Is there a pin-compatible replacement for SMD1812-110C-33V?

Yes, FSMD110-33R is a potential pin-compatible replacement. It has the same 1812 package and key electrical ratings, making it a candidate for direct substitution, pending in-circuit verification.

What risks should I check before replacing SMD1812-110C-33V?

Before replacing, verify that the hold and trip currents of the alternative meet your circuit's protection requirements. Using a part with a higher current rating will not protect the circuit as intended. Also check trip time and resistance characteristics.

SMD1812-110C-33V Alternatives, Datasheet & Cross Reference | BNstar

Find and compare alternatives for the BNstar SMD1812-110C-33V, a 1.1A/33V PTC resettable fuse in an 1812 package. Review pin-compatible and functional alternatives from other manufacturers.

AI replacement insight

Package risklow

All viable candidates use the same 1812 package.

Electrical riskmedium

Some alternatives have higher current ratings and must be reviewed by an engineer.

Can it be replaced directly?

Yes, FSMD110-33R is a potential pin-compatible replacement. It shares the same 1812 package, 33V rating, and 1.1A hold current.

Best replacement path

FSMD110-33R by FUZETEC is a strong pin-compatible candidate with matching key electrical ratings.

Main risk

The main risk is using an alternative with a higher current rating, which would reduce protection for the downstream circuit.

Recommended alternatives

A pin-compatible PTC fuse with matching hold/trip current and voltage ratings.

View details

Alternative comparison matrix

Feature / factor	SMD1812-110C-33V	FSMD110-33R	SMD1812-150C-33V	mSMD150-33V	Compatibility / risk
Package	1812	1812	1812	1812	1812 — Matches form factor.; SMD1812-150C-33V: Matches form factor.; mSMD150-33V: Matches form factor.
Current	40A	100A	3.0A	3.0A	100A / 3.0A — Higher max fault current is safer.; SMD1812-150C-33V: Higher trip current offers less protection.; mSMD150-33V: Higher trip current offers less protection.
Voltage	33V	33V	33V	33V	33V — Max voltage matches.; SMD1812-150C-33V: Max voltage matches.; mSMD150-33V: Max voltage matches.

Application & sourcing insights

Questions & answers

The best alternative identified is FSMD110-33R from FUZETEC. It is a strong candidate that matches the 1812 package, 33V voltage rating, and 1.1A hold current of the original part.