Is there a pin-compatible replacement for JK-SMD0805-035-12V?

Yes, several parts like the BNstar SMD0805 series share the same 0805 package and 2-pin layout. However, their electrical parameters, especially hold current, differ and must be verified.

What risks should I check before replacing JK-SMD0805-035-12V?

The primary risk is the hold current (Ih). A higher Ih means the fuse allows more current before tripping, potentially damaging your circuit. Also verify max voltage (Vmax) is equal or greater than 12V, and check the new part's resistance and trip time characteristics.

JK-SMD0805-035-12V Alternatives, Datasheet & Cross Reference | Jinrui Electronic Materials Co.

Find and compare alternatives for the JK-SMD0805-035-12V PTC resettable fuse. Key considerations for replacement include hold current, max voltage, and package size.

AI replacement insight

Electrical riskhigh

Using a part with higher hold current compromises overcurrent protection.

Package risklow

The 0805 package is standard and widely available.

Can it be replaced directly?

No direct drop-in replacement has been identified. All candidates have a higher hold current, which alters the circuit's overcurrent protection level.

Best replacement path

The best path is to find a PTC fuse with a hold current of 0.35A in an 0805 package. Candidates like SMD0805-050C-16V are functionally similar but have a higher 0.5A hold current, requiring engineering review.

Main risk

The main risk is using a substitute with a higher hold current, which may fail to protect the circuit from overcurrent damage under conditions the original part was designed for.

Recommended alternatives

Functional alternative in 0805 package with slightly higher voltage rating but also higher hold current.

View details

Alternative comparison matrix

Feature / factor	JK-SMD0805-035-12V	SMD0805-050-13.2V	SMD0805-050C-16V	Compatibility / risk
Package	0805	0805	0805	0805 — Form-factor match.; SMD0805-050C-16V: Form-factor match.
Voltage	12V	13.2V	16V	13.2V / 16V — Slightly higher voltage rating provides margin.; SMD0805-050C-16V: Higher voltage rating provides more margin.
Current	0.35A	0.5A	0.5A	0.5A — Higher hold current. Provides less protection.; SMD0805-050C-16V: Higher hold current. Provides less protection.
Power	0.5W	0.5W	0.5W	0.5W — Power dissipation is identical.; SMD0805-050C-16V: Power dissipation is identical.

Application & sourcing insights

Questions & answers

While no perfect drop-in exists, parts like SMD0805-050C-16V are form-fit compatible (0805 package) but have a higher hold current (0.5A vs 0.35A). This change requires careful evaluation of your circuit's safety margins.