# KSMBJ200A-E3

**KUU** · ESD And Surge Protection (TVS/ESD) · SMB

KSMBJ200A-E3 from KUU, in a SMB. 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, the terminal marked by the color band on the SMB body; the unidirectional device (VRWM 200V, VBR 224-247V at 1mA) is reverse-biased with this terminal positive. |
| 2 | A | passive | Anode, the terminal opposite the cathode band on the SMB body; it connects to the lower-potential side in normal protection use. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | KUU |
| Package | SMB |
| Category | Circuit Protection |
| Pins | 2 |

## CAD (KiCad official)

- Symbol: `KSMBJ200A-E3`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `ksmbj200a-e3-etched.step` / `ksmbj200a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ksmbj200a-e3.step` / `ksmbj200a-e3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588944578447204352) (4 pp, sha256 `1baf0da9cb3153fe`, retrieved 2026-10-13, 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/ksmbj200a-e3-datasheet.pdf)