component
SM15T56CAY
Public Made by Adomby adom
STMicroelectronics TVS, SMC. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
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SM15T56CAY
STMicroelectronics · TVS · SMC
SM15T56CAY 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse voltage ISO 10605 contact discharge (C=330 pF, R=330 Ω) | VPP | 30 | kV | ISO 10605 C=330 pF, R=330 Ω, contact discharge | 2 | ||
| Peak pulse voltage ISO 10605 air discharge (C=330 pF, R=330 Ω) | VPP | 30 | kV | ISO 10605 C=330 pF, R=330 Ω, air discharge | 2 | ||
| Peak pulse voltage ISO 10605 contact discharge (C=150 pF, R=330 Ω) | VPP | 30 | kV | ISO 10605 C=150 pF, R=330 Ω, contact discharge | 2 | ||
| Peak pulse voltage ISO 10605 air discharge (C=150 pF, R=330 Ω) | VPP | 30 | kV | ISO 10605 C=150 pF, R=330 Ω, air discharge | 2 | ||
| Peak pulse power dissipation | PPP | 1500 | W | Tj initial = Tamb, 10/1000 µs | 2 | ||
| Storage temperature range | Tstg | -65 | 150 | °C | 2 | ||
| Operating junction temperature range | Tj | -40 | 150 | °C | 2 | ||
| Maximum lead temperature for soldering | TL | 260 | °C | during 10 s | 2 | ||
| Leakage current at VRM, 25 °C | IRM | 0.2 | µA | VRM = 48 V, Tamb = 25 °C | 3 | ||
| Leakage current at VRM, 85 °C | IRM | 1 | µA | VRM = 48 V, 85 °C | 3 | ||
| Stand-off voltage | VRM | 48 | V | 3 | |||
| Breakdown voltage | VBR | 53.3 | 56 | 58.9 | V | @ IR = 1 mA, pulse test tp < 50 ms | 3 |
| Clamping voltage 10/1000 µs | VCL | 77.4 | V | @ IPP = 20 A, 10/1000 µs | 3 | ||
| Dynamic resistance 10/1000 µs | RD | 0.925 | Ω | 10/1000 µs | 3 | ||
| Clamping voltage 8/20 µs | VCL | 100 | V | @ IPP = 100 A, 8/20 µs | 3 | ||
| Dynamic resistance 8/20 µs | RD | 0.411 | Ω | 8/20 µs | 3 | ||
| Voltage temperature coefficient | αT | 10.3 | 10-4/°C | 3 |
CAD (KiCad official)
- Symbol:
SM15T56CAY - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
sm15t56cay-etched.step/sm15t56cay-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);sm15t56cay.step/sm15t56cay.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (12 pp, sha256
c929f08172c291d2, 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).
# SM15T56CAY
**STMicroelectronics** · TVS · SMC
SM15T56CAY 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 |
|---|---|---|---|---|---|---|---|
| Peak pulse voltage ISO 10605 contact discharge (C=330 pF, R=330 Ω) | VPP | | | 30 | kV | ISO 10605 C=330 pF, R=330 Ω, contact discharge | 2 |
| Peak pulse voltage ISO 10605 air discharge (C=330 pF, R=330 Ω) | VPP | | | 30 | kV | ISO 10605 C=330 pF, R=330 Ω, air discharge | 2 |
| Peak pulse voltage ISO 10605 contact discharge (C=150 pF, R=330 Ω) | VPP | | | 30 | kV | ISO 10605 C=150 pF, R=330 Ω, contact discharge | 2 |
| Peak pulse voltage ISO 10605 air discharge (C=150 pF, R=330 Ω) | VPP | | | 30 | kV | ISO 10605 C=150 pF, R=330 Ω, air discharge | 2 |
| Peak pulse power dissipation | PPP | | | 1500 | W | Tj initial = Tamb, 10/1000 µs | 2 |
| Storage temperature range | Tstg | -65 | | 150 | °C | | 2 |
| Operating junction temperature range | Tj | -40 | | 150 | °C | | 2 |
| Maximum lead temperature for soldering | TL | | | 260 | °C | during 10 s | 2 |
| Leakage current at VRM, 25 °C | IRM | | | 0.2 | µA | VRM = 48 V, Tamb = 25 °C | 3 |
| Leakage current at VRM, 85 °C | IRM | | | 1 | µA | VRM = 48 V, 85 °C | 3 |
| Stand-off voltage | VRM | | 48 | | V | | 3 |
| Breakdown voltage | VBR | 53.3 | 56 | 58.9 | V | @ IR = 1 mA, pulse test tp < 50 ms | 3 |
| Clamping voltage 10/1000 µs | VCL | | 77.4 | | V | @ IPP = 20 A, 10/1000 µs | 3 |
| Dynamic resistance 10/1000 µs | RD | | 0.925 | | Ω | 10/1000 µs | 3 |
| Clamping voltage 8/20 µs | VCL | | 100 | | V | @ IPP = 100 A, 8/20 µs | 3 |
| Dynamic resistance 8/20 µs | RD | | 0.411 | | Ω | 8/20 µs | 3 |
| Voltage temperature coefficient | αT | | 10.3 | | 10-4/°C | | 3 |
## CAD (KiCad official)
- Symbol: `SM15T56CAY`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC (KiCad packages3D, STEP)
- 3D model files: `sm15t56cay-etched.step` / `sm15t56cay-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `sm15t56cay.step` / `sm15t56cay.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [STMicroelectronics datasheet](https://www.st.com/resource/en/datasheet/sm15t56cay.pdf) (12 pp, sha256 `c929f08172c291d2`, retrieved 2026-10-22, tier: manufacturer)
- **Extractor:** parts-factory `2.0.0` / `extract_pins`, primary `cathode-band convention` (convention), consensus `off` (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).
[Datasheet PDF](docs/sm15t56cay-datasheet.pdf)