
RUILON
A strong alternative with matching package, hold/trip currents, and voltage rating. Likely a direct replacement.
Find verified substitutes for the Littelfuse 0805L020YR, a 0.2A/9V PTC resettable fuse. This guide compares pin-compatible alternatives and highlights key parametric differences to ensure circuit protection.
All candidates use the same 0805 package.
Many alternatives have incorrect current ratings. Only select parts with matching hold/trip currents.
Direct replacement for 0805L020YR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Start with Datasheet verified or Strong match candidates for 0805L020YR, then review parametric alternatives for package and electrical fit.
The main risk is using a part with a higher hold or trip current, which would compromise the circuit's overcurrent protection.

RUILON
A strong alternative with matching package, hold/trip currents, and voltage rating. Likely a direct replacement.
| Feature / factor | 0805L020YR | SMD0805P020TF | SMD0805-035-16V | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0805 | 0805 | 0805 | 0805 — Identical package ensures form and fit.; SMD0805-035-16V: Identical package ensures form and fit. | |
| Current | 0.5A | 0.5A | 0.75A | 0.5A / 0.75A — Trip current matches target specification.; SMD0805-035-16V: Higher trip current provides less sensitive protection. | |
| Voltage | 9.0V | 9.0V | 16.0V | 9.0V / 16.0V — Maximum voltage rating is identical.; SMD0805-035-16V: Higher voltage rating provides more margin. | |
| Power | 0.5W | 0.5W | - | 0.5W — Power dissipation matches target. |
Verified drop-in options for 0805L020YR are limited in the current batch. Review candidates marked Strong match or Datasheet verified, and validate package, pinout, and electrical limits before committing a BOM change.