | not listed — needs check |
Application & sourcing insights
Questions & answers
B4B-XH-A is the closest listed functional candidate, but it is not confirmed as an XA pin-compatible replacement.