component
SM6T33CA
Public Made by Adomby adom
STMicroelectronics TVS, SMB(DO-214AA). 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
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSM6T33CA
STMicroelectronics · TVS · SMB(DO-214AA)
SM6T33CA from STMicroelectronics, in a SMB(DO-214AA). 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: the banded/marked end per the datasheet; pad 1 of the KiCad diode footprint. |
| 2 | A | passive | Anode. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | STMicroelectronics |
| Package | SMB(DO-214AA) |
| 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 leakage current at VRM, 25 °C | IRM | 0.2 | µA | @ VRM, Tamb = 25 °C | 3 | ||
| Reverse leakage current at VRM, 85 °C | IRM | 1 | µA | @ VRM, 85 °C | 3 | ||
| Stand-off voltage | VRM | 28.2 | V | 3 | |||
| Breakdown voltage | VBR | 31.4 | 33 | 34.7 | V | IR = 1 mA; Tamb = 25 °C; pulse test tp < 50 ms | 3 |
| Clamping voltage, 10/1000 µs surge | VCL | 45.7 | V | IPP = 13.1 A, 10/1000 µs | 3 | ||
| Dynamic resistance, 10/1000 µs surge | RD | 0.84 | Ω | 10/1000 µs | 3 | ||
| Clamping voltage, 8/20 µs surge | VCL | 59 | V | IPP = 68 A, 8/20 µs | 3 | ||
| Dynamic resistance, 8/20 µs surge | RD | 0.357 | Ω | 8/20 µs | 3 | ||
| Voltage temperature coefficient | αT | 9.8 | 10-4/ °C | VBR @ TJ = VBR @ 25 °C x (1 + αT x (TJ, 25)) | 3 | ||
| Peak pulse power dissipation | PPP | 600 | W | Tj initial = Tamb | 2 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| Operating junction temperature range | Tj | -55 | 150 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | during 10 s | 2 | |||
| Junction to leads thermal resistance | Rth(j-l) | 20 | °C/W | 2 | |||
| Junction to ambient thermal resistance | Rth(j-a) | 100 | °C/W | On printed circuit on recommended pad layout | 2 |
CAD (KiCad official)
- Symbol:
SM6T33CA - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
sm6t33ca-etched.step/sm6t33ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm6t33ca.step/sm6t33ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (10 pp, sha256
9340708960a8d7f6, retrieved 2026-10-22, tier: manufacturer) - Extractor: parts-factory
2.0.0/extract_pins, primarycathode-band 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).