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MC78M18CDTRKG

Public Made by Adom

by adom

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

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3D Model

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Symbol & Footprint

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Datasheet

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Contents

README

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MC78M18CDTRKG

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

MC78M18CDTRKG from onsemi, in a 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 VI power_in Unregulated positive input voltage. Operating range 21 V to 33 Vdc for the 18 V option; absolute maximum 35 Vdc. An input bypass capacitor (typ. 0.33 µF) is recommended if the regulator is located far from the power-supply filter.
2 GND power_in Common ground reference for input and output. In the DPAK-3 (DT suffix) package the heatsink tab (mechanical terminal 4) is internally connected to Pin 2 (Ground).
3 VO power_out Regulated +18 V output. Nominal 18 V, min 17.3 V / max 18.7 V at Tj=25°C. Rated 500 mA continuous with adequate heatsinking; internally short-circuit current limited (typ. 350 mA at VI=35 V). A 0.1 µF output capacitor is recommended for transient response.

Key specifications

Parameter Value
Manufacturer onsemi
Package DPAK
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • MC78M18CDTRKG
  • MC78M18CDTRKGT
  • MC78M18CDTRKGTG

CAD (KiCad official)

  • Symbol: MC78M18CDTRKG
  • Footprint: Package_TO_SOT_SMD:TO-252-2
  • 3D model: DPAK (KiCad packages3D, STEP)
  • 3D model files: mc78m18cdtrkg-etched.step / mc78m18cdtrkg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc78m18cdtrkg.step / mc78m18cdtrkg.glb are the bare package body.

Provenance

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

  • Datasheet: onsemi datasheet (17 pp, sha256 b7a95582017262fc, 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