Is there a pin-compatible replacement for MFR01SF1000A10?

Yes, several axial resistors like the MF2WS and MF3WS series are pin-compatible. However, their electrical parameters like TCR differ, so they are not drop-in replacements for all circuits. Review is required.

What risks should I check before replacing MFR01SF1000A10?

Key risks include: 1) Temperature Coefficient (TCR), as many alternatives have worse stability. 2) Power derating curves, especially if operating at high temperatures. 3) Physical size, even within the same 'Axial' package type.

MFR01SF1000A10 Alternatives, Datasheet & Cross Reference | UNI-ROYAL

MFR01SF1000A10 is a 100Ω, 1W, 1% tolerance metal film resistor in an axial package. This page reviews potential alternatives, focusing on power rating, tolerance, and temperature coefficient (TCR) to ensure a reliable substitution.

AI replacement insight

Electrical riskmedium

All candidates have a worse Temperature Coefficient (TCR), which can affect precision circuits.

Package risklow

Most candidates share the same Axial package, but physical dimensions should still be double-checked.

Sourcing risklow

The alternatives are common, widely available resistor types.

Can it be replaced directly?

No direct drop-in replacement with identical or better specifications was found. All reviewed candidates require engineering review, primarily for their weaker Temperature Coefficient (TCR).

Best replacement path

Upgrade power with MF2WS/MF3WS series, but verify the impact of the weaker Temperature Coefficient (TCR) on your circuit's performance.

Main risk

The primary risk is degraded circuit performance due to the worse temperature stability (higher TCR) of all potential alternatives.

Recommended alternatives

A 2W power upgrade with matching resistance and tolerance, but a weaker TCR requires application review.

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Alternative comparison matrix

Feature / factor	MFR01SF1000A10	MF2WS-100Ω±1% T	MF3WS-100Ω±1%T	Compatibility / risk
Power	1 W	2 W	3 W	2 W / 3 W — Candidate has 2x power rating.; MF3WS-100Ω±1%T: Candidate has 3x power rating.
Tcr	±50 PPM/°C	±100 PPM/°C	±100/±200 PPM/°C	±100 PPM/°C / ±100/±200 PPM/°C — Worse temperature stability.; MF3WS-100Ω±1%T: Worse temperature stability.
Package	Axial	Axial	Axial	Axial — matched; MF3WS-100Ω±1%T: matched
Tolerance	±1%	±1%	±1%	±1% — matched; MF3WS-100Ω±1%T: matched
Resistance	100 Ω	-	100 Ω	100 Ω — matched

Application & sourcing insights

Questions & answers

The best alternative depends on your application's priority. For higher power, MF2WS and MF3WS series are good options, but they have a worse TCR. Always verify TCR and physical dimensions before replacing.