component
SMBJ12CA-TR
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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PCB Footprint
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Datasheet
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README
markdownSMBJ12CA-TR
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)
SMBJ12CA-TR 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 | at VRM, Tj = 25 °C | 3 | ||
| Reverse leakage current at VRM, 85 °C | IRM | 1 | µA | at VRM, Tj = 85 °C | 3 | ||
| Breakdown voltage | VBR | 13.3 | 14 | V | at IR = 1 mA | 3 | |
| Clamping voltage, 10/1000 µs | VCL | 19.9 | V | 10/1000 µs waveform, IPP = 31 A | 3 | ||
| Peak pulse current, 10/1000 µs | IPP | 31 | A | 10/1000 µs waveform | 3 | ||
| Dynamic resistance, 10/1000 µs | RD | 0.168 | Ω | 10/1000 µs waveform | 3 | ||
| Clamping voltage, 8/20 µs | VCL | 25.3 | V | 8/20 µs waveform, IPP = 157 A | 3 | ||
| Peak pulse current, 8/20 µs | IPP | 157 | A | 8/20 µs waveform | 3 | ||
| Dynamic resistance, 8/20 µs | RD | 0.068 | Ω | 8/20 µs waveform | 3 | ||
| Peak pulse power dissipation | PPP | 600 | W | Tj initial = Tamb | 2 | ||
| Operating junction temperature range | Tj | -55 | 150 | °C | 2 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10 s | 2 | ||
| Junction to leads thermal resistance | Rth(j-l) | 20 | °C/W | junction to leads | 2 | ||
| Junction to ambient thermal resistance | Rth(j-a) | 100 | °C/W | junction to ambient on printed circuit on recommended pad layout | 2 | ||
| Stand-off voltage | VRM | 12 | V | reverse stand-off voltage (SMBJ12CA) | 3 | ||
| Temperature coefficient of VBR/VCL | αT | 8.3 | 10-4/°C | VBR at TJ = VBR at 25 °C x (1 + αT x (TJ - 25)) | 3 |
CAD (KiCad official)
- Symbol:
SMBJ12CA-TR - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj12ca-tr-etched.step/smbj12ca-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj12ca-tr.step/smbj12ca-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (11 pp, sha256
6d6fe330cf55be51, retrieved 2026-10-15, tier: lcsc) - 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).