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ssp7903p30fr

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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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SSP7903P30FR

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

SSP7903P30FR 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 / device return. All internal reference, error-amp, and pass-element currents return through this pin. Tie directly to the system 0 V rail with a low-impedance connection.
2 VOUT power_out Regulated 3.0 V output (±2%). Sources up to 1 A continuous; current-limited at ~1.8 A and short-circuit limited to ~120 mA. Requires a ceramic output capacitor (2.2 µF or 4.7 µF typical) for stability.
3 VIN power_in Unregulated supply input, 2.2 V to 40 V absolute maximum. A local input decoupling capacitor (2.2 µF/4.7 µF ceramic) is recommended close to the pin.
4 VOUT power_out Thermal tab / heat-slug on SOT-223. Electrically common with pin 2 (VOUT) by package construction; solder to a copper pour tied to VOUT to improve dissipation (SOT-223 PD ≈ 1500 mW).

Key specifications

Parameter Value
Manufacturer Shanghai Siproin Microelectronics
Package SOT-223
Category PMIC
Pins 4

Ordering variants

  • SSP7903P30FR
  • SSP7903P30FRFG
  • SSP7903P30FRFBR
  • SSP7903P30FRFBG
  • SSP7903P30FRPR
  • SSP7903P30FRPG
  • SSP7903P30FRPBR
  • SSP7903P30FRPBG
  • SSP7903P30FRJR
  • SSP7903P30FRJG

CAD (KiCad official)

  • Symbol: SSP7903P30FR
  • Footprint: Package_TO_SOT_SMD:SOT-223-3_TabPin2
  • 3D model: SOT-223 (KiCad packages3D, STEP)

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Shanghai Siproin Microelectronics datasheet (None 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

Symbol & Footprint

Schematic Symbol

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PCB Footprint

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Datasheet

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