component
SMBJ28CA-TR
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.
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SMBJ28CA-TR
STMicroelectronics · TVS · SMB(DO-214AA)
SMBJ28CA-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 |
|---|---|---|---|---|---|---|---|
| Peak pulse power dissipation | PPP | 600 | W | Tj initial = Tamb, 25 °C (10/1000 µs) | 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 | ||
| Thermal resistance junction to leads | Rth(j-l) | 20 | °C/W | 2 | |||
| Thermal resistance junction to ambient | Rth(j-a) | 100 | °C/W | on recommended pad layout | 2 | ||
| Leakage current at VRM | IRM | 0.2 | µA | VRM = 28 V, 25 °C | 3 | ||
| Leakage current at VRM | IRM | 1 | µA | VRM = 28 V, 85 °C | 3 | ||
| Stand-off voltage | VRM | 28 | V | 3 | |||
| Breakdown voltage | VBR | 31.1 | 32.7 | V | @ IR = 1 mA, pulse test tp < 50 ms | 3 | |
| Clamping voltage 10/1000 µs | VCL | 45.4 | V | @ IPP = 13.8 A, 10/1000 µs | 3 | ||
| Dynamic resistance 10/1000 µs | RD | 0.802 | Ω | 10/1000 µs | 3 | ||
| Clamping voltage 8/20 µs | VCL | 59 | V | @ IPP = 68 A, 8/20 µs | 3 | ||
| Dynamic resistance 8/20 µs | RD | 0.363 | Ω | 8/20 µs | 3 | ||
| Voltage temperature coefficient | αT | 9.8 | 10-4/°C | 3 |
CAD (KiCad official)
- Symbol:
SMBJ28CA-TR - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj28ca-tr-etched.step/smbj28ca-tr-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj28ca-tr.step/smbj28ca-tr.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: STMicroelectronics datasheet (10 pp, sha256
9662412d67b9544e, 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).
# SMBJ28CA-TR
**STMicroelectronics** · TVS · SMB(DO-214AA)
SMBJ28CA-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 |
|---|---|---|---|---|---|---|---|
| Peak pulse power dissipation | PPP | | | 600 | W | Tj initial = Tamb, 25 °C (10/1000 µs) | 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 |
| Thermal resistance junction to leads | Rth(j-l) | | 20 | | °C/W | | 2 |
| Thermal resistance junction to ambient | Rth(j-a) | | 100 | | °C/W | on recommended pad layout | 2 |
| Leakage current at VRM | IRM | | | 0.2 | µA | VRM = 28 V, 25 °C | 3 |
| Leakage current at VRM | IRM | | | 1 | µA | VRM = 28 V, 85 °C | 3 |
| Stand-off voltage | VRM | | 28 | | V | | 3 |
| Breakdown voltage | VBR | 31.1 | | 32.7 | V | @ IR = 1 mA, pulse test tp < 50 ms | 3 |
| Clamping voltage 10/1000 µs | VCL | | | 45.4 | V | @ IPP = 13.8 A, 10/1000 µs | 3 |
| Dynamic resistance 10/1000 µs | RD | | | 0.802 | Ω | 10/1000 µs | 3 |
| Clamping voltage 8/20 µs | VCL | | | 59 | V | @ IPP = 68 A, 8/20 µs | 3 |
| Dynamic resistance 8/20 µs | RD | | | 0.363 | Ω | 8/20 µs | 3 |
| Voltage temperature coefficient | αT | | | 9.8 | 10-4/°C | | 3 |
## CAD (KiCad official)
- Symbol: `SMBJ28CA-TR`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `smbj28ca-tr-etched.step` / `smbj28ca-tr-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj28ca-tr.step` / `smbj28ca-tr.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/smbj28ca-tr.pdf) (10 pp, sha256 `9662412d67b9544e`, 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/smbj28ca-tr-datasheet.pdf)