STMicroelectronics L78M
L78M variants from STMicroelectronics
L78M Overview
What changes between part numbers, and what to check before you lock the BOM — Integrated Circuits (ICs).
L78M is a STMicroelectronics order-code family — not a single orderable MPN. This page lists 14 variants that share the same core device but differ in suffix fields (package, grade, reel/tube, electrical bin, etc.). Pick the exact full part number; substituting within the family without checking the datasheet often causes assembly or spec mismatches.
Package: TO-220-3 | Mounting Type: Through Hole | Operating Temperature: 0°C ~ 150°C | Output Type: Fixed | Voltage Input Max: 35V | Supplier Device Package: TO-220 Other listed variants describe: 5V 500mA LDO Linear Voltage Regulator, TO-252, 35V In, 2% Acc; 5V 500mA LDO Linear Voltage Regulator, TO Package.
Across listed variants, watch these parameters: packages: TO-220-3.
Suffix examples in this family: 12CV-DG, 05ABDT-TR, 05ABV, 05ACDT-TR, 08ABDT-TR, 08CDT-TR, 09CDT-TR, 10ABDT-TR. The characters after the base number usually encode package, temperature, or performance grade — compare the variant table column-by-column rather than assuming pin-compatible drops-in.
Example MPNs: L78M12CV-DG, L78M05ABDT-TR, L78M05ABV, L78M05ACDT-TR, L78M08ABDT-TR, L78M08CDT-TR.
Key Features
- Footprint / package: TO-220-3Single package option across listed variants; still confirm reel vs tube suffix if you auto-insert.
- Lifecycle mix: ActiveConfirm lifecycle on the exact MPN, not just the base number prefix.
- 14 distinct suffix patternsExamples: 12CV-DG, 05ABDT-TR, 05ABV, 05ACDT-TR, 08ABDT-TR (+9 more). Decode suffix meaning in the ordering notes under the variant table.
Target Applications
- Integrated Circuits (ICs) — design-in and field replacement
- BOM scrub where only the base prefix is known but suffix is TBD
- Second-source checks when the original MPN is constrained
Ordering Variants
Compare 14 L78M part numbers by package, electrical parameters, lifecycle, and availability. Use RFQ for stock and lead-time confirmation.
| Part Number | Description | Package Type | Manufacturer | Lifecycle | RoHS | Availability | Action |
|---|---|---|---|---|---|---|---|
| L78M12CV-DG | Package: TO-220-3 | Mounting Type: Through Hole | Operating Temperature: 0°C ~ 150°C | Output Type: Fixed | Voltage Input Max: 35V | Supplier Device Package: TO-220 | TO-220-3 | STMicroelectronics | Active | Compliant | In Stock | |
| L78M05ABDT-TR | 5V 500mA LDO Linear Voltage Regulator, TO-252, 35V In, 2% Acc | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M05ABV | 5V 500mA LDO Linear Voltage Regulator, TO Package | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M05ACDT-TR | 5V 500mA LDO Linear Voltage Regulator, TO-252, 35V In, 2% Acc | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M08ABDT-TR | 8V Fixed LDO, 500mA, 35V In, TO-252 SM | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M08CDT-TR | Precision 500 mA regulators | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M09CDT-TR | 9V 500mA LDO Voltage Regulator, TO-252, 35V In, 2V Dropout | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M10ABDT-TR | 10V 500mA LDO Linear Voltage Regulator, TO-252, 35V In | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M12ABDT-TR | 12V 500mA LDO Regulator, TO-252, 35V In, 2% Acc | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M12ACDT-TR | 12V 500mA Positive LDO Regulator, 2% Accuracy, TO-252 | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M12CDT-TR | 12V LDO Regulator, 500mA, TO-252, 35V In, Surface Mount | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M15CDT-TR | 15V LDO Regulator, 500mA, TO-252, 35V In, Surface Mount | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M24ABDT-TR | 24V 500mA LDO Voltage Regulator, TO-252, 40V In, 2% Acc | - | STMicroelectronics | Active | Compliant | In Stock | |
| L78M24CDT-TR | 24V 500mA Positive LDO Voltage Regulator, TO-252 | - | STMicroelectronics | Active | Compliant | In Stock |
Ordering Code Differences
How suffixes on L78M map to package, grade, and reel options.
L78M uses a shared prefix; characters after the prefix encode orderable options. Two lines with the same prefix are not drop-in replacements unless the differing columns match your need.
Suffixes seen here: 12CV-DG, 05ABDT-TR, 05ABV, 05ACDT-TR, 08ABDT-TR, 08CDT-TR, 09CDT-TR, 10ABDT-TR, 12ABDT-TR, 12ACDT-TR (+4 more).
Full MPN examples: L78M12CV-DG, L78M05ABDT-TR, L78M05ABV, L78M05ACDT-TR, L78M08ABDT-TR.
Tip: photograph or copy the reel label — reel diameter, QTY per reel, and moisture sensitivity level (MSL) are often suffix-driven and won't show in the schematic.
How to Choose the Right L78M Integrated Circuits (ICs)
Match the footprint first
Packages here: TO-220-3. Open the land-pattern drawing before you substitute a different suffix.
Electrical headroom
Compare voltage and current columns in the variant table. For L78M, a suffix with lower voltage or current rating will not survive the same circuit without recalculation.
Temp grade letter matters
Commercial (0–70 °C) and industrial (−40–85 °C+) suffixes look similar in the prefix — confirm ambient + self-heating, not just the first page of the datasheet.
Copy the full MPN
Do not BOM only "L78M" — include the full suffix (e.g. 12CV-DG, 05ABDT-TR, 05ABV). RFQ with reel/tube preference and required date code.
Technical Specifications
Core parameters for L78M product family
Identity
Variant Parameters
Source L78M with Octatronics
Request stock confirmation, lead time, date code, and pricing for all 14 ordering variants from STMicroelectronics. Our team supports active, EOL, and hard-to-find component sourcing.
- Original manufacturer parts with traceability options
- BOM upload and multi-line RFQ support
- Package, grade, and compliance verification
Frequently Asked Questions
Common technical questions about the L78M product family.