L78L05ABUTR
STMicroelectronics
Needs validationmedium risk
ST L78L05ABUTR is a close SOT-89 5V 100mA candidate, pending pinout and Vin checks.
Best Alternatives to 78L05
78L05 is a 5V 100mA fixed linear regulator. Similar SOT-89 parts exist, but pinout and Vin must be checked.
AI replacement insight
Electrical riskmedium
Vin, dropout, and stability may differ.
Package riskhigh
Only package names are known, not pin functions.
Firmware risklow
No firmware interface.
Sourcing risklow
Several active catalog options exist.
Can it be replaced directly?
Direct replacement for 78L05 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
Start with L78L05ABUTR, then verify SOT-89 pinout, Vin max, dropout, and thermal limits.
Main risk
Unverified pinout and package equivalence are the main risks.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | 78L05 | L78L05ABUTR | L78M05ABDT-TR | L78M05CDT-TR | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89 | SOT-89 | - | - | DPAK TO-252 — PCB change likely |
| Pinout | 3 pins | 3 pins | - | - | 3 pins — not a drop-in |
| Voltage | 5V out, 30V max in | 5V out, Vin missing | - | - | 35V max in — higher input rating |
| Current | 100mA | 100mA | - | - | 500mA — higher output current |
| Temperature | -20 to 120C | -40 to 125C | - | - | -40 to 125C — ES range covers target |
| Application | 5V fixed regulator | - | - | 5V fixed regulator | — |
Application & sourcing insights
Questions & answers
Verified drop-in options for 78L05 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.