# BAS70-04-E3-18

**Vishay Intertech** · Schottky Diodes · SOT-23-3

BAS70-04-E3-18 from Vishay Intertech, in a SOT-23-3. 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 in the dual series (BAS70-04) configuration, per the top-view diagram. |
| 2 | K2 | passive | Cathode of the second Schottky diode in the dual series (BAS70-04) configuration, per the top-view diagram. |
| 3 | K1/A2 | passive | Center node joining the cathode of the first diode and the anode of the second diode in the dual series configuration; diode ratings are 70 V VRRM and 200 mA IF. |

## Key specifications

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

## CAD (KiCad official)

- Symbol: `BAS70-04-E3-18`
- Footprint: `Package_TO_SOT_SMD:SOT-23-3`
- 3D model: SOT-23-3 (KiCad packages3D, STEP)
- 3D model files: `bas70-04-e3-18-etched.step` / `bas70-04-e3-18-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `bas70-04-e3-18.step` / `bas70-04-e3-18.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8590458458941530112) (3 pp, sha256 `f3ca6734fbf44bf3`, 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/bas70-04-e3-18-datasheet.pdf)