# 5.0SMDJ40A

**DOWO** · TVS · SMC(DO-214AB)

5.0SMDJ40A from DOWO, in a SMC(DO-214AB). 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 | K | passive | Cathode, marked by the color band on the package; connects to the protected line, with VRWM 40.0 V, VBR 44.40 to 49.10 V at 1 mA, and VC 64.5 V at IPP 77.5 A for the 5.0SMDJ40A. |
| 2 | A | passive | Anode, the end opposite the color band, normally connected to ground for the unidirectional 5.0SMDJ40A, which is rated 5000 W peak pulse power (10/1000 µs). |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | DOWO |
| Package | SMC(DO-214AB) |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `5.0SMDJ40A`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `5-0smdj40a-etched.step` / `5-0smdj40a-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `5-0smdj40a.step` / `5-0smdj40a.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [DOWO datasheet](docs/5-0smdj40a-datasheet.pdf) (4 pp, sha256 `cbb6df184650913c`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (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/5-0smdj40a-datasheet.pdf)