# MD7033

**Shanghai Mingda Microelectronics** · Monitors & Reset Circuits · SOT-23-5L

MD7033 from Shanghai Mingda Microelectronics, in a SOT-23-5L. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

## Pinout

| Pin | Name | Type | Function |
|---|---|---|---|
| 1 | VOUT | output | Active-low NMOS open-drain detector output that goes low when VDD falls below the 3.3V detect voltage, sinking at least 2 mA at VOUT=0.2V (VDD=3.1V), with output current limited to 10mA and output voltage to VSS-0.3V to VDD+0.3V. |
| 2 | VDD | power_in | Positive supply input and monitored voltage, with an operating range of 1.5V to 15V and an absolute maximum of -0.3V to 18V. |
| 3 | GND | power_in | Ground reference (VSS) for the detector. |
| 4 | NC | unconnected | No-connect pin, labeled NC on the SOT23-5 pin assignment drawing. |
| 5 | NC | unconnected | No-connect pin, labeled NC on the SOT23-5 pin assignment drawing. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Shanghai Mingda Microelectronics |
| Package | SOT-23-5L |
| Category | Power Management ICs |
| Pins | 5 |

## CAD (KiCad official)

- Symbol: `MD7033`
- Footprint: `Package_TO_SOT_SMD:SOT-23-5`
- 3D model: SOT-23-5L (KiCad packages3D, STEP)
- 3D model files: `md7033-etched.step` / `md7033-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `md7033.step` / `md7033.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Shanghai Mingda Microelectronics datasheet](docs/md7033-datasheet.pdf) (17 pp, sha256 `a73a565d183efa3d`, retrieved 2026-10-27, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text+vision), consensus `claude-opus-5-5` (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
- **CAD:** KiCad official libraries (CC-BY-SA 4.0).

[Datasheet PDF](docs/md7033-datasheet.pdf)