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L78M12ACDT-TR

Public Made by Adom

by adom

STMicroelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-252-2(DPAK). Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Generated by kicad-footprint-generator · KiCad file format 20260206
Name Last commit message Last updated
docs l78m12acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
l78m12acdt-tr-etched.fit.json l78m12acdt-tr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
l78m12acdt-tr-etched.glb l78m12acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
l78m12acdt-tr-etched.step l78m12acdt-tr: etch along the lead row, tab up; full MPN text (service-occt 1.9.3) (service-occt 1.6.0, from the plain… · Ray
l78m12acdt-tr-hero.glb Publish 0.1.1 · Ray
l78m12acdt-tr-hero.overlay.json Publish 0.1.1 · Ray
l78m12acdt-tr.glb Publish 0.1.0 · Ray
l78m12acdt-tr.kicad_mod Publish 0.1.0 · Ray
l78m12acdt-tr.kicad_sym Publish 0.1.0 · Ray
l78m12acdt-tr.lbr rebuild the library on adom-lbr 2.32.0. The published copy was built by 2.18.0, which imported every KiCad roundrect an… · Ray
l78m12acdt-tr.step Publish 0.1.0 · Ray
package.json Publish 0.1.1 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (silk-marker, drawn, top-left) · Ray
page.json Publish 0.1.1 · Ray
README.md l78m12acdt-tr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

L78M12ACDT-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)
  • 3D model files: l78m12acdt-tr-etched.step / l78m12acdt-tr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); l78m12acdt-tr.step / l78m12acdt-tr.glb are the bare package body.

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).

Datasheet PDF