Is there a pin-compatible replacement for A1251WV-S-5P?

XD-1.25-5PLT is a strong candidate for being pin-compatible, as it matches the orientation, mounting, and pitch. A full pin-to-pin confirmation requires comparing the mechanical drawings in both datasheets to ensure the PCB land pattern is identical.

What risks should I check before replacing A1251WV-S-5P?

Before replacing A1251WV-S-5P, you must check three main risks: 1) Mechanical Fit: Ensure the substitute has a vertical orientation and SMT mounting, not right-angle or through-hole. 2) PCB Footprint: Verify the land pattern dimensions are identical. 3) Electrical Ratings: Confirm the voltage and current ratings are equal to or greater than 125V and 1A, respectively.

A1251WV-S-5P Alternatives, Datasheet & Cross Reference | CJT

Find alternatives for the A1251WV-S-5P, a 5-pin, 1.25mm pitch vertical SMT header from CJT. This analysis identifies compatible connectors and highlights key mechanical and electrical parameters to verify for a successful replacement.

AI replacement insight

Package riskmedium

While several parts match pitch and pin count, subtle differences in footprint or housing dimensions are common and must be verified.

Electrical risklow

Voltage (125V) and current (1A) ratings are standard for this connector type, but parametric downgrades exist (e.g., HCZZ0494-5 at 50V).

Can it be replaced directly?

No drop-in, verified replacement has been identified. XD-1.25-5PLT is a strong candidate for a form, fit, and function replacement, but requires engineering verification of the PCB layout.

Best replacement path

XD-1.25-5PLT is the most promising alternative, matching all key electrical and mechanical parameters. However, its PCB footprint must be verified against the target's datasheet before design-in.

Main risk

The primary risk is mechanical incompatibility. Several candidates were rejected for incorrect orientation (right-angle vs. vertical) or mounting type (through-hole vs. SMT).

Recommended alternatives

A strong functional alternative with matching key electrical and mechanical specifications; requires footprint verification.

View details

Alternative comparison matrix

Feature / factor	A1251WV-S-5P	XD-1.25-5PLT	HCZZ0494-5	Compatibility / risk
Pinout	5	5	5	5 — Pin count matches.; HCZZ0494-5: Pin count matches.
Package	SMT, Vertical	SMT, Vertical	SMT, Vertical	SMT, Vertical — Mounting type and orientation appear to match based on summary.; HCZZ0494-5: Mounting type and orientation appear to match.
Voltage	125V	125V	50V AC	125V / 50V AC — Voltage rating matches.; HCZZ0494-5: Voltage rating is significantly lower.
Current	1A	1A	1.0A	1A / 1.0A — Current rating matches.; HCZZ0494-5: Current rating matches.

Application & sourcing insights

Questions & answers

The best alternative found is XD-1.25-5PLT by XUNDA. It matches the target's pin count, 1.25mm pitch, vertical SMT mounting, and 125V/1A electrical ratings. However, you must verify the PCB footprint from its datasheet.