0402L050SLKR
Littelfuse
Needs validationlow risk
A strong alternative from Littelfuse with identical ratings and a higher max fault current capability.
Best Alternatives to 0402L050SL6SR
The LUTE 0402L050SL6SR is a standard 0.5A, 6V PTC resettable fuse in a 0402 package. Several strong, pin-compatible alternatives from other manufacturers are available, offering excellent sourcing flexibility.
AI replacement insight
Electrical risklow
Key ratings match. Verify secondary parameters like trip curve and resistance from datasheets.
Package risklow
All strong candidates use the same standard 0402 surface-mount package.
Sourcing risklow
This is a common component type with multiple manufacturers, improving supply chain resilience.
Can it be replaced directly?
Direct replacement for 0402L050SL6SR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Use a cross-vendor PTC fuse like BSMD0402L-050 or 0402L050SLKR from Littelfuse, which match key electrical specs and package.
Main risk
The primary risk involves subtle differences in trip time characteristics and resistance, which can affect circuit protection timing and inrush current handling.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | 0402L050SL6SR | 0402L050SLKR | BSMD0402L-050 | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | 0402 | 0402 | 0402 | 0402 — Same package size.; BSMD0402L-050: Same package size. | |
| Current | 40A | 50A | 40A | 50A / 40A — Max Fault Current (Imax); BSMD0402L-050: Max Fault Current (Imax) | |
| Voltage | 6V | 6V | 6V | 6V — Max Voltage (Vmax); BSMD0402L-050: Max Voltage (Vmax) |
Application & sourcing insights
Questions & answers
Verified drop-in options for 0402L050SL6SR 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.