Needs validationlow risk
Strong cross-vendor alternative from the same 78L05 family with matching key parameters.
Best Alternatives to UA78L05AIPK
The UA78L05AIPK is a popular 5V, 100mA linear voltage regulator in a SOT-89 package. This page provides analysis of potential alternatives, focusing on electrical and mechanical compatibility for your design.
AI replacement insight
Electrical riskmedium
Check temperature range, dropout voltage, and quiescent current.
Package risklow
SOT-89 is a standard package, but pinout must be verified.
Sourcing risklow
This is a common part type with many available alternatives.
Can it be replaced directly?
Yes, several manufacturers offer 78L05 regulators in the SOT-89 package that are strong candidates for direct replacement after pinout verification.
Best replacement path
Cross-vendor 78L05 family parts like ALJ 78L05(SOT-89) or Kexin LM78L05 offer strong compatibility.
Main risk
The primary risk is using an alternative with a narrower operating temperature range than the original TI part.
Recommended alternatives
6Alternative comparison matrix
| Feature / factor | UA78L05AIPK | 78L05(SOT-89) | LM78L05 | 78L05-150 | Compatibility / risk |
|---|---|---|---|---|---|
| Package | SOT-89 | SOT-89 | SOT-89 | SOT-89 | SOT-89 — Package matches.; LM78L05: Package matches.; 78L05-150: Package matches.; SE8550K2-HF: Package matches. |
| Voltage | 20V | 30V | 30V | - | 30V / 5.0V — Higher maximum input voltage.; LM78L05: Higher maximum input voltage.; SE8550K2-HF: Output voltage matches. |
| Current | 100mA | 100mA | 100mA | 150mA | 100mA / 150mA / 250mA — Output current matches.; LM78L05: Output current matches.; 78L05-150: Higher output current capability.; SE8550K2-HF: Higher output current capability. |
| Temperature | -40°C to 125°C | -40°C to 125°C | -55°C to 125°C | -20°C to 120°C | -40°C to 125°C / -55°C to 125°C / -20°C to 120°C / -20°C to 85°C — Operating temperature range matches.; LM78L05: Wider operating temperature range.; 78L05-150: Narrower operating temperature range.; SE8550K2-HF: Significantly narrower operating temperature range. |
Application & sourcing insights
Questions & answers
Parts from the 78L05 family like ALJ's 78L05(SOT-89) or Kexin's LM78L05 are strong functional alternatives, offering similar or better voltage and temperature ratings. Pinout should be verified.