Is there a pin-compatible replacement for RL1206A180K?

Yes, other parts in the RUILON RL1206A series, like RL1206A240K, share the same 1206 package and 2-pin layout. However, their electrical parameters differ and must be verified for your application.

What risks should I check before replacing RL1206A180K?

The main risk is insufficient overvoltage protection. A substitute with a higher clamping voltage (e.g., RL1206A240K's 59V vs. the original's 46V) may not protect downstream components. Always verify the substitute's voltage ratings against your circuit's requirements.

RL1206A180K Alternatives, Datasheet & Cross Reference | RUILON

The RUILON RL1206A180K is a 1206 surface-mount varistor for low-voltage DC circuit protection, featuring a 14V DC rating and 46V clamping voltage. Finding a substitute requires careful matching of these protection parameters.

AI replacement insight

Electrical riskmedium

Clamping voltage is ~28% higher, reducing protection margin. Requires circuit analysis.

Package risklow

Package is a standard 1206, matching the target.

Sourcing risklow

The best candidate is from the same manufacturer and series, suggesting similar availability.

Can it be replaced directly?

No direct, drop-in replacement has been identified. The closest candidate, RL1206A240K, has a higher clamping voltage, which reduces the level of protection.

Best replacement path

Consider RL1206A240K as a parametric alternative, but verify the higher 59V clamping voltage is acceptable for your application.

Main risk

Electrical overstress on protected components due to the substitute having a higher clamping voltage than the original part.

Recommended alternatives

A 1206 varistor from the same series with slightly higher operating and clamping voltages; requires review.

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Alternative comparison matrix

Feature / factor	RL1206A180K	RL1206A240K	Compatibility / risk
Package	1206	1206	1206 — Same package and pin count.
Voltage	46V	59V	59V — Max Clamping Voltage is higher, offering less protection.
Current	100A	100A	100A — Withstanding Surge Current is identical.
Lifecycle	Active	Active	Active — Both parts are active.

Application & sourcing insights

Questions & answers

RL1206A240K is a potential alternative from the same series, but it has a higher clamping voltage (59V vs 46V). Careful review of your circuit's maximum voltage tolerance is required before substitution.