L78M05ABDT-TR
STMicroelectronics
Needs validationlow risk
Likely pin-compatible upgrade with tighter 2% voltage tolerance in the same DPAK package.
Best Alternatives to L78M05CDT-TR
The L78M05CDT-TR is a widely-used 5V, 500mA linear voltage regulator from STMicroelectronics in a DPAK package. This page provides a detailed analysis of potential substitutes, including pin-compatible upgrades and functional alternatives for various application needs.
AI replacement insight
Electrical risklow
Most alternatives offer identical or better electrical specs, except for max temperature.
Package riskhigh
Several functional alternatives are in different packages (TO-220, D2PAK) and are not drop-in replacements.
Sourcing risklow
The L78xx family is widely available from ST and other manufacturers.
Can it be replaced directly?
Direct replacement for L78M05CDT-TR should use only Datasheet verified or Strong match candidates; many approved options still require engineering review.
Best replacement path
The best replacement path is within the STMicroelectronics L78xx series. For a direct replacement, L78M05ABDT-TR offers tighter tolerance. For higher current needs, L7805CDT-TR is a suitable upgrade in the same package.
Main risk
The primary risk when substituting is either a mismatch in physical package, requiring a PCB redesign, or a lower maximum operating temperature on some alternatives which must be verified against the application's thermal environment.
Recommended alternatives
4Alternative comparison matrix
| Feature / factor | L78M05CDT-TR | L78M05ABDT-TR | L7805CDT-TR | L7805CV-DG | Compatibility / risk |
|---|---|---|---|---|---|
| Package | DPAK (TO-252) | DPAK (TO-252) | - | - | TO-220 — Different package (Through-Hole vs. Surface Mount). Not a drop-in replacement. |
| Voltage | 5.0V | 5.0V | - | - | 5.0V — Output voltage is identical. |
| Current | 0.5A | 0.5A | - | - | 1.5A — Candidate offers higher output current capability. |
| Tolerance | 4% (typ) | 2% | - | - | 2% — Candidate has tighter output voltage tolerance. |
| Temperature | 0°C to 150°C | -40°C to 125°C | - | - | 0°C to 125°C — Candidate has a lower max operating temperature. |
Application & sourcing insights
Questions & answers
Verified drop-in options for L78M05CDT-TR 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.