component

MC78M12CDTRKG

Public Made by Adom

by adom

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, DPAK-3. Datasheet-verified pinout, KiCad symbol/footprint/3D.

componentpmicmc78m12cdtrkg
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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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MC78M12CDTRKG

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · DPAK-3

MC78M12CDTRKG from onsemi, in a DPAK-3. 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 positive supply input. Recommended V_I = 14.5 V to 30 V for 12 V output; absolute maximum 35 V. Dropout voltage ~2.0 V. Bypass with a capacitor if the regulator is far from the filter capacitor.
2 Ground power_in Common ground reference for input and output. Also electrically connected to the exposed heatsink tab (terminal 4) of the DPAK package for thermal dissipation to the PCB copper pour.
3 Output power_out Regulated +12 V output, 500 mA maximum with adequate heatsinking. Typical output 12.0 V (11.50-12.50 V for C-grade at T_J = 25 C). Short-circuit current limit 350 mA typical; peak output current 700 mA typical.

Key specifications

Parameter Value
Manufacturer onsemi
Package DPAK-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • MC78M12CDTRKG
  • MC78M12CDTRKGT
  • MC78M12CDTRKGTG

CAD (KiCad official)

  • Symbol: MC78M12CDTRKG
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: DPAK-3 (KiCad packages3D, STEP)
  • 3D model files: mc78m12cdtrkg-etched.step / mc78m12cdtrkg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc78m12cdtrkg.step / mc78m12cdtrkg.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mc78m12cdtrkg.step 119 KB You want the bare part, or you mark your own boards.
mc78m12cdtrkg-etched.step 2.0 MB You want the part with MC78M12CDTRKG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 520 faces against 83 in the bare model. It survives export, section views, and rendering in any CAD tool, and it drops straight into KiCad or Fusion with no extra setup.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: onsemi datasheet (15 pp, sha256 2339bbc0a38dcd3b, 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