Is there a pin-compatible replacement for A1251WR-S-6P?

Several parts like A1254WR-S-6P and ZX-GH1.25-WT6 share the same pitch, pin count, and orientation, making them likely form-fit compatible. However, true pin-to-pin compatibility requires verifying the PCB layout against the candidate's datasheet, as mechanical dimensions can vary.

What risks should I check before replacing A1251WR-S-6P?

Key risks include mechanical footprint mismatch, which requires PCB layout verification. Check for electrical downgrades, such as lower voltage ratings (e.g., 50V vs. 125V). Also, consider differences in contact material (e.g., brass vs. phosphor bronze), which can affect mechanical durability and mating cycles.

A1251WR-S-6P Alternatives, Datasheet & Cross Reference | CJT

A1251WR-S-6P is a 6-pin, 1.25mm pitch, right-angle SMT header from CJT. Alternatives exist with similar form factors, but require careful verification of PCB footprint, electrical ratings, and contact materials before substitution.

AI replacement insight

Package riskhigh

Footprint must be verified against datasheet. Solder tabs and body dimensions can vary.

Electrical riskmedium

Some alternatives have lower voltage ratings. Always verify against application requirements.

Sourcing risklow

This is a common connector type with multiple manufacturers available.

Can it be replaced directly?

No verified direct drop-in replacement has been confirmed. However, several parts are strong functional alternatives that require engineering review, primarily to confirm the PCB footprint.

Best replacement path

A1254WR-S-6P from CJT or ZX-GH1.25-WT6 from Megastar are the strongest candidates, but require PCB footprint verification before commitment.

Main risk

The primary risk is mechanical incompatibility due to variations in connector body dimensions and PCB solder pad layouts, even when pitch and pin count match.

Recommended alternatives

Strong alternative from the same manufacturer with matching specs; contact material differs.

View details

Alternative comparison matrix

Feature / factor	A1251WR-S-6P	A1254WR-S-6P	ZX-GH1.25-WT6	GH1.25-6PWBPZ	Compatibility / risk
Pin Count	6	6	6	-	6 — Pin count matches.; ZX-GH1.25-WT6: Pin count matches.
Pitch	1.25mm	1.25mm	1.25mm	-	1.25mm — Pitch matches.; ZX-GH1.25-WT6: Pitch matches.
Package	SMT, Right Angle	SMT, Right Angle	SMT, Right Angle	SMT, Right Angle	SMT, Right Angle — Mounting type and orientation match, but footprint requires verification.; ZX-GH1.25-WT6: Mounting type and orientation match, but footprint requires verification.; GH1.25-6PWBPZ: Mounting type and orientation match, but footprint requires verification.
Voltage	125V	125V	125V AC/DC	50V AC/DC	125V / 125V AC/DC / 50V AC/DC — Voltage rating matches.; ZX-GH1.25-WT6: Voltage rating matches.; GH1.25-6PWBPZ: Voltage rating is a significant downgrade and poses a risk.
Material	Phosphor Bronze	Brass	-	-	Brass — Candidate uses brass contacts, target uses phosphor bronze. May affect durability.
Current	1A	-	1.0A	1A	1.0A / 1A — Current rating matches.; GH1.25-6PWBPZ: Current rating matches.

Application & sourcing insights

Questions & answers

A1254WR-S-6P from the same manufacturer, CJT, is a strong candidate, matching key electrical and mechanical specs but using brass contacts instead of phosphor bronze. ZX-GH1.25-WT6 from Megastar is also a strong functional match. Footprint verification is required for all alternatives.