
TECHFUSE
Pin-compatible PTC fuse with matching current ratings and a slightly higher, safe voltage rating of 16V.
The Littelfuse 1210L050YR is a 0.5A hold current, 13.2V resettable PTC fuse in a 1210 package. Excellent pin-compatible alternatives like the TECHFUSE SMD1210-050 series are available with higher voltage ratings.
Candidates match critical currents and have higher voltage ratings.
All parts use the standard 1210 package.
Direct replacement for 1210L050YR 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 1210L050YR, then review parametric alternatives for package and electrical fit.
The main risk is minimal, but engineers should verify secondary parameters like resistance and trip time from the datasheet to ensure they fit the application's specific timing and power budget.

TECHFUSE
Pin-compatible PTC fuse with matching current ratings and a slightly higher, safe voltage rating of 16V.
| Feature / factor | 1210L050YR | SMD1210-050-16V | SMD1210-050-30V | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 1210 | 1210 | 1210 | 1210 — Package size matches.; SMD1210-050-30V: Package size matches. | |
| Voltage | 13.2V | 16V | 30V | 16V / 30V — Higher voltage rating provides margin.; SMD1210-050-30V: Higher voltage rating is a safe upgrade. | |
| Current | 1.0A | 1.0A | 1.0A | 1.0A — Trip current matches.; SMD1210-050-30V: Trip current matches. |
Verified drop-in options for 1210L050YR 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.