# MMBD914

**Changjing** · Switching Diodes · SOT-23

MMBD914 from Changjing, in a SOT-23. 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 | A | passive | Diode anode, shown in the SOT-23 symbol as the input side of the single diode toward pin 3, with VR and VRRM of 100 V and IO of 300 mA. |
| 2 | NC | unconnected | Not connected; the SOT-23 symbol shows pin 2 as an isolated terminal with no connection to the diode. |
| 3 | K | passive | Diode cathode, shown in the SOT-23 symbol on the output side of the single diode from pin 1, with VR and VRRM of 100 V and IO of 300 mA. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Changjing |
| Package | SOT-23 |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `MMBD914`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `mmbd914-etched.step` / `mmbd914-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `mmbd914.step` / `mmbd914.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Changjing datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8586178112602451968) (2 pp, sha256 `13f80e4fe0d25b25`, retrieved 2026-10-09, 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/mmbd914-datasheet.pdf)