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H7333-A

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by adom

Shanghai Siproin 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 h7333-a: 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
h7333-a-etched.fit.json h7333-a: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
h7333-a-etched.glb h7333-a: one-pass backfill (re-etched, pushed with pre-existing FAIL: datasheet) · Ray
h7333-a-etched.step h7333-a: one-pass backfill (re-etched, pushed with pre-existing FAIL: datasheet) · Ray
h7333-a.glb Publish 0.1.0 · Ray
h7333-a.kicad_mod Publish 0.1.0 · Ray
h7333-a.kicad_sym Publish 0.1.0 · Ray
h7333-a.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
h7333-a.step Publish 0.1.0 · Ray
package.json Publish 0.2.1 · 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 Publish 0.2.1 · Ray
README.md h7333-a: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray

H7333-A

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

H7333-A from Shanghai Siproin 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 / common return for the regulator. Connect to the system single-point ground; the input and output decoupling capacitor (10µF typ.) returns tie here.
2 VIN power_in Unregulated supply input. Operating range typically VOUT+1V (dropout ~100mV at 40mA) up to 15V recommended (18V absolute max). Requires a ~10µF input capacitor (C1) referenced to GND. For SOT-89 the center pin is the tab / thermal pad.
3 VOUT power_out Regulated 3.3V ±2% output, capable of sourcing up to 250mA (derated at higher VIN: ~150mA at 12V, ~100mA at 15V per Fig. 5). Requires a ~10µF output capacitor (C2) to GND for stability.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • H7333-AT
  • H7333-AP
  • H7333-AN
  • H7333-AM

CAD (KiCad official)

  • Symbol: H7333-A
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: h7333-a-etched.step / h7333-a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); h7333-a.step / h7333-a.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
h7333-a.step 57 KB You want the bare part, or you mark your own boards.
h7333-a-etched.step 1.0 MB You want the part with H7333-A already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 289 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 Siproin Microelectronics datasheet (14 pp, sha256 792fed91578d2bec, 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