component

MC78L12ACDR2G

Public Made by Adom

by adom

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOIC-8. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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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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MC78L12ACDR2G

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOIC-8

MC78L12ACDR2G from onsemi, in a SOIC-8. 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 VOUT power_out Regulated positive output voltage, nominally +12 V (11.5 V min, 12.5 V max at TJ = +25 °C) at up to 100 mA. Bypass with 0.1 µF ceramic for improved transient response.
2 GND power_in Common ground reference. Pins 2, 3, 6, and 7 are electrically common to the die attach flag and act as the thermal/electrical ground for the regulator.
3 GND power_in Common ground reference; tied to the die attach flag together with pins 2, 6, and 7 to reduce package thermal resistance.
4 NC unconnected No internal connection. Leave floating or tie to ground per PCB layout convenience.
5 NC unconnected No internal connection. Leave floating or tie to ground per PCB layout convenience.
6 GND power_in Common ground reference; tied to the die attach flag together with pins 2, 3, and 7.
7 GND power_in Common ground reference; tied to the die attach flag together with pins 2, 3, and 6.
8 VIN power_in Unregulated positive input supply. For the 12 V variant, VIN must be at least ~1.7 V above VOUT (typ dropout) and is rated for continuous operation up to 35 V (absolute max 35 Vdc for the 12-18 V group). Bypass with 0.33 µF close to the pin.

Key specifications

Parameter Value
Manufacturer onsemi
Package SOIC-8
Category PMIC
Pins 8

Ordering variants

Same part, different packaging or reel option.

  • MC78L12ACDR2G
  • MC78L12ACDR2GP
  • MC78L12ACDR2GRP
  • MC78L12ACDR2GRA
  • MC78L12ACDR2GZP
  • MC78L12ACDR2GZRP
  • MC78L12ACDR2GZRA

CAD (KiCad official)

  • Symbol: MC78L12ACDR2G
  • Footprint: Package_SO:SOIC-8_3.9x4.9mm_P1.27mm
  • 3D model: SOIC-8 (KiCad packages3D, STEP)
  • 3D model files: mc78l12acdr2g-etched.step / mc78l12acdr2g-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc78l12acdr2g.step / mc78l12acdr2g.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mc78l12acdr2g.step 122 KB You want the bare part, or you mark your own boards.
mc78l12acdr2g-etched.step 2.5 MB You want the part with MC78L12ACDR2G already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 609 faces against 147 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 (14 pp, sha256 5e07299724d54f75, 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