component
SM15T39A
Public Made by Adomby adom
STMicroelectronics ESD And Surge Protection (TVS/ESD), SMC. 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
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownSM15T39A
STMicroelectronics · ESD And Surge Protection (TVS/ESD) · SMC
SM15T39A from STMicroelectronics, in a SMC. 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 | SMC |
| 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, 25 °C | 3 | ||
| Reverse leakage current at VRM, 85 °C | IRM | 1 | µA | at VRM, 85 °C | 3 | ||
| Breakdown voltage | VBR | 37.1 | 39 | 41 | V | at IBR = 1 mA | 3 |
| Clamping voltage, 10/1000 µs | VCL | 53.9 | V | 10/1000 µs, IPP = 28 A | 3 | ||
| Peak pulse current, 10/1000 µs | IPP | 28 | A | 10/1000 µs | 3 | ||
| Dynamic resistance, 10/1000 µs | RD | 0.461 | Ω | 10/1000 µs | 3 | ||
| Clamping voltage, 8/20 µs | VCL | 69.7 | V | 8/20 µs, IPP = 143 A | 3 | ||
| Peak pulse current, 8/20 µs | IPP | 143 | A | 8/20 µs | 3 | ||
| Dynamic resistance, 8/20 µs | RD | 0.2 | Ω | 8/20 µs | 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 | 1500 | 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 | °C | during 10 s | 2 | ||
| Breakdown voltage temperature coefficient | αT | 10 | 10-4/°C | 3 |
CAD (KiCad official)
- Symbol:
SM15T39A - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
sm15t39a-etched.step/sm15t39a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm15t39a.step/sm15t39a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (12 pp, sha256
3d4c7f4c7f31852c, retrieved 2026-10-15, 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).