Is there a pin-compatible replacement for A2543WV-4P?

Yes, parts like ZX-XH2.54-4PZZ-R and the BXCONN WF-1A254A4P series share the same 4-pin, 2.54mm pitch, and straight through-hole mounting. While physically compatible, they have lower current ratings and are not direct drop-in replacements without electrical validation.

What risks should I check before replacing A2543WV-4P?

The primary risk is the lower current rating of available alternatives (2A-3A vs. the original 4A), which could lead to overheating or failure. Also, verify the housing material, temperature range, and intermateability with your existing female connector.

A2543WV-4P Alternatives, Datasheet & Cross Reference | CJT

A2543WV-4P is a 4-pin, 2.54mm pitch straight through-hole header from CJT, rated for 4A. While several alternatives match its physical form factor, they have lower current ratings that require careful engineering review before substitution.

AI replacement insight

Electrical riskhigh

All candidates have lower current ratings (2A-3A vs 4A).

Package risklow

Several candidates match the straight through-hole package, pin count, and pitch.

Can it be replaced directly?

No direct, 1-to-1 replacement with a 4A current rating was found. All form-factor compatible options are downgrades in current handling.

Best replacement path

Use a parametric alternative with a lower current rating, like ZX-XH2.54-4PZZ-R (3A), and validate thermal performance in-circuit.

Main risk

Lower current rating on all candidates may cause overheating or failure under full load.

Recommended alternatives

Matches form and fit but has a lower current rating of 3A. Requires engineering review.

View details

Alternative comparison matrix

Feature / factor	A2543WV-4P	ZX-XH2.54-4PZZ-R	WF-1A254A4P	Compatibility / risk
Current	4 A	3.0 A	2.0 A	3.0 A / 2.0 A — Candidate current rating is lower.; WF-1A254A4P: Candidate current rating is significantly lower.
Package	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight	Through Hole, Straight — Mounting type and orientation match.; WF-1A254A4P: Mounting type and orientation match.
Pinout	4	4	4	4 — Pin count and pitch match.; WF-1A254A4P: Pin count and pitch match.
Voltage	250 V	250 V	250 V	250 V — Voltage rating matches.; WF-1A254A4P: Voltage rating matches.

Application & sourcing insights

Questions & answers

Several alternatives match the 4-pin, 2.54mm pitch straight header format, such as Megastar's ZX-XH2.54-4PZZ-R. However, all identified candidates have a lower current rating (2A-3A) than the original's 4A, which must be verified for your application.