# SM08C

**MDD(Microdiode Semiconductor)** · IC · SOT-23

SM08C from MDD(Microdiode Semiconductor), in a SOT-23. 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 | I/O 1 | passive | Protected bidirectional line 1, clamped to common pin 3 through a bidirectional TVS diode (SM08C VRWM 8 V, VB 8.5 V min at 1 mA). |
| 2 | I/O 2 | passive | Protected bidirectional line 2, clamped to common pin 3 through a bidirectional TVS diode (SM08C VRWM 8 V, VB 8.5 V min at 1 mA). |
| 3 | COMMON | passive | Common node shared by both bidirectional TVS diodes, connected to the reference/ground return of the protected lines. |

## Key specifications

| Parameter | Value |
|---|---|
| Manufacturer | MDD(Microdiode Semiconductor) |
| Package | SOT-23 |
| Category |  |
| Pins | 3 |

## 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 (working voltage) | VRWM |  |  | 8 | V |  | 2 |
| Breakdown voltage | VB | 8.5 |  |  | V | IT = 1 mA | 2 |
| Clamping voltage at 1 A | VC |  |  | 13.4 | V | @1A | 2 |
| Clamping voltage at peak pulse current | VC |  |  | 24 | V | @ 15 A (IPP column of this row) | 2 |
| Reverse leakage current | IR |  |  | 2 | µA |  | 2 |
| Junction capacitance | CT |  |  | 120 | pF |  | 2 |
| ESD per IEC 61000-4-2 (Air) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Air) | 1 |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 |  | 30 | kV | IEC 61000-4-2 (Contact) | 1 |
| Peak pulse power | PPP |  |  | 350 | W | tp = 8/20 µs waveform | 1 |
| Operating temperature | TOPT | -55 |  | 150 | °C |  | 1 |
| Storage temperature | TSTG | -55 |  | 150 | °C |  | 1 |
| Lead solder temperature (10 second duration) | TL |  |  | 260 | °C | 10 s duration | 1 |

## Materials and finish

As the datasheet states them (page.json `metadata.appearance`; the 3D model's colours follow it).

| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts |  | tin |  Terminal: Matte tin plated. http://www.microdiode.com Page :2 | 1 |

## CAD (KiCad official)

- Symbol: `SM08C`
- Footprint: `Package_TO_SOT_SMD:SOT-23`
- 3D model: SOT-23 (KiCad packages3D, STEP)
- 3D model files: `sm08c-etched.step` / `sm08c-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sm08c.step` / `sm08c.glb` are the bare package body.

## Provenance

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

- **Datasheet:** [MDD(Microdiode Semiconductor) datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8757233661945229312) (5 pp, sha256 `deddb74e0c252eba`, retrieved 2026-10-18, 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/sm08c-datasheet.pdf)