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SSP7903P36FR

Public Unreviewed

by Ray

Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. 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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SSP7903P36FR

Shanghai Siproin Microelectronics · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-223

SSP7903P36FR from Shanghai Siproin Microelectronics, in a SOT-223. 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 reference for the regulator. Connect to a single-point ground; the internal reference and error amplifier are referred to this node.
2 VOUT power_out Regulated 3.6 V output (accuracy ±2%). Supplies up to 1 A load current; current-limit protection engages at ~1.8 A. Requires a 4.7 µF (typ) output capacitor for stability.
3 VIN power_in Unregulated supply input, 2.2 V to 40 V (abs max 40 V). Requires a 4.7 µF (typ) input capacitor. Must be at least VOUT + dropout (typ 20 mV @ 10 mA; 1 V @ 1 A) above the regulated output for regulation.

Key specifications

Parameter Value
Manufacturer Shanghai Siproin Microelectronics
Package SOT-223
Category PMIC
Pins 3

Ordering variants

Same part, different packaging or reel option.

  • SSP7903P36FR
  • SSP7903P36FRFG
  • SSP7903P36FRFBR
  • SSP7903P36FRFBG
  • SSP7903P36FRPR
  • SSP7903P36FRPG
  • SSP7903P36FRPBR
  • SSP7903P36FRPBG
  • SSP7903P36FRJR
  • SSP7903P36FRJG

CAD (KiCad official)

  • Symbol: SSP7903P36FR
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

3D model downloads

Two STEP files. Same geometry, different body top:

File Size Use it when
ssp7903p36fr.step 64 KB You want the bare part, or you mark your own boards.
ssp7903p36fr-etched.step 2.7 MB You want the part with SSP7903P36FR already on it.

The marking in the etched file is real recessed geometry cut into the solid, not a texture or a decal: 632 faces against 75 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