Is there a pin-compatible replacement for 14D681K?

Yes, other 14mm radial disc MOVs can be pin-compatible. However, electrical parameters like varistor voltage must be carefully matched. For example, 14D561K has the same package but a lower voltage of 560V.

What risks should I check before replacing 14D681K?

Key risks include mismatched varistor voltage, which affects the clamping level, and lower peak surge current or energy ratings, which can lead to premature failure. Always verify package dimensions and lead spacing.

14D681K Alternatives, Datasheet & Cross Reference | RUILON

The 14D681K is a 14mm radial disc Metal Oxide Varistor (MOV) from RUILON, rated for 680V nominal varistor voltage and 4.5kA peak surge current. It's designed for overvoltage protection in power and industrial electronics.

AI replacement insight

Electrical riskhigh

Varistor voltage is critical for circuit protection and must be closely matched.

Package risklow

The 14mm radial disc package is a common standard.

Sourcing riskmedium

Many similar parts exist, but finding an exact parametric match may be difficult.

Can it be replaced directly?

No direct, verified drop-in replacement has been identified. Alternatives require parametric review, primarily for varistor voltage.

Best replacement path

Cross-reference to other manufacturers' 14D681K series parts. If unavailable, consider parametrically relaxed options like 14D561K, but verify the lower voltage is acceptable.

Main risk

The main risk is using a part with a different varistor voltage, which alters the circuit's clamping level and protection characteristics.

Recommended alternatives

A form-fit MOV with the same current rating but a significantly lower varistor voltage of 430V.

View details

Alternative comparison matrix

Feature / factor	14D681K	14D561K	14D431K	Compatibility / risk
Package	14mm Disc, Radial	14mm Disc, Radial	14mm Disc, Radial	14mm Disc, Radial — Form-factor is a match.; 14D431K: Form-factor is a match.
Voltage	680V (nominal)	560V	430V	560V / 430V — Lower varistor voltage will clamp earlier.; 14D431K: Significantly lower varistor voltage.
Current	4.5kA	4.5kA	4.5kA	4.5kA — Peak surge current matches.; 14D431K: Peak surge current matches.

Application & sourcing insights

Questions & answers

Finding a direct replacement for the 14D681K requires matching the 14mm disc package, 680V varistor voltage, and 4.5kA surge current. Candidates like 14D561K exist but have different voltage ratings and require review.