# SSP7603P50MR

**Shanghai Siproin Microelectronics** · Voltage Regulators - Linear, Low Drop Out (LDO) Regulators · SOT-23

SSP7603P50MR from Shanghai Siproin Microelectronics, in a SOT-23. 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 | Device ground / Vss return. Common reference for both the input and output rails. |
| 2 | VOUT | power_out | Regulated 5.0 V positive output. Rated for up to 500 mA (Vin-Vout=1 V). Requires an output capacitor (typ. 1 uF tantalum or 6.8 uF ceramic) close to the pin for stability. |
| 3 | VIN | power_in | Unregulated positive input supply. Operating range 3.5 V to 15 V (absolute max 18 V). Requires a 1 uF input decoupling capacitor to ground. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Siproin Microelectronics |
| Package | SOT-23 |
| Category | PMIC |
| Pins | 3 |

## Ordering variants

Same part, different packaging or reel option.

- `SSP7603P50MRPR`
- `SSP7603P50MRPG`
- `SSP7603P50MR`
- `SSP7603P50MRMG`
- `SSP7603P50MRM5R`
- `SSP7603P50MRM5G`

## CAD (KiCad official)

- Symbol: `SSP7603P50MR`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `ssp7603p50mr-etched.step` / `ssp7603p50mr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ssp7603p50mr.step` / `ssp7603p50mr.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`ssp7603p50mr.step`](ssp7603p50mr.step) | 59 KB | You want the bare part, or you mark your own boards. |
| [`ssp7603p50mr-etched.step`](ssp7603p50mr-etched.step) | 2.5 MB | You want the part with `SSP7603P50MR` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 593 faces against 69 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](docs/ssp7603p50mr-datasheet.pdf) (9 pp, sha256 `3b68c21dd6651bc3`, 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](docs/ssp7603p50mr-datasheet.pdf)