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SSP7901P33PBR

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Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-89-3L. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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3D Model

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Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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Contents

README

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SSP7901P33PBR

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

SSP7901P33PBR from Shanghai Siproin Microelectronics, in a SOT-89-3L. 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 Vout power_out Regulated 3.3V output. Delivers up to 300mA with typical dropout of 20mV at 10mA and 350mV at 100mA. Requires a 10µF output capacitor to ground for stability.
2 GND power_in Ground reference for the regulator. Should be tied to the single-point system ground.
3 Vin power_in Unregulated input supply. Operating range 2.2V (typ) to 40V (absolute max); recommended operating range up to 36V. Bypass with a 10µF capacitor to ground.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SSP7901P33PBR
  • SSP7901P33PBRP
  • SSP7901P33PBRM
  • SSP7901P33PBRM5
  • SSP7901P33PBRF
  • SSP7901P33PBRFB

CAD (KiCad official)

  • Symbol: SSP7901P33PBR
  • Footprint: Package_TO_SOT_SMD:SOT-89-3
  • 3D model: SOT-89-3L (KiCad packages3D, STEP)
  • 3D model files: ssp7901p33pbr-etched.step / ssp7901p33pbr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ssp7901p33pbr.step / ssp7901p33pbr.glb are the bare package body.

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ssp7901p33pbr.step 57 KB You want the bare part, or you mark your own boards.
ssp7901p33pbr-etched.step 2.2 MB You want the part with SSP7901P33PBR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 550 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 (13 pp, sha256 03f0310573bfded8, 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