Is there a pin-compatible replacement for MX128L-3.81-03P-GN01-Cu-Y-A?

No replacement is verified as 100% pin-compatible without engineering review. XY303V-3.81-3P is a form-fit-function candidate, meaning it has the same pitch and position count, but its exact mechanical drawings must be compared against the target part's footprint.

What risks should I check before replacing MX128L-3.81-03P-GN01-Cu-Y-A?

The primary risk is electrical: many potential alternatives have a lower current rating (e.g., 8A vs. 10A), which can cause overheating if your application draws more than 8A. The secondary risk is mechanical: ensure the replacement's orientation (vertical vs. right-angle) and dimensions match your PCB layout.

MX128L-3.81-03P-GN01-Cu-Y-A Alternatives, Datasheet & Cross Reference | Cybermax

Find functional and parametric alternatives for the MAX MX128L-3.81-03P-GN01-Cu-Y-A 3-position terminal block. Review key differences in current ratings and mechanical fit to ensure compatibility.

AI replacement insight

Electrical riskmedium

Many alternatives have a lower current rating (8A vs 10A), requiring application current verification.

Package riskmedium

Connector orientation (vertical vs. right-angle) and exact dimensions must be verified from datasheets to ensure PCB fit.

Can it be replaced directly?

There is no verified direct drop-in replacement. XY303V-3.81-3P is a strong functional alternative that requires engineering review of its datasheet.

Best replacement path

XY303V-3.81-3P offers the closest electrical match (10A current). Verify mechanical drawings before design-in.

Main risk

Using a substitute with a lower current rating (8A vs. the original 10A) could lead to overheating and failure.

Recommended alternatives

Strong functional alternative with matched current and higher voltage rating. Mechanical fit requires verification.

View details

Alternative comparison matrix

Feature / factor	MX128L-3.81-03P-GN01-Cu-Y-A	XY303V-3.81-3P	DB2EKM-3.81-3P-GN-S	WJ15EDGVM-3.81-03P-14-00A	Compatibility / risk
Package	Terminal Block	Terminal Block	Terminal Block	Terminal Block	Terminal Block — Form factor appears to be a vertical plug, matching the likely target type.; DB2EKM-3.81-3P-GN-S: Form factor is a vertical plug, likely matching target.; WJ15EDGVM-3.81-03P-14-00A: Form factor is a vertical plug, likely matching target.
Pitch	3.81 mm	3.81 mm	3.81 mm	3.81 mm	3.81 mm — Pitch is identical, critical for PCB compatibility.; DB2EKM-3.81-3P-GN-S: Pitch is identical.; WJ15EDGVM-3.81-03P-14-00A: Pitch is identical.
Voltage	150 V	300 V	300 V	300 V	300 V — Higher voltage rating provides more design margin.; DB2EKM-3.81-3P-GN-S: Higher voltage rating.; WJ15EDGVM-3.81-03P-14-00A: Higher voltage rating.
Current	10 A	10 A	8 A	8 A	10 A / 8 A — Current rating is identical.; DB2EKM-3.81-3P-GN-S: Lower current rating is a downgrade risk.; WJ15EDGVM-3.81-03P-14-00A: Lower current rating is a downgrade risk.
Wire Gauge	26-16 AWG	26-16 AWG	-	-	26-16 AWG — Wire gauge range is identical.

Application & sourcing insights

Questions & answers

XY303V-3.81-3P is a strong functional alternative. It matches the 3.81mm pitch, 3-position count, and 10A current rating, with a higher voltage rating of 300V. However, you must verify its mechanical dimensions from the datasheet.