Is there a pin-compatible replacement for 1.25-4PWTDK?

No direct pin-compatible replacement has been identified. All reviewed candidates have a different mounting type or orientation (vertical vs. right-angle), which changes the PCB footprint and makes them not drop-in compatible.

What risks should I check before replacing 1.25-4PWTDK?

The main risks are mechanical. Verify the mounting type (SMT vs. through-hole) and orientation (right-angle vs. vertical), as this will likely require a PCB redesign. Also confirm electrical ratings meet your design's needs.

1.25-4PWTDK Alternatives, Datasheet & Cross Reference | SHOU HAN

The SHOU HAN 1.25-4PWTDK is a 4-pin, 1.25mm pitch, right-angle SMT header. Finding a direct replacement requires matching the specific SMT footprint and right-angle orientation, which are critical for PCB compatibility.

AI replacement insight

Package riskhigh

Target is right-angle SMT; most alternatives are vertical or through-hole, requiring layout changes.

Electrical risklow

Alternatives with matching electrical ratings are available, but form factor is the issue.

Can it be replaced directly?

No direct, drop-in replacement was found. The key challenge is matching the right-angle SMT form factor.

Best replacement path

Use a functional alternative like 1.25-4PLTDK and adapt the PCB layout for a vertical SMT header.

Main risk

Mechanical incompatibility due to different mounting orientation (vertical vs. right-angle).

Recommended alternatives

Functional alternative from the same manufacturer with matching electricals but different (vertical) orientation.

View details

Alternative comparison matrix

Feature / factor	1.25-4PWTDK	1.25-4PLTDK	HCZZ0494-4	Compatibility / risk
Package	SMT, Right Angle	SMT, Vertical	SMT, Vertical	SMT, Vertical — Candidate is vertical mount, target is right-angle. Footprint is different.; HCZZ0494-4: Candidate is vertical mount, target is right-angle. Footprint is different.
Voltage	125 V	125 V	50 V	125 V / 50 V — Voltage rating matches.; HCZZ0494-4: Voltage rating is a significant downgrade.
Current	1 A	1 A	1.0 A	1 A / 1.0 A — Current rating matches.; HCZZ0494-4: Current rating matches.
Temperature	-25°C to +85°C	-25°C to +85°C	-	-25°C to +85°C — Operating temperature range matches.

Application & sourcing insights

Questions & answers

The SHOU HAN 1.25-4PLTDK is a strong functional alternative from the same manufacturer with matching electrical ratings, but it has a vertical orientation instead of right-angle, requiring a PCB layout change.