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SSP7903P33FR

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Shanghai Siproin Microelectronics Voltage Regulators - Linear, Low Drop Out (LDO) Regulators, SOT-223. Datasheet-verified pinout, KiCad symbol/footprint/3D.

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Datasheet

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Contents

README

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SSP7903P33FR

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

SSP7903P33FR 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 / common return for the regulator. Tie to system single-point ground; the SOT-223 tab is also connected to GND for heatsinking.
2 VOUT power_out Regulated 3.3 V output, ±2% tolerance, up to 1 A. Requires a 10 µF (typ.) output capacitor to common. Dropout is 20 mV at IOUT=10 mA and typ. 1000 mV at IOUT=1 A.
3 VIN power_in Unregulated input supply, 2.2 V to 40 V (absolute max 40 V). Bypass with 10 µF (typ.) capacitor to GND close to the pin.

Key specifications

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

Ordering variants

Same part, different packaging or reel option.

  • SSP7903P33FR
  • SSP7903P33FG
  • SSP7903P33FBR
  • SSP7903P33FBG
  • SSP7903P33PR
  • SSP7903P33PG
  • SSP7903P33PBR
  • SSP7903P33PBG
  • SSP7903P33JR
  • SSP7903P33JG

CAD (KiCad official)

  • Symbol: SSP7903P33FR
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)
  • 3D model files: ssp7903p33fr-etched.step / ssp7903p33fr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); ssp7903p33fr.step / ssp7903p33fr.glb are the bare package body.

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