SM6T27CA
Public Made by Adomby adom
STMicroelectronics ESD And Surge Protection (TVS/ESD), 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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README
markdownSM6T27CA
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)
SM6T27CA 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 |
|---|---|---|---|---|---|---|---|
| Breakdown voltage (bidirectional, CA variant) | VBR | 25.7 | 27 | 28.4 | V | at IBR = 1 mA (Tamb = 25 °C) | 3 |
| Peak reverse leakage current, 25 °C | IRM | 0.2 | µA | at VRM, 25 °C | 3 | ||
| Peak reverse leakage current, 85 °C | IRM | 1 | µA | at VRM, 85 °C | 3 | ||
| Clamping voltage, 10/1000 µs surge | VCL | 37.5 | V | 10/1000 µs, IPP = 16 A | 3 | ||
| Peak pulse current, 10/1000 µs | IPP | 16 | A | 10/1000 µs | 3 | ||
| Dynamic resistance, 10/1000 µs | RD | 0.569 | Ω | 10/1000 µs | 3 | ||
| Clamping voltage, 8/20 µs surge | VCL | 48.3 | V | 8/20 µs, IPP = 83 A | 3 | ||
| Peak pulse current, 8/20 µs | IPP | 83 | A | 8/20 µs | 3 | ||
| Dynamic resistance, 8/20 µs | RD | 0.24 | Ω | 8/20 µs | 3 | ||
| VBR temperature coefficient | αT | 9.6 | 10-4/°C | 3 | |||
| Stand-off voltage (VRM column) | VRM | 23.1 | V | 3 | |||
| Peak pulse voltage, contact discharge | VPP | 30 | kV | IEC 61000-4-2, C = 150 pF, R = 330 Ω, contact discharge | 2 | ||
| Peak pulse voltage, air discharge | VPP | 30 | kV | IEC 61000-4-2, C = 150 pF, R = 330 Ω, air discharge | 2 | ||
| Peak pulse power dissipation | PPP | 600 | W | 10/1000 µs, 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 | °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:
SM6T27CA - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
sm6t27ca-etched.step/sm6t27ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm6t27ca.step/sm6t27ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (12 pp, sha256
32ee1ff8300e6eb5, retrieved 2026-10-16, 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).