LM78L05
Kexin
Needs validationlow risk
A pin-compatible replacement with identical key electrical ratings and a wider operating temperature range.
Best Alternatives to 78L05(SOT-89)
The 78L05 in a SOT-89 package is a common 5V, 100mA linear regulator. This guide reviews functional alternatives and pin-compatible replacements, highlighting key differences in voltage, temperature, and pinout.
AI replacement insight
Electrical risklow
Many parts match key 5V/100mA/30V specs.
Package riskhigh
While package matches, pinout can vary between different part families (e.g., 78L05 vs HT7550).
Sourcing risklow
The 78L05 is a multi-sourced commodity part.
Can it be replaced directly?
Yes, the `LM78L05` in a SOT-89 package is often a direct, pin-compatible replacement for the `78L05(SOT-89)`.
Best replacement path
Use a `LM78L05` from a reputable manufacturer, as it is highly likely to be a pin-compatible, direct replacement.
Main risk
The main risk is selecting a functionally similar part with an incompatible pinout, which would require a PCB redesign.
Recommended alternatives
5Alternative comparison matrix
| Feature / factor | 78L05(SOT-89) | LM78L05 | ME6203A50PG | UA78L05AIPK | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89 | SOT-89 | SOT-89 | SOT-89 | SOT-89 — Package matches target.; ME6203A50PG: Package matches target.; UA78L05AIPK: Package matches target. |
| Pinout | Pin 1:OUT, 2:GND, 3:IN | Pin 1:OUT, 2:GND, 3:IN | unknown | unknown | Pin 1:OUT, 2:GND, 3:IN / unknown — Pinout matches 78L05 standard and target datasheet.; ME6203A50PG: Pinout not verified, may differ.; UA78L05AIPK: Pinout is likely standard 78L05 but requires verification.; SE8550K2-HF: Pinout not verified, may differ. |
| Voltage | 30.0V | 30.0V | 30.0V | 20.0V | 30.0V / 20.0V / 35V — Max input voltage matches.; ME6203A50PG: Max input voltage matches.; UA78L05AIPK: Max input voltage is lower.; SE8550K2-HF: Higher max input voltage. |
| Current | 0.1A | 0.1A | - | - | 0.1A / 0.25A — Output current matches.; SE8550K2-HF: Higher output current capability. |
| Temperature | -40°C to 125°C | -55°C to 125°C | 0°C to 100°C | -40°C to 125°C | -55°C to 125°C / 0°C to 100°C / -40°C to 125°C / -20°C to 85°C — Operating temperature range is wider.; ME6203A50PG: Operating temperature range is narrower.; UA78L05AIPK: Operating temperature matches.; SE8550K2-HF: Operating temperature range is narrower. |
Application & sourcing insights
Questions & answers
The LM78L05 from various manufacturers is often a pin-compatible replacement with matching electrical specifications. Always verify the specific manufacturer's datasheet.