CJ78L15
Jiangsu Changjiang Electronics Technology Co., Ltd.
Needs validationmedium risk
A potential pin-compatible replacement, but requires review of the application's operating temperature.
Best Alternatives to L78L15ABUTR
L78L15ABUTR is a 15V, 100mA linear voltage regulator in a common SOT-89 package. Finding a substitute involves matching electrical parameters and carefully verifying the package, pinout, and operating temperature range.
AI replacement insight
Package riskhigh
Most alternatives are in different packages (DPAK, TO-220), requiring a PCB redesign.
Electrical riskmedium
The best pin-compatible option (CJ78L15) has a narrower temperature range (0°C min vs -40°C).
Can it be replaced directly?
Direct replacement for L78L15ABUTR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The closest candidate is CJ78L15, which matches the package and pinout but has a limited temperature range. Other candidates offer higher current but require a board redesign.
Main risk
The main risks are package mismatches requiring a board redesign, or for pin-compatible options, a narrower operating temperature range.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | L78L15ABUTR | CJ78L15 | L78M15CDT-TR | LM7815T | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89 | SOT-89-3L | DPAK | TO-220-3 | SOT-89-3L / DPAK / TO-220-3 — Package is a direct match.; L78M15CDT-TR: Requires board redesign for different SMT footprint.; LM7815T: Requires board redesign from SMT to through-hole. |
| Pinout | Verified Match | Verified Match | - | - | Verified Match — Pinout (OUT,GND,IN) matches target. |
| Voltage | 15.0V | 15.0V | 15.0V | 15.0V | 15.0V — matched; L78M15CDT-TR: matched; LM7815T: matched |
| Current | 0.1A | 0.1A | 0.5A | 1.2A | 0.1A / 0.5A / 1.2A — matched; L78M15CDT-TR: Higher output current capability.; LM7815T: Significantly higher output current capability. |
| Temperature | -40°C to 125°C | 0°C to 150°C | 0°C to 125°C | 0°C to 125°C | 0°C to 150°C / 0°C to 125°C — Does not meet -40°C low temp requirement.; L78M15CDT-TR: Narrower operating range at low temperatures.; LM7815T: Narrower operating range at low temperatures. |
Application & sourcing insights
Questions & answers
Verified drop-in options for L78L15ABUTR 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.