Is there a pin-compatible replacement for JK-SMD0805-300L?

Yes, several alternatives share the same 2-pin 0805 package. However, none are confirmed as direct drop-in replacements due to variations in critical parameters like trip time, requiring engineering review.

What risks should I check before replacing JK-SMD0805-300L?

Primarily check the trip time, initial resistance, and post-trip resistance. A slower trip time can reduce protection effectiveness. Higher initial resistance increases voltage drop and power loss during normal operation.

JK-SMD0805-300L Alternatives, Datasheet & Cross Reference | Jinrui Electronic Materials Co.

Finding a substitute for the JK-SMD0805-300L PTC fuse requires careful matching of electrical parameters. While several 0805 package alternatives exist, key differences in trip time and resistance must be evaluated for your application.

AI replacement insight

Electrical riskmedium

Slower trip time and higher initial resistance require validation.

Package risklow

Viable candidates share the same 0805 package.

Can it be replaced directly?

No direct drop-in replacement has been identified. All candidates require review due to parametric differences, primarily slower trip times.

Best replacement path

Evaluate candidates like TECHFUSE SL0805300 or BHFUSE BSMD0805L-300, but verify the slower trip time is acceptable for your application.

Main risk

The main risk is a slower trip time, which could lead to downstream component damage in overcurrent events.

Recommended alternatives

Shares package, voltage, and current ratings, but slower trip time necessitates careful review.

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Alternative comparison matrix

Feature / factor	JK-SMD0805-300L	BSMD0805L-300	SL0805300	Compatibility / risk
Package	0805	0805	0805	0805 — Same package and pin count.; SL0805300: Same package and pin count.
Voltage	6.0V	6.0V	6.0V	6.0V — Maximum operating voltage is identical.; SL0805300: Maximum operating voltage is identical.
Current	3.0A	3.0A	3.0A	3.0A — Hold current is identical.; SL0805300: Hold current is identical.
Trip Time	2.0s	5.0s	5.0s	5.0s — Significantly slower trip time.; SL0805300: Significantly slower trip time.
Resistance	0.003Ω	0.005Ω	0.007Ω	0.005Ω / 0.007Ω — Higher initial resistance.; SL0805300: Higher initial resistance.

Application & sourcing insights

Questions & answers

Candidates like TECHFUSE SL0805300 and BHFUSE BSMD0805L-300 are form-fit compatible with similar voltage and current ratings, but have slower trip times. The best choice depends on your circuit's tolerance for this difference.