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MS78L05

Public Made by Adom

by adom

MSKSEMI Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89. Pinout extracted from the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs ms78l05: 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 (silk-marker, drawn, top-left) · Ray
ms78l05-etched.fit.json ms78l05: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ms78l05-etched.glb ms78l05: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wit… · Ray
ms78l05-etched.step ms78l05: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wit… · Ray
ms78l05.glb Publish 0.1.0 · Ray
ms78l05.kicad_mod Publish 0.1.0 · Ray
ms78l05.kicad_sym Publish 0.1.0 · Ray
ms78l05.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
ms78l05.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 (silk-marker, drawn, top-left) · Ray
page.json ms78l05: white body in tscircuit (pre-1.8 etch structure under an assembly instance); Ray 2026-10-19: black IC body wit… · Ray
README.md ms78l05: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MS78L05

MSKSEMI · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89

MS78L05 from MSKSEMI, in a SOT-89. 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 VO power_out Regulated output voltage pin. Provides fixed +5.0V (typ) at up to 100mA. Recommended 0.1µF ceramic bypass capacitor to GND.
2 GND power_in Ground reference. Common return for input and output. On SOT-89 this is the large center tab (pin 2) that also serves as the thermal pad.
3 VI power_in Unregulated input voltage. For 5V output typical range is 7V to 20V (absolute max 30V). Recommended 0.33µF input bypass capacitor to GND.

Key specifications

Parameter Value
Manufacturer MSKSEMI
Package SOT-89
Category PMIC
Pins 3

CAD (KiCad official)

  • Symbol: MS78L05
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89 (KiCad packages3D, STEP)
  • 3D model files: ms78l05-etched.step / ms78l05-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ms78l05.step / ms78l05.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ms78l05.step 57 KB You want the bare part, or you mark your own boards.
ms78l05-etched.step 1.1 MB You want the part with MS78L05 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 306 faces against 42 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: MSKSEMI datasheet (9 pp, sha256 1d7862d8017d42d4, retrieved 2026-08-17, tier: lcsc)
  • 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