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MD5333

Public Made by Adom

by adom

Shanghai Mingda Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3. 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 md5333: 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
md5333-etched.fit.json md5333: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md5333-etched.glb md5333: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md5333-etched.step md5333: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
md5333.glb Publish 0.1.0 · Ray
md5333.kicad_mod Publish 0.1.0 · Ray
md5333.kicad_sym Publish 0.1.0 · Ray
md5333.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
md5333.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 md5333: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md md5333: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

MD5333

Shanghai Mingda Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-89-3

MD5333 from Shanghai Mingda Microelectronics, in a SOT-89-3. 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 GND power_in Ground / VSS return for the regulator. Common reference for VIN and VOUT; carries load return current up to 500 mA.
2 VOUT power_out Regulated 3.3V ±2% output. Sourcing capability up to 500 mA. Requires an output capacitor CL of ≥2.2 µF (tantalum) or ≥10 µF (aluminum electrolytic) for stability.
3 VIN power_in Unregulated supply input, 3.3V + Vdrop up to 10V absolute max (12V rated abs-max in table). Bypass with CIN ≥ 1.0 µF close to the pin.

Key specifications

Parameter Value
Manufacturer Shanghai Mingda Microelectronics
Package SOT-89-3
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • MD5333
  • MD5333MD5-33

CAD (KiCad official)

  • Symbol: MD5333
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: md5333-etched.step / md5333-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); md5333.step / md5333.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
md5333.step 57 KB You want the bare part, or you mark your own boards.
md5333-etched.step 1.1 MB You want the part with MD5333 already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 305 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: Shanghai Mingda Microelectronics datasheet (16 pp, sha256 54cbb58cd55dcd8d, 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