Is there a pin-compatible replacement for RL30-300?

Yes, parts like RL30-400 and JK60-375 share the same radial leaded package and 2-pin layout. However, their electrical characteristics, especially hold current, differ and must be verified before use.

What risks should I check before replacing RL30-300?

The primary risk is using a part with a higher hold current (e.g., 4A vs 3A), which will not protect the circuit at the original level. Also check trip time, resistance, and power dissipation to avoid unexpected behavior.

RL30-300 Alternatives, Datasheet & Cross Reference | RUILON

The RUILON RL30-300 is a 30V, 3A PTC resettable fuse in a radial leaded package. When seeking alternatives, it's critical to match the hold current and voltage rating to ensure proper circuit protection.

AI replacement insight

Electrical riskhigh

Higher hold current in substitutes will not protect the circuit at the original 3A level.

Package risklow

Candidates share the same radial leaded package.

Can it be replaced directly?

No direct, drop-in replacement was found. All viable candidates have a higher hold current, which changes the circuit's protection characteristics.

Best replacement path

Parametric alternative (e.g., RL30-400) with engineering review.

Main risk

Electrical risk due to higher hold current in all viable candidates.

Recommended alternatives

Same family and package, but higher 4.0A hold current requires engineering review.

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Alternative comparison matrix

Feature / factor	RL30-300	RL30-400	JK60-375	Compatibility / risk
Package	Radial Leaded	Radial Leaded	Radial Leaded	Radial Leaded — Same package family.; JK60-375: Same package family.
Voltage	30.0V	30.0V	60.0V	30.0V / 60.0V — Voltage rating matches.; JK60-375: Higher voltage rating is generally safer.
Current	6A	8A	7.5A	8A / 7.5A — Trip current is higher.; JK60-375: Trip current is higher.
Power	2.0W	2.5W	3.2W	2.5W / 3.2W — Higher power dissipation.; JK60-375: Significantly higher power dissipation.

Application & sourcing insights

Questions & answers

The RUILON RL30-400 is a potential alternative from the same family, but its higher 4.0A hold current requires careful review. No direct drop-in replacement was identified; verification of circuit requirements is essential.