# H7133-1

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

H7133-1 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

SOT-23 numbering convention; names as printed by Siproin.

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | GND | power_in | Device ground / common return for the internal reference, error amplifier, and pass FET. Tie to the system ground plane; place the input and output capacitor returns close to this pin to minimize regulation error. |
| 2 | VOUT | power_out | Regulated 3.3 V output (SOT-23 lower-right lead). |
| 3 | VIN | power_in | Supply input (SOT-23 top lead). |

## Key specifications

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

## Ordering variants

Same part, different packaging or reel option.

- `H7133-1TR`
- `H7133-1TG`
- `H7133-1PR`
- `H7133-1PG`
- `H7133-1NR`
- `H7133-1NG`

## CAD (KiCad official)

- Symbol: `H7133-1`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `h7133-1-etched.step` / `h7133-1-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `h7133-1.step` / `h7133-1.glb` are the bare package body.

## 3D model downloads

Two STEP files. Same geometry, different body top:

| File | Size | Use it when |
|---|---|---|
| [`h7133-1.step`](h7133-1.step) | 59 KB | You want the bare part, or you mark your own boards. |
| [`h7133-1-etched.step`](h7133-1-etched.step) | 1.1 MB | You want the part with `H7133-1` already on it. |

The marking in the etched file is real recessed geometry cut into the solid, not a
texture or a decal: 282 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/h7133-1-datasheet.pdf) (16 pp, sha256 `b56d63e4e3666e63`, 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/h7133-1-datasheet.pdf)