Is there a pin-compatible replacement for MTP125-1104S1?

TE Connectivity's 640454-4 is likely pin-compatible in form and fit, but its lower voltage rating (250V vs 500V) means it is not a direct electrical drop-in. Full engineering validation is required.

What risks should I check before replacing MTP125-1104S1?

The main risks are electrical. Verify the candidate's voltage rating (target is 500V), current rating (target is 3A), and operating temperature range. Also confirm mechanical dimensions and pin plating are compatible.

MTP125-1104S1 Alternatives, Datasheet & Cross Reference | MINTRON

Finding a substitute for the MINTRON MTP125-1104S1 4-pin header involves matching the 2.54mm pitch and straight, single-row layout. Key electrical ratings like the 3A current and 500V voltage must be carefully verified in alternatives.

AI replacement insight

Electrical riskhigh

Most alternatives have lower voltage and/or current ratings.

Package risklow

The 1x4 2.54mm header is a common form factor.

Can it be replaced directly?

No direct, fully-equivalent replacement was found. All viable candidates have at least one significant electrical difference, primarily a lower voltage rating.

Best replacement path

Use TE Connectivity 640454-4 if the application voltage is safely below 250V.

Main risk

The primary risk is a lower voltage rating in most available alternatives, which may not be suitable for the original design's requirements.

Recommended alternatives

A 4-pin header from TE Connectivity with matching form factor but a lower voltage rating (250V).

View details

Alternative comparison matrix

Feature / factor	MTP125-1104S1	640454-4	WF-1A254A4P-Y	Compatibility / risk
Voltage	500V AC/DC	250V AC	250V AC/DC	250V AC / 250V AC/DC — Candidate voltage is significantly lower.; WF-1A254A4P-Y: Candidate voltage rating is lower.
Current	3.0A	5A	2A AC/DC	5A / 2A AC/DC — Based on datasheet review.; WF-1A254A4P-Y: Candidate current rating is lower.
Temperature	-40°C to +105°C	-55°C to +105°C	-25°C to +85°C	-55°C to +105°C / -25°C to +85°C — Based on datasheet review.; WF-1A254A4P-Y: Narrower range, based on datasheet.
Package	Through Hole, 1x4, 2.54mm pitch	Through Hole, 1x4, 2.54mm pitch	Through Hole, 1x4, 2.54mm pitch	Through Hole, 1x4, 2.54mm pitch — Form factor appears compatible.; WF-1A254A4P-Y: Form factor appears compatible.

Application & sourcing insights

Questions & answers

TE Connectivity's 640454-4 is a strong candidate with a matching form factor and superior current/temperature ratings, but has a lower voltage rating of 250V that must be acceptable for your application.