Is there a pin-compatible replacement for JK-SMD1210-110-16?

Candidates like the Littelfuse 1210L series are pin-compatible (1210 package), but their electrical ratings, especially hold current, are too low for a direct replacement and require circuit redesign.

What risks should I check before replacing JK-SMD1210-110-16?

The main risk is electrical mismatch. Using a part with a lower hold current will cause nuisance tripping. Also verify trip current, max voltage, and post-trip resistance to ensure circuit protection.

JK-SMD1210-110-16 Alternatives, Datasheet & Cross Reference | Jinrui Electronic Materials Co.

JK-SMD1210-110-16 is a 1210 surface-mount PTC resettable fuse rated for 1.1A hold current and 16V. Finding a direct replacement requires matching the package, hold current, and voltage rating.

AI replacement insight

Electrical riskhigh

Hold current mismatch will cause nuisance tripping.

Package risklow

Several candidates match the 1210 package.

Can it be replaced directly?

No, a direct, drop-in replacement for JK-SMD1210-110-16 was not identified. All PTC candidates have significantly lower current ratings.

Best replacement path

Search for a new 1210 PTC fuse with a hold current near 1.1A and a voltage rating of 16V or higher.

Main risk

Electrical mismatch, primarily the hold current being too low, leading to circuit failure under normal operation.

Recommended alternatives

Shares the 1210 package but has a critically lower hold current, making it unsuitable for the original application.

View details

Alternative comparison matrix

Feature / factor	JK-SMD1210-110-16	1210L005WR	1210L010WR	1210L020WR	Compatibility / risk
Package	1210	1210	1210	1210	1210 — Package size matches.; 1210L010WR: Package size matches.; 1210L020WR: Package size matches.
Current	1.1A	0.05A	0.1A	0.2A	0.05A / 0.1A / 0.2A — Hold current is critically lower, will cause nuisance tripping.; 1210L010WR: Hold current is critically lower, will cause nuisance tripping.; 1210L020WR: Hold current is critically lower, will cause nuisance tripping.
Voltage	16V	30V	30V	30V	30V — Higher voltage rating is safe.; 1210L010WR: Higher voltage rating is safe.; 1210L020WR: Higher voltage rating is safe.
Power	0.6W	0.6W	0.6W	0.6W	0.6W — Typical power dissipation matches.; 1210L010WR: Typical power dissipation matches.; 1210L020WR: Typical power dissipation matches.

Application & sourcing insights

Questions & answers

No direct drop-in replacement was found in this analysis. The best path is to search for a PTC fuse in a 1210 package with a hold current of ~1.1A and a max voltage of 16V or higher.