Is there a pin-compatible replacement for SMD0805-050?

Yes, SMD0805-050-16V from TECHFUSE is a pin-compatible upgrade. Additionally, SMD0805B050TF from Yageo is a strong candidate that matches the package and key electrical specs, but as a cross-vendor part, its datasheet should be reviewed.

What risks should I check before replacing SMD0805-050?

Before replacing, you must verify the hold current (Ihold) and trip current (Itrip) match the 0.5A and 1A ratings of the original. Also, confirm the max voltage is at least 6V and the package is 0805. Using a part with a higher hold current is a significant risk.

SMD0805-050 Alternatives, Datasheet & Cross Reference | TECHFUSE

Find and compare replacements for the TECHFUSE SMD0805-050, a 6V, 0.5A PTC resettable fuse in an 0805 package. This page analyzes datasheet-verified upgrades, cross-vendor alternatives, and other functional variants.

AI replacement insight

Electrical riskhigh

Using a part with incorrect hold/trip current compromises circuit safety.

Package risklow

The 0805 package is highly standardized, making physical incompatibility unlikely.

Sourcing risklow

This is a common PTC fuse value with multiple manufacturers available.

Can it be replaced directly?

Yes, SMD0805-050-16V is a direct upgrade. For a cross-vendor option, Yageo's SMD0805B050TF matches all key electrical and package specifications and is a strong candidate for a pin-to-pin replacement after datasheet review.

Best replacement path

The best replacement is SMD0805-050-16V from the same manufacturer (TECHFUSE), which is a direct drop-in upgrade with a higher 16V voltage rating for better design margin.

Main risk

The main risk when replacing this PTC fuse is selecting a part with a higher hold current (e.g., 1.0A instead of 0.5A), which would fail to protect the circuit at the intended current level.

Recommended alternatives

An upgrade from the same manufacturer with a higher 16V rating, while matching the 0.5A hold current and 0805 package.

View details

Alternative comparison matrix

Feature / factor	SMD0805-050	SMD0805-050-16V	SMD0805B050TF	Compatibility / risk
Package	0805	0805	0805 (2012 metric)	0805 / 0805 (2012 metric) — Identical package ensures form and fit.; SMD0805B050TF: Identical package ensures form and fit.
Voltage	6.0V	16.0V	6.0V	16.0V — Higher voltage rating provides increased design margin.; SMD0805B050TF: Maximum voltage rating matches.
Current	1A	1.0A	0.5A	1.0A / 0.5A — Trip current matches target.; SMD0805B050TF: Hold current matches target's protection level.
Power	0.5W	0.5W	-	0.5W — Power dissipation is identical.
Manufacturer	TECHFUSE	-	Yageo	Yageo — Cross-vendor part, requires qualification.

Application & sourcing insights

Questions & answers

The best alternative is SMD0805-050-16V from TECHFUSE. It is an upgrade with a higher 16V rating while being a drop-in replacement in form, fit, and primary function.