# BAS40-05Q

**Yangzhou Yangjie Elec Tech** · Schottky Diodes · SOT-23(TO-236)

BAS40-05Q from Yangzhou Yangjie Elec Tech, in a SOT-23(TO-236). 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 | A1 | passive | Anode of the first Schottky diode (VRRM 40V, IFAV 120mA) in the BAS40-05Q dual common-cathode configuration. |
| 2 | A2 | passive | Anode of the second Schottky diode (VRRM 40V, IFAV 120mA) in the BAS40-05Q dual common-cathode configuration. |
| 3 | K | passive | Common cathode of both Schottky diodes in the BAS40-05Q (VRRM 40V, IFAV 120mA per diode). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | Yangzhou Yangjie Elec Tech |
| Package | SOT-23(TO-236) |
| Category | Diodes |
| Pins | 3 |

## CAD (KiCad official)

- Symbol: `BAS40-05Q`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23(TO-236) (KiCad packages3D, STEP)
- 3D model files: `bas40-05q-etched.step` / `bas40-05q-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas40-05q.step` / `bas40-05q.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Yangzhou Yangjie Elec Tech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8603016987609997312) (5 pp, sha256 `b1e912ba90d55c84`, retrieved 2026-10-12, 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/bas40-05q-datasheet.pdf)