Is there a pin-compatible replacement for A1251WR-S-8P-LCP?

No replacement is verified as 100% pin-compatible without comparing the mechanical drawings. ZX-MX1.25-8PWT is a strong form, fit, and function candidate that is likely pin-compatible, but requires engineering verification.

What risks should I check before replacing A1251WR-S-8P-LCP?

The main risk is mechanical mismatch. Before replacing, you must compare the candidate's datasheet drawing to your PCB layout, checking pin-to-pad alignment and the location of any plastic posts or metal mounting tabs.

A1251WR-S-8P-LCP Alternatives, Datasheet & Cross Reference | CJT

A1251WR-S-8P-LCP is an 8-pin, 1.25mm pitch, right-angle SMT header from CJT used for board-to-wire connections. Finding a substitute requires matching these mechanical specifications and verifying the PCB footprint.

AI replacement insight

Package riskmedium

While pitch and mounting type match, the exact footprint dimensions must be verified from datasheets to ensure PCB compatibility.

Electrical risklow

Top candidates match or exceed the target's voltage and current ratings, but missing specs on some parts require review.

Sourcing risklow

Multiple manufacturers produce similar 1.25mm pitch connectors, offering several sourcing options.

Can it be replaced directly?

There are no verified direct drop-in replacements for A1251WR-S-8P-LCP. Strong candidates like ZX-MX1.25-8PWT exist but require mechanical verification by an engineer.

Best replacement path

ZX-MX1.25-8PWT from Megastar is the most promising alternative, matching all key specifications. However, PCB footprint verification is mandatory.

Main risk

The primary risk is mechanical incompatibility. The substitute's PCB footprint, including pin and mounting tab locations, may differ from the target.

Recommended alternatives

Strong form, fit, and function match. Verify PCB layout for pin-to-pin compatibility.

View details

Alternative comparison matrix

Feature / factor	A1251WR-S-8P-LCP	ZX-MX1.25-8PWT	MXMS-1.25-08P-WT1-0-A	Compatibility / risk
Pin Count	8	8	8	8 — Pin count matches.; MXMS-1.25-08P-WT1-0-A: Pin count matches.
Pitch	1.25mm	1.25mm	1.25mm	1.25mm — Pitch matches.; MXMS-1.25-08P-WT1-0-A: Pitch matches.
Package	SMT, Right Angle	SMT, Right Angle	SMT, Right Angle	SMT, Right Angle — Mounting type and orientation match.; MXMS-1.25-08P-WT1-0-A: Mounting type and orientation match.
Current	1A	1.0A	Not specified	1.0A / Not specified — Current rating matches.; MXMS-1.25-08P-WT1-0-A: Current rating is missing and must be verified from datasheet.
Voltage	125V	125V	200V	125V / 200V — Voltage rating matches.; MXMS-1.25-08P-WT1-0-A: Higher voltage rating is acceptable.

Application & sourcing insights

Questions & answers

The best alternative appears to be ZX-MX1.25-8PWT. It matches the target's pin count, pitch, SMT right-angle form factor, and electrical ratings. However, you must verify the PCB footprint from its datasheet.