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L78M12ACDT-TR
Public Unreviewedby Ray
STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Datasheet-verified pinout, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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markdownL78M12ACDT-TR
STMicroelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-252-2(DPAK)
L78M12ACDT-TR from STMicroelectronics, in a TO-252-2(DPAK). Pinout and pin descriptions extracted from the manufacturer datasheet by ds2sf; symbol, footprint, and 3D from KiCad-official CAD.
Pinout
| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | INPUT | power_in | Unregulated DC input supply. Absolute maximum V_I = 35 V (for V_O up to 18 V). Requires a 0.33 µF input bypass capacitor if the regulator is located far from the power-supply filter. |
| 2 | GND | power_in | Common ground reference for input and output. Electrically connected to the exposed DPAK tab (thermal pad) which serves as the primary heatsink connection. |
| 3 | OUTPUT | power_out | Regulated +12 V output, 500 mA capable. V_O typ = 12 V (11.75 to 12.25 V at T_J = 25 °C). A 0.1 µF output capacitor improves transient response. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | TO-252-2(DPAK) |
| Category | PMIC |
| Pins | 3 |
Ordering variants
Same part, different packaging or reel option.
L78M12ACDT-TR
CAD (KiCad official)
- Symbol:
L78M12ACDT-TR - Footprint:
Package_TO_SOT_SMD:TO-252-2 - 3D model: TO-252-2(DPAK) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (29 pp, sha256
06d79d9f1c19140c, retrieved 2026-08-17, tier: manufacturer) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).