Is there a pin-compatible replacement for RM14D471KD14E100?

While several parts like RM14D561KD14E100 share the same 14mm radial package and pinout, their electrical properties differ. The most critical difference is a higher varistor voltage, so they are not direct drop-in replacements without analysis.

What risks should I check before replacing RM14D471KD14E100?

The main risk is using a replacement with a higher varistor voltage (e.g., 560V instead of 470V). This will cause the device to clamp at a higher voltage, potentially allowing damaging transients to pass through to your downstream components.

RM14D471KD14E100 Alternatives, Datasheet & Cross Reference | Dersonic

RM14D471KD14E100 is a 14mm, 470V radial disc varistor from Dersonic. Finding a direct replacement requires matching varistor voltage, peak current, and package size.

AI replacement insight

Electrical riskhigh

Candidates have higher varistor/clamping voltages, reducing protection.

Package risklow

Viable candidates share the same 14mm radial disc package.

Can it be replaced directly?

No direct, drop-in replacement was found. All viable candidates have a higher varistor voltage, which changes the circuit's protection level and requires engineering validation.

Best replacement path

Consider same-series part RM14D561KD14E100, but verify the higher 560V varistor voltage is acceptable for the application.

Main risk

The primary risk is insufficient overvoltage protection due to candidates having higher varistor and clamping voltages.

Recommended alternatives

A form-fit match from the same series, but with a higher varistor voltage that requires engineering review.

View details

Alternative comparison matrix

Feature / factor	RM14D471KD14E100	RM14D561KD14E100	14D561K	Compatibility / risk
Package	Radial, 14mm Disc	Radial, 14mm Disc	Radial, 14mm Disc	Radial, 14mm Disc — Form and fit are identical.; 14D561K: Common industry package matches.
Voltage	470V	560V	560V	560V — Higher varistor voltage reduces protection level.; 14D561K: Higher varistor voltage reduces protection.
Clamping Voltage	775V	915V	925V	915V / 925V — Higher clamping voltage, requires review.; 14D561K: Significantly higher clamping voltage.
Current	4.5kA	4.5kA	4.5kA	4.5kA — Peak surge current matches.; 14D561K: Peak current matches.
Energy	118J	125J	-	125J — Slightly higher energy absorption is better.
Manufacturer	Dersonic	-	SEMIWARE	SEMIWARE — Cross-vendor alternative.

Application & sourcing insights

Questions & answers

RM14D561KD14E100 from the same Dersonic series is a form-fit match but has a higher 560V varistor voltage. This change requires careful engineering review to ensure it still protects your circuit.