Is there a pin-compatible replacement for 07D180K?

No pin-compatible replacements for 07D180K have been verified. While some alternatives share a 2-pin radial package, their electrical characteristics and physical dimensions differ, posing a high risk.

What risks should I check before replacing 07D180K?

When replacing 07D180K, check the varistor voltage, maximum clamping voltage, and physical size (element diameter). Using a part with higher voltages will reduce circuit protection, and a larger size may not fit.

07D180K Alternatives, Datasheet & Cross Reference | RUILON

Finding a substitute for the RUILON 07D180K 7mm MOV requires careful review. This varistor offers low-voltage protection (15V) in a compact radial package, and available alternatives often have different voltage ratings or larger physical dimensions.

AI replacement insight

Electrical riskhigh

Substitutes have much higher clamping voltages, offering poor protection.

Package riskmedium

Most candidates have a larger 10mm diameter vs the target's 7mm.

Sourcing riskmedium

Finding a 7mm varistor with a ~15V rating is challenging.

Can it be replaced directly?

No direct drop-in replacement for 07D180K is currently confirmed. All potential candidates require significant engineering validation due to mismatched electrical or physical parameters.

Best replacement path

Review the application's max voltage and space constraints to find a varistor with a closer voltage rating (e.g., 18V-22V) and 7mm diameter.

Main risk

The main risk is reduced circuit protection from using a substitute with a higher varistor and clamping voltage.

Recommended alternatives

A potential but risky alternative with much higher voltage ratings and a larger physical size.

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Alternative comparison matrix

Feature / factor	07D180K	FTR10D390K	FTR10D470K	Compatibility / risk
Voltage	38V	77V	93V	77V / 93V — Clamping voltage is ~2x higher, exposing downstream components to higher transients.; FTR10D470K: Clamping voltage is ~2.5x higher, exposing downstream components to higher transients.
Package	7mm	10mm	10mm	10mm — Larger element diameter may not fit on the PCB.; FTR10D470K: Larger element diameter may not fit on the PCB.
Current	250A	500A	500A	500A — Higher surge current capability is an improvement.; FTR10D470K: Higher surge current capability is an improvement.

Application & sourcing insights

Questions & answers

Currently, no direct or strong alternatives for 07D180K have been identified. Candidates like FTR10D470K have significantly different voltage ratings and physical size, requiring careful engineering review.