component
SD12
Public Made by Adomby adom
MDD Microdiode Semiconductor ESD And Surge Protection (TVS/ESD), SOD-323. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 16d ago |
| viewers | 16d ago |
| package.json | 16d ago |
| page.json | 16d ago |
| README.md | 16d ago |
| sd12-etched.glb | 16d ago |
| sd12-etched.step | 16d ago |
| sd12-hero.glb | 16d ago |
| sd12-hero.overlay.json | 16d ago |
| sd12.glb | 16d ago |
| sd12.kicad_mod | 16d ago |
| sd12.kicad_sym | 16d ago |
| sd12.lbr | 16d ago |
| sd12.step | 16d ago |
SD12
MDD Microdiode Semiconductor · ESD And Surge Protection (TVS/ESD) · SOD-323
SD12 from MDD Microdiode Semiconductor, in a SOD-323. 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 of the unidirectional TVS diode (the I/O line being protected); SD12 has a 12 V working voltage (VRWM), 13.3 V minimum breakdown at 1 mA and 32 V maximum clamping voltage at 11 A. |
| 2 | A | passive | Anode of the unidirectional TVS diode, normally tied to ground; the device is rated for ±30 kV IEC 61000-4-2 air and contact ESD and 350 W peak pulse power (8/20 µs). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | MDD Microdiode Semiconductor |
| Package | SOD-323 |
| 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 |
|---|---|---|---|---|---|---|---|
| Working peak reverse voltage | VRWM | 12 | V | 2 | |||
| Breakdown voltage | VB | 13.3 | V | IT = 1 mA | 2 | ||
| Clamping voltage at 1 A | VC | 19 | V | @ 1 A | 2 | ||
| Clamping voltage | VC | 32 | V | @ 11 A | 2 | ||
| Reverse leakage current | IR | 1 | µA | 2 | |||
| Capacitance | CT | 130 | pF | 2 | |||
| Peak pulse power | PPP | 350 | W | tp=8/20us waveform | 1 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | V | IEC 61000-4-2 (Air) | 1 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -30 | 30 | V | IEC 61000-4-2 (Contact) | 1 | |
| Operating temperature | TOPT | -55 | 150 | °C | 1 | ||
| Storage temperature | TSTG | -55 | 150 | °C | 1 | ||
| Lead solder temperature (maximum) | TL | 260 | °C | 10 second 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:
SD12 - Footprint:
Diode_SMD:D_SOD-323 - 3D model: SOD-323 (KiCad packages3D, STEP)
- 3D model files:
sd12-etched.step/sd12-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sd12.step/sd12.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: MDD Microdiode Semiconductor datasheet (4 pp, sha256
10c3d65b4326cef2, retrieved 2026-10-23, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text+vision), consensusclaude-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).