# KSMBJ5.0A-E3

**KUU** · TVS · SMB

KSMBJ5.0A-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 | Cathode | passive | Cathode terminal, marked by the color band on the unidirectional device; connects to the positive side of the protected line (stand-off voltage 5.0V, breakdown 6.40-7.00V at 10mA). |
| 2 | A | passive | Anode terminal of the unidirectional TVS diode, connected to the ground/return side of the protected circuit. |

## Key specifications

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

## Electrical characteristics

Limits as printed in the datasheet (page.json `metadata.characteristics` carries them as data).

| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Reverse Stand-Off Voltage | VR |  | 5 |  | V |  | 2 |
| Breakdown Voltage MIN | VBL | 6.4 |  |  | V | @IT = 10 mA | 2 |
| Breakdown Voltage MAX | VBH |  |  | 7 | V | @IT = 10 mA | 2 |
| Reverse Leakage Current | IR |  |  | 800 | uA | @VRWM | 2 |
| Peak Pulse Current | IPP |  |  | 65.3 | A | 10/1000us waveform | 2 |
| Maximum Clamping Voltage | VCH |  |  | 9.2 | V | @IPP | 2 |
| Peak Pulse Power Dissipation | PPPM | 600 |  |  | W | 10/1000us waveform (Note1, Fig.1) | 1 |
| Steady State Power Dissipation | PM(AV) |  |  | 5 | W | TL=75℃, lead lengths .375" (9.5mm) | 1 |
| Peak Forward Surge Current | IFSM |  |  | 100 | A | 8.3ms single half sine-wave superimposed on rated load (JEDEC method) | 1 |
| Operating Junction and Storage Temperature Range | TJ, TSTG | -55 |  | 150 | ℃ |  | 1 |

## CAD (KiCad official)

- Symbol: `KSMBJ5.0A-E3`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB (KiCad packages3D, STEP)
- 3D model files: `ksmbj5-0a-e3-etched.step` / `ksmbj5-0a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `ksmbj5-0a-e3.step` / `ksmbj5-0a-e3.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [KUU datasheet](docs/ksmbj5-0a-e3-datasheet.pdf) (4 pp, sha256 `1baf0da9cb3153fe`, retrieved 2026-10-22, tier: lcsc)
- **Extractor:** parts-factory `2.0.0` / `extract_pins 0.3`, primary `claude-sonnet-5-5` (text), consensus `claude-sonnet-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/ksmbj5-0a-e3-datasheet.pdf)