Is there a pin-compatible replacement for SMD1812P014TF?

Yes, several PTC fuses like TECHFUSE mSMD020-60V share the same 1812 package and 2-pin layout. While pin-compatible, their electrical parameters like hold current differ and must be verified.

What risks should I check before replacing SMD1812P014TF?

The main risk is using a fuse with a higher hold and trip current, which may not protect your circuit from overcurrent events as intended. Also verify resistance characteristics and time-to-trip to ensure they meet your design's safety requirements.

SMD1812P014TF Alternatives, Datasheet & Cross Reference | RUILON

RUILON SMD1812P014TF is a 60V, 140mA hold current PTC resettable fuse in an 1812 package. Finding a replacement requires matching key current ratings for proper circuit protection.

AI replacement insight

Electrical riskmedium

Higher hold/trip currents may not protect the downstream circuit as designed.

Package risklow

Candidates share the same 1812 package, ensuring form and fit compatibility.

Can it be replaced directly?

No direct, drop-in replacement with identical current ratings was found. Alternatives like mSMD020-60V are available but have higher current ratings.

Best replacement path

Use a PTC fuse with a 0.2A hold current, like mSMD020-60V, after verifying the higher current is safe for the application.

Main risk

The primary risk is insufficient overcurrent protection due to candidates having higher hold and trip currents.

Recommended alternatives

A functional alternative in the same 1812 package with higher current ratings; requires design review.

View details

Alternative comparison matrix

Feature / factor	SMD1812P014TF	JK-MSMD020-60V	mSMD020-60V	Compatibility / risk
Package	1812	1812	1812	1812 — Form and fit are identical.; mSMD020-60V: Form and fit are identical.
Voltage	60V	60V	60V	60V — Maximum voltage rating matches.; mSMD020-60V: Maximum voltage rating matches.
Current	30A	100A	100A	100A — Higher max fault current (Imax) is safer.; mSMD020-60V: Higher max fault current (Imax) is safer.

Application & sourcing insights

Questions & answers

The best alternatives are PTC fuses in an 1812 package with a 60V rating and hold/trip currents as close as possible to 140mA/340mA, such as TECHFUSE mSMD020-60V. However, these have higher current ratings and require engineering review.