ProjectsPricingInsights

Best Alternatives to B4B-EH-A(LF)(SN)

Package: Through HoleJSTInterconnectsNumber of Positions: 4Pitch: 2.5 mmMounting Type: Through Hole, Top EntryCurrent Rating: 3 AVoltage Rating: 250 V

B4B-EH-A(LF)(SN) has several 4-position 2.5mm header alternatives, but none is confirmed pin-compatible from the supplied evidence.

AI replacement insight

Electrical riskmedium

Most list 3A 250V; XHB-4A may be 50V.

Package riskhigh

Footprint and mating series are unverified.

Firmware risklow

Passive connector; no firmware.

Sourcing riskmedium

Several catalog options need FAE approval.

Can it be replaced directly?

No pin-compatible replacement is confirmed.

Best replacement path

Start with JST top-entry candidates, then verify footprint, mating housing, and height.

Main risk

EH vs XH/XA/XHB mechanical compatibility.

Recommended alternatives

5
B4B-XH-A(LF)(SN) package
B4B-XH-A(LF)(SN)

JST

Needs validationmedium risk

JST B4B-XH-A is a same-rating top-entry 4-position candidate needing mechanical review.

View details

Alternative comparison matrix

Feature / factorB4B-EH-A(LF)(SN)B4B-XH-A(LF)(SN)B04B-XASK-1-A(LF)(SN)HC-XH-4A-GCompatibility / risk
PackageTH top entryTH top entry--TH straight — orientation appears vertical
Pinout4 pos 2.5mm4 pos 2.5mm--4 pos 2.5mm — footprint not proven
Voltage250V250V--250V — rating aligns
Current3A3A--3A — rating aligns
ApplicationJST EHJST XH--JST XA — series differs

Application & sourcing insights

Questions & answers

B4B-XH-A(LF)(SN) is the strongest catalog candidate, but EH-to-XH fit must be verified.