Is there a pin-compatible replacement for BSMD0603-003-30V?

Yes, several PTC fuses in the 0603 package are pin-compatible. However, their electrical parameters like hold current differ, requiring engineering review before substitution.

What risks should I check before replacing BSMD0603-003-30V?

The most critical risk is a mismatch in hold current. A higher current reduces protection, while a lower current can cause false trips. Also verify voltage rating and trip characteristics.

BSMD0603-003-30V Alternatives, Datasheet & Cross Reference | bhfuse

Finding a substitute for the BSMD0603-003-30V PTC fuse requires matching its 30mA hold current and 0603 package. Alternatives exist but often vary in current ratings, which is critical for circuit protection.

AI replacement insight

Electrical riskhigh

Hold current mismatch is a critical electrical risk.

Package risklow

The 0603 package is standard and widely available.

Can it be replaced directly?

No direct, drop-in replacement has been identified. All candidates require review of their current ratings, as they differ from the target's 30mA.

Best replacement path

The best path is selecting another PTC fuse from the BHFUSE BSMD0603 series, but careful verification of the hold current is required.

Main risk

The main risk is selecting a part with an incorrect hold current, leading to either inadequate protection (too high) or nuisance tripping (too low).

Recommended alternatives

Same series PTC with matching package but higher hold current (50mA vs 30mA). Requires engineering review.

View details

Alternative comparison matrix

Feature / factor	BSMD0603-003-30V	BSMD0603-005-33V	JK-SMD0603-001	Compatibility / risk
Package	0603	0603	-	0603 — Package size matches.
Voltage	30V	33V	-	30V — Voltage rating matches.
Current	30mA	150mA	-	10mA — Lower hold current may cause nuisance tripping.

Application & sourcing insights

Questions & answers

BSMD0603-005-33V is a potential alternative from the same series, but its 50mA hold current is higher than the original's 30mA and must be verified for your application.