Is there a pin-compatible replacement for WF-1A254A2P?

Yes, several parts are likely pin-compatible, including 3-644456-2 (TE) and RE-H022TD-1190(LF)(SN) (JST). However, you must always verify the mechanical drawings in the datasheets for pin length and housing dimensions to guarantee a perfect fit.

What risks should I check before replacing WF-1A254A2P?

Before replacing, check three things: 1) Mechanical Fit: Compare pin length, post size, and housing dimensions from the datasheets. 2) Electrical Ratings: Ensure the replacement's voltage and current ratings are equal to or greater than the original's 250V, 2A. 3) Mating Connector: Confirm the new header will still mate correctly with your existing female connector.

WF-1A254A2P Alternatives, Datasheet & Cross Reference | BXCONN

WF-1A254A2P is a standard 2-pin, 2.54mm pitch straight header from BXCONN. Several strong alternatives are available from major manufacturers like TE Connectivity and JST, often with upgraded current ratings.

AI replacement insight

Electrical risklow

Most alternatives have equal or better voltage/current ratings.

Package riskmedium

Pin length and housing dimensions must be verified from datasheets to ensure mechanical fit.

Sourcing risklow

This is a common connector type with many available manufacturers.

Can it be replaced directly?

Yes, several direct replacements for WF-1A254A2P exist. The part WF-1A254A2P-Y is a color variant. Parts like 3-644456-2 from TE Connectivity and RE-H022TD-1190(LF)(SN) from JST offer the same form factor with better electrical performance.

Best replacement path

The TE Connectivity part 3-644456-2 is the best upgrade path, offering a significantly higher current rating (5A vs 2A) from a major manufacturer. For a closer match, the JST part RE-H022TD-1190(LF)(SN) is also a strong choice.

Main risk

The primary risk is mechanical incompatibility. While pitch and pin count may match, differences in pin length, post size, or housing dimensions can prevent a proper fit on the PCB or with the mating connector.

Recommended alternatives

A strong alternative from TE Connectivity's MTA-100 series with a 5A current rating upgrade.

View details

Alternative comparison matrix

Feature / factor	WF-1A254A2P	3-644456-2	WF-1A254A2P-Y	RE-H022TD-1190(LF)(SN)	Compatibility / risk
Package	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole — Mounting type is straight, matching target.; WF-1A254A2P-Y: Mounting type is straight, matching target.; RE-H022TD-1190(LF)(SN): Mounting type is straight, matching target.
Pinout	2.54mm, 1x2	2.54mm, 1x2	2.54mm, 1x2	2.54mm, 1x2	2.54mm, 1x2 — Pitch, positions, and rows match.; WF-1A254A2P-Y: Pitch, positions, and rows match.; RE-H022TD-1190(LF)(SN): Pitch, positions, and rows match.
Current	2.0 A	5A	2A	3A	5A / 2A / 3A — Significantly higher current rating is a major upgrade.; WF-1A254A2P-Y: Current rating matches.; RE-H022TD-1190(LF)(SN): Higher current rating is a functional upgrade.
Voltage	250 V AC/DC	250V	250V	250V	250V — Voltage rating matches.; WF-1A254A2P-Y: Voltage rating matches.; RE-H022TD-1190(LF)(SN): Voltage rating matches.
Application	Unspecified	-	Yellow	-	Yellow — Candidate has a yellow housing, target is unspecified (likely natural/black).

Application & sourcing insights

Questions & answers

The best alternative is likely 3-644456-2 from TE Connectivity, as it offers a major upgrade in current rating (5A) while matching the form factor. For a similar-spec part, RE-H022TD-1190(LF)(SN) from JST is also an excellent choice.