component

MC7812BTG

Public Made by Adom

by adom

onsemi Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, TO-220AB. 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 mc7812btg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
viewers pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray
mc7812btg-etched.fit.json mc7812btg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mc7812btg-etched.glb mc7812btg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mc7812btg-etched.step mc7812btg: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
mc7812btg.glb Publish 0.1.0 · Ray
mc7812btg.kicad_mod Publish 0.1.0 · Ray
mc7812btg.kicad_sym Publish 0.1.0 · Ray
mc7812btg.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
mc7812btg.step Publish 0.1.0 · Ray
package.json Publish 0.2.0 · Ray
pads.json pin 1: carry the footprint's marker into the .lbr, the viewer and page.json (pad-position, synthesised, bottom-right) · Ray
page.json mc7812btg: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md mc7812btg: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MC7812BTG

onsemi · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · TO-220AB

MC7812BTG from onsemi, in a TO-220AB. 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 VIN power_in Unregulated positive input voltage. Must remain typically 2.0 V above VOUT even at the ripple minimum; absolute max input for Case 936 is 35 V. A 0.33 uF input capacitor is recommended if the regulator is far from the bulk supply filter.
2 GND power_in Common ground shared between input and output returns. The exposed heatsink tab of the D2PAK-3 (Case 936) package is electrically bonded to this pin.
3 VOUT power_out Regulated +12 V output (nominal, MC7812 variant). Delivers >1.0 A with adequate heatsinking; internally current-limited and thermally protected. An output capacitor (<0.1 uF may cause instability; ~0.1 uF or larger recommended) improves transient response.

Key specifications

Parameter Value
Manufacturer onsemi
Package TO-220AB
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • MC7812BTGT
  • MC7812BTG
  • MC7812BTGD2T
  • MC7812BTGDT
  • MC7812BTGDTRK

CAD (KiCad official)

  • Symbol: MC7812BTG
  • Footprint: Package_TO_SOT_THT:TO-220-3_Vertical
  • 3D model: TO-220AB (KiCad packages3D, STEP)
  • 3D model files: mc7812btg-etched.step / mc7812btg-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); mc7812btg.step / mc7812btg.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
mc7812btg.step 83 KB You want the bare part, or you mark your own boards.
mc7812btg-etched.step 849 KB You want the part with MC7812BTG already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 223 faces against 48 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 (31 pp, sha256 92281b28af847a90, 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