Is there a pin-compatible replacement for HC-1.25-4Y?

While several parts like WF-1A125A4P match key specs (4-pin, 1.25mm pitch, straight THT), a true pin-to-pin replacement requires comparing the detailed mechanical drawings from the datasheets to confirm footprint and housing dimensions.

What risks should I check before replacing HC-1.25-4Y?

First, verify the PCB footprint and mechanical dimensions (housing height, pin length) from the datasheet. Second, ensure the candidate's voltage and current ratings (e.g., 125V, 1A) are equal to or greater than the original part's.

HC-1.25-4Y Alternatives, Datasheet & Cross Reference | HCTL

HC-1.25-4Y is a 4-pin, 1.25mm pitch straight through-hole header rated for 1A and 125V. Alternatives must match these mechanical and electrical specifications for a reliable replacement.

AI replacement insight

Package riskmedium

Footprint and housing dimensions must be verified from datasheets.

Electrical risklow

Strong candidates meet or exceed electrical ratings. Avoid parts with lower voltage.

Can it be replaced directly?

No direct pin-to-pin replacement has been verified. However, WF-1A125A4P and 1.25T-4A米色 are strong candidates that match the through-hole, straight orientation, pitch, and pin count. Footprint verification is required.

Best replacement path

BOOMELE 1.25T-4A米色 offers upgraded voltage and current ratings. For a direct parametric match, consider BXCONN WF-1A125A4P.

Main risk

The primary risk is mechanical incompatibility. While pitch and pin count match, subtle differences in housing dimensions or pin length can prevent a proper fit.

Recommended alternatives

A strong alternative matching pitch, pin count, mounting style, and key electrical ratings.

View details

Alternative comparison matrix

Feature / factor	HC-1.25-4Y	WF-1A125A4P	1.25T-4A米色	ZX-MX1.25-4PJK	Compatibility / risk
Pitch	1.25mm	1.25mm	1.25mm	1.25mm	1.25mm — Pitch matches.; 1.25T-4A米色: Pitch matches.; ZX-MX1.25-4PJK: Pitch matches.
Pin Count	4	4	4	4	4 — Pin count matches.; 1.25T-4A米色: Pin count matches.; ZX-MX1.25-4PJK: Pin count matches.
Package	Through-Hole, Straight	Through Hole, Straight	Through Hole, Straight	Through-Hole, Straight	Through Hole, Straight / Through-Hole, Straight — Mounting type and orientation match.; 1.25T-4A米色: Mounting type and orientation match.; ZX-MX1.25-4PJK: Mounting type and orientation match.
Voltage	125V AC/DC	125V AC/DC	250V AC/DC	50V	125V AC/DC / 250V AC/DC — Voltage rating matches.; 1.25T-4A米色: Candidate voltage is higher.; ZX-MX1.25-4PJK: Candidate voltage is a significant downgrade.
Current	1A	1A	3.0A	1.0A	1A / 3.0A / 1.0A — Current rating matches.; 1.25T-4A米色: Candidate current is higher.; ZX-MX1.25-4PJK: Current rating matches.

Application & sourcing insights

Questions & answers

BOOMELE's 1.25T-4A米色 is a strong candidate with higher voltage (250V) and current (3A) ratings. For a closer parametric match, consider BXCONN's WF-1A125A4P, which has identical ratings.