Is there a pin-compatible replacement for B4P-SHF-1AA(LF)(SN)?

Several connectors share the same 4-pin, 2.5mm pitch straight configuration, making them likely pin-compatible. A full datasheet review of the candidate's mechanical drawing is required to confirm an exact drop-in replacement.

What risks should I check before replacing B4P-SHF-1AA(LF)(SN)?

The main risks are mechanical incompatibility and electrical rating mismatches. Always verify the candidate's datasheet for exact footprint dimensions, pin length, and shroud size. Also confirm that the voltage and current ratings meet or exceed the original part's 250V, 3A specification.

B4P-SHF-1AA(LF)(SN) Alternatives, Datasheet & Cross Reference | JST

B4P-SHF-1AA(LF)(SN) is a 4-pin, 2.5mm pitch straight through-hole header from JST. Alternatives from other manufacturers in the XH series are available but require datasheet verification for mechanical fit and electrical ratings.

AI replacement insight

Package riskmedium

While pitch and pin count match, shroud dimensions and PCB footprint can vary slightly.

Electrical risklow

For candidates with specified ratings, they generally match the target's 3A/250V.

Sourcing risklow

The XH 2.5mm connector family is a multi-sourced industry standard.

Can it be replaced directly?

No drop-in replacement is verified. Candidates like ZX-XH2.54-4PZZ-Y and XH-4PS are strong matches but require mechanical verification.

Best replacement path

Cross-reference to other XH-style 2.5mm 4-pin straight headers.

Main risk

Mechanical footprint and shroud dimension differences between manufacturers.

Recommended alternatives

A strong functional alternative with matching pitch, pin count, and electrical ratings; requires mechanical verification.

View details

Alternative comparison matrix

Feature / factor	B4P-SHF-1AA(LF)(SN)	XH-4PS	ZX-XH2.54-4PZZ-Y	Compatibility / risk
Package	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight — Mounting orientation matches target.; ZX-XH2.54-4PZZ-Y: Mounting orientation matches target.
Pitch	2.5mm	2.5mm	2.5mm	2.5mm — Matches standard XH series pitch.; ZX-XH2.54-4PZZ-Y: Matches standard XH series pitch.
Current	3A	3A	3A	3A — Current rating matches.; ZX-XH2.54-4PZZ-Y: Current rating matches.
Voltage	250V	250V	250V	250V — Voltage rating matches.; ZX-XH2.54-4PZZ-Y: Voltage rating matches.
Temperature	-25°C to +85°C	-25°C to +85°C	-25°C to +85°C	-25°C to +85°C — Operating range matches.; ZX-XH2.54-4PZZ-Y: Operating range matches.

Application & sourcing insights

Questions & answers

Parts like Megastar ZX-XH2.54-4PZZ-Y or DEALON XH-4PS are strong functional alternatives with matching pitch, pin count, and electrical ratings. However, verifying mechanical drawings for pin-to-pin compatibility is essential.