component
SM12OC
Public Made by Adomby adom
UMW Electrostatic And Surge Protection (TVS/ESD), SOT-23. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSM12OC
UMW · Electrostatic And Surge Protection (TVS/ESD) · SOT-23
SM12OC from UMW, 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/O1 | passive | Protected bidirectional line 1 (TVS diode path to common pin 3); SM12OC has a 12V working voltage (VRWM) and 13.3V min breakdown at 1mA. |
| 2 | I/O2 | passive | Protected bidirectional line 2 (TVS diode path to common pin 3); SM12OC has a 12V working voltage (VRWM) and 13.3V min breakdown at 1mA. |
| 3 | COMMON | passive | Common node of the two TVS diode pairs, shown joined at pin 3 in the schematic; connect it to the reference (ground) for the protected lines. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | UMW |
| Package | SOT-23 |
| Category | TVS/Fuse/Board Level Protection |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse power (tp=8/20us waveform) | PPP | 130 | W | tp = 8/20 µs waveform | 2 | ||
| ESD per IEC 61000-4-2 (Air) | VESD | -30 | 30 | kV | IEC 61000-4-2 (Air) | 2 | |
| ESD per IEC 61000-4-2 (Contact) | VESD | -20 | 20 | kV | IEC 61000-4-2 (Contact) | 2 | |
| Junction Temperature | TOPT | -55 | 150 | °C | 2 | ||
| Storage Temperature | TSTG | -55 | 150 | °C | 2 | ||
| Lead Solder Temperature, Maximum | TL | 260 | °C | 10 second duration | 2 | ||
| Reverse working voltage | VRWM | 12 | V | 3 | |||
| Breakdown voltage | VB | 13.3 | V | IT = 1 mA | 3 | ||
| Clamping voltage | VC | 19 | V | @ 1 A | 3 | ||
| Clamping voltage | VC | 26 | V | @ 5 A | 3 | ||
| Reverse leakage current | IR | 0.2 | µA | 3 | |||
| Capacitance | CT | 15 | pF | 3 |
CAD (KiCad official)
- Symbol:
SM12OC - Footprint:
Package_TO_SOT_SMD:SOT-23 - 3D model: SOT-23 (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: UMW datasheet (7 pp, sha256
ab41c5036950d20d, retrieved 2026-11-04, 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).