component

SSP7903P33PR

Public Made by Adom

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.

componentpmicssp7903p33pr
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
main
Download ZIP Propose a change
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
Name Last commit message Last updated
docs ssp7903p33pr: 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
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 ssp7903p33pr: component.models_3d pose record per STEP (Z-up, seated z=0, pad-centre origin, identity binding) · Ray
README.md ssp7903p33pr: laser-etched CAD + chip hero (factory 2.0.0 backfill) · Ray
ssp7903p33pr-etched.fit.json ssp7903p33pr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ssp7903p33pr-etched.glb ssp7903p33pr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ssp7903p33pr-etched.step ssp7903p33pr: re-etch, flat white mark read from pin 1 (service-occt 1.4.0) + chip hero · Ray
ssp7903p33pr.glb Publish 0.1.0 · Ray
ssp7903p33pr.kicad_mod Publish 0.1.0 · Ray
ssp7903p33pr.kicad_sym Publish 0.1.0 · Ray
ssp7903p33pr.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
ssp7903p33pr.step Publish 0.1.0 · Ray

SSP7903P33PR

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

SSP7903P33PR 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. Single-point GND recommended per application circuit.
2 VIN power_in Input supply voltage. Absolute maximum 40V, minimum 2.2V. Bypass with ~10µF ceramic capacitor to GND. VIN must be ≥ VOUT + dropout (typ 4mV @ 1mA, 1V @ 1A).
3 VOUT power_out Regulated 3.3V output (±2% tolerance). Rated up to 1A maximum output current; current limit typ 1.8A; short-circuit current typ 120mA. Requires ~10µF ceramic output capacitor to GND.

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.

  • SSP7903PxxPx
  • SSP7903P33PR
  • SSP7903PxxPBx
  • SSP7903PxxFx
  • SSP7903PxxFBx
  • SSP7903PxxJx

CAD (KiCad official)

  • Symbol: SSP7903P33PR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3 (KiCad packages3D, STEP)
  • 3D model files: ssp7903p33pr-etched.step / ssp7903p33pr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ssp7903p33pr.step / ssp7903p33pr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ssp7903p33pr.step 57 KB You want the bare part, or you mark your own boards.
ssp7903p33pr-etched.step 2.1 MB You want the part with SSP7903P33PR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 521 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 (11 pp, sha256 d1763cb71baebbea, 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