L78L15ABUTR
STMicroelectronics
Needs validationlow risk
A strong alternative from STMicroelectronics with matching voltage, current, and a likely compatible SOT-89 package.
Best Alternatives to CJ78L15
CJ78L15 is a 15V, 100mA linear voltage regulator in a SOT-89-3L package. This page provides analysis of potential replacements, including pin-compatible options and functional alternatives for various design needs.
AI replacement insight
Package riskhigh
Most alternatives are not drop-in compatible and require a board redesign. L78L15ABUTR has low package risk.
Electrical risklow
All candidates match the 15V output, and most offer equal or higher current, which is a safe margin.
Firmware risklow
These are simple linear regulators with no firmware.
Can it be replaced directly?
Direct replacement for CJ78L15 should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The most direct replacement path is L78L15ABUTR, which matches key specs and package type. Other options offer higher current but require a PCB redesign.
Main risk
The main risk is package incompatibility. Most alternatives are in different packages (DPAK, TO-220) and are not drop-in replacements.
Recommended alternatives
2Alternative comparison matrix
| Feature / factor | CJ78L15 | L78L15ABUTR | L78M15CDT-TR | Alt 3 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89-3L | SOT-89 | DPAK | SOT-89 / DPAK — Likely compatible, requires footprint verification.; L78M15CDT-TR: Different footprint requires board redesign. | |
| Voltage | 15V | 15V | 15V | 15V — matched; L78M15CDT-TR: matched | |
| Current | 0.1A | 0.1A | 0.5A | 0.1A / 0.5A — matched; L78M15CDT-TR: Higher current capability. | |
| Temperature | 0°C to 150°C | -40°C to 125°C | 0°C to 125°C | -40°C to 125°C — Wider low-end, but narrower high-end range.; L78M15CDT-TR: Narrower high-end range. | |
| Manufacturer | CJ | STMicroelectronics | - | STMicroelectronics — Cross-vendor. |
Application & sourcing insights
Questions & answers
Verified drop-in options for CJ78L15 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.