Is there a pin-compatible replacement for MF3WS-1KΩ±1%T?

Yes, MF3WS-1KΩ±1% T from CCO is a strong candidate for a pin-compatible replacement. It shares the same axial package and 2-pin layout. However, you should always verify the mechanical dimensions from the datasheet to ensure a perfect fit on your PCB.

What risks should I check before replacing MF3WS-1KΩ±1%T?

Key risks include: 1) Tolerance: Some alternatives have a wider ±5% tolerance, which may not be suitable for your circuit. 2) Technology: Alternatives may be wirewound, which adds inductance and is not ideal for high-frequency applications. 3) Package: Ensure the physical dimensions of the replacement match the original.

MF3WS-1KΩ±1%T Alternatives, Datasheet & Cross Reference | Ningbo Songle Relay Co., Ltd.

Find and compare verified alternatives for the MF3WS-1KΩ±1%T, a 3W, 1kΩ, ±1% axial metal film resistor. This guide provides pin-compatible options, functional alternates, and parametric comparisons to help you make a reliable substitution.

AI replacement insight

Electrical risklow

For the top candidate, electrical risk is low as specs match or exceed the target. For others, tolerance and technology differences increase risk.

Package risklow

Most candidates are axial and likely compatible, but one has a completely different cement package. Always verify dimensions.

Sourcing riskhigh

The target part is from a lesser-known manufacturer; alternatives from major brands like CCO, Vishay, or TE offer more reliable supply chains.

Can it be replaced directly?

Yes, MF3WS-1KΩ±1% T from CCO is a strong candidate for a direct replacement. It matches the resistance, power, tolerance, and package, while providing better temperature stability.

Best replacement path

The CCO MF3WS-1KΩ±1% T is the strongest alternative, matching all key specs and offering a better TCR. It is considered a potential pin-to-pin replacement pending mechanical verification.

Main risk

The primary risk when substituting is accepting a part with a wider tolerance (e.g., ±5%) or a different technology (e.g., wirewound), which can impact circuit performance.

Recommended alternatives

Strong match with identical key parameters and improved temperature coefficient; verify mechanical fit.

View details

Alternative comparison matrix

Feature / factor	MF3WS-1KΩ±1%T	MF3WS-1KΩ±1% T	MOF3WS-1KΩ±5%T	Compatibility / risk
Resistance	1kΩ	1kΩ	-	1kΩ — Exact match.
Power	3W	3W	3W	3W — Exact match.; MOF3WS-1KΩ±5%T: Exact match.
Tolerance	±1%	±1%	±5%	±1% / ±5% — Exact match.; MOF3WS-1KΩ±5%T: Wider tolerance may not be suitable for precision circuits.
Tcr	±200 PPM/°C	±100 ppm/°C	-	±100 ppm/°C — Candidate has better temperature stability.
Package	Axial	Axial	Axial	Axial — Same package type, verify dimensions.; MOF3WS-1KΩ±5%T: Same package type.
Technology	Metal Film	-	Metal Oxide Film	Metal Oxide Film — Different resistor technology may affect noise and stability.

Application & sourcing insights

Questions & answers

The best alternative is MF3WS-1KΩ±1% T from manufacturer CCO. It matches all critical parameters (1kΩ, 3W, ±1%, Axial) and has a better temperature coefficient (TCR), making it a potential upgrade.