SM30T30AY
Public Made by Adomby adom
STMicroelectronics Electrostatic And Surge Protection (TVS/ESD), SMC(DO-214AB). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
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README
markdownSM30T30AY
STMicroelectronics · Electrostatic And Surge Protection (TVS/ESD) · SMC(DO-214AB)
SM30T30AY from STMicroelectronics, in a SMC(DO-214AB). 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 | 1 | passive | Terminal 1 of an unpolarised fuse; either orientation. |
| 2 | 2 | passive | Terminal 2 of an unpolarised fuse; either orientation. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SMC(DO-214AB) |
| Category | TVS/Fuse/Board Level 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 leakage current at 25 °C | IRM | 0.2 | µA | at VRM = 26 V, Tj = 25 °C | 3 | ||
| Reverse leakage current at 85 °C | IRM | 1 | µA | at VRM = 26 V, 85 °C | 3 | ||
| Breakdown voltage | VBR | 28.9 | 30.4 | 31.9 | V | at IR = 1 mA | 3 |
| Clamping voltage (10/1000 µs) | VCL | 42.1 | V | at IPP = 71 A, 10/1000 µs | 3 | ||
| Peak pulse current (10/1000 µs) | IPP | 71 | A | 10/1000 µs; surge capability given for both directions | 3 | ||
| Dynamic resistance (10/1000 µs) | RD | 143 | mΩ | 10/1000 µs | 3 | ||
| Clamping voltage (8/20 µs) | VCL | 53.5 | V | at IPP = 626 A, 8/20 µs | 3 | ||
| Peak pulse current (8/20 µs) | IPP | 626 | A | 8/20 µs; surge capability given for both directions | 3 | ||
| Dynamic resistance (8/20 µs) | RD | 34.5 | mΩ | 8/20 µs | 3 | ||
| Breakdown voltage temperature coefficient | αT | 9.7 | 10-4/°C | VBR(Tj) = VBR(25 °C) x (1 + αT x (Tj - 25)) | 3 | ||
| Peak pulse voltage ISO10605 contact discharge (C = 330 pF, R = 330 Ω) | VPP | 30 | kV | ISO10605, C = 330 pF, R = 330 Ω, contact discharge | 2 | ||
| Peak pulse voltage ISO10605 air discharge (C = 330 pF, R = 330 Ω) | VPP | 30 | kV | ISO10605, C = 330 pF, R = 330 Ω, air discharge | 2 | ||
| Peak pulse voltage ISO10605 / IEC 61000-4-2 contact discharge (C = 150 pF, R = 330 Ω) | VPP | 30 | kV | ISO10605 / IEC 61000-4-2, C = 150 pF, R = 330 Ω, contact discharge | 2 | ||
| Peak pulse voltage ISO10605 / IEC 61000-4-2 air discharge (C = 150 pF, R = 330 Ω) | VPP | 30 | kV | ISO10605 / IEC 61000-4-2, C = 150 pF, R = 330 Ω, air discharge | 2 | ||
| Peak pulse power dissipation | PPP | 3000 | W | Tj initial = Tamb | 2 | ||
| Storage temperature range | Tstg | -65 | 175 | °C | 2 | ||
| Operating junction temperature range | Tj | -55 | 175 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10 s | 2 |
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 | • Lead finishing: matte tin plating Complies with the following standards | 1 |
CAD (KiCad official)
- Symbol:
SM30T30AY - Footprint:
Diode_SMD:D_SMC - 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (16 pp, sha256
7643ae0f2d1fb9d6, retrieved 2026-10-28, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins, primarytwo-terminal convention(convention), consensusoff(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).