CJ78L05
Jiangsu Changjing Electronics Technology Co., Ltd.
Needs validationlow risk
Strong match in the same TO-92 package with identical key electrical ratings. Pinout verification is required.
Best Alternatives to L78L05ACZ
The L78L05ACZ is a popular 5V fixed positive voltage regulator in a TO-92 package, delivering up to 100mA. It is widely used for on-board voltage regulation in a variety of electronic circuits.
AI replacement insight
Package riskhigh
Most alternatives are SMT, requiring board redesign.
Electrical risklow
Key parameters (5V, 100mA) are standard and easily matched.
Firmware risklow
Not applicable for a simple linear regulator.
Can it be replaced directly?
Direct replacement for L78L05ACZ should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The CJ78L05 is a strong candidate for a direct replacement, offering the same package and key electrical parameters, but pinout verification is required.
Main risk
The primary risk is package incompatibility. Many alternatives are in surface-mount packages (SOT-23, SOT-89) which require a different PCB layout than the through-hole TO-92.
Recommended alternatives
3Alternative comparison matrix
| Feature / factor | L78L05ACZ | CJ78L05 | MG78L05T3 | SE8650X2-HF | Compatibility / risk |
|---|---|---|---|---|---|
| Package | TO-92 | TO-92 | SOT23-3 | SOT23-3 | TO-92 / SOT23-3 — Same package type, likely form-fit compatible.; MG78L05T3: Surface-mount package requires board redesign.; SE8650X2-HF: Surface-mount package requires board redesign. |
| Pinout | 3 | 3 | - | - | 3 — Pinout is likely identical (78L05 standard) but requires datasheet verification. |
| Voltage | 5.0V | 5.0V | 5.0V | 5.0V | 5.0V — Output voltage is identical.; MG78L05T3: Output voltage is identical.; SE8650X2-HF: Output voltage is identical. |
| Current | 100mA | 100mA | 120mA | 200mA | 100mA / 120mA / 200mA — Output current is identical.; MG78L05T3: Slightly higher output current.; SE8650X2-HF: Higher output current capability. |
| Temperature | 0°C to 125°C | 0°C to 150°C | -40°C to 85°C | -40°C to 105°C | 0°C to 150°C / -40°C to 85°C / -40°C to 105°C — Wider operating temperature range.; MG78L05T3: Significantly lower maximum operating temperature.; SE8650X2-HF: Lower maximum operating temperature. |
Application & sourcing insights
Questions & answers
Verified drop-in options for L78L05ACZ 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.