component
SMBJ78A-E3
Public Made by Adomby adom
Vishay Intertech 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.
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SMBJ78A-E3
Vishay Intertech · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)
SMBJ78A-E3 from Vishay Intertech, 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 | Vishay Intertech |
| 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 (min/max) | VBR | 86.7 | 95.8 | V | at IT = 1.0 mA | 2 | |
| Maximum reverse leakage | ID | 1 | μA | at VWM = 78 V | 2 | ||
| Maximum peak pulse surge current | IPPM | 4.8 | A | 10/1000 µs waveform (footnote 2) | 2 | ||
| Maximum clamping voltage | VC | 126 | V | at IPPM | 2 | ||
| Peak pulse power dissipation | PPPM | 600 | W | 10/1000 µs waveform (footnotes 1, 2) | 1 | ||
| Peak forward surge current (uni-directional only) | IFSM | 100 | A | 8.3 ms single half sine-wave | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 | ||
| Reverse stand-off voltage | VWM | 78 | V | 2 | |||
| Typical thermal resistance, junction to ambient | RθJA | 100 | °C/W | mounted on minimum recommended pad layout (footnote 1) | 3 | ||
| Typical thermal resistance, junction to lead | RθJL | 20 | °C/W | junction to lead | 3 |
CAD (KiCad official)
- Symbol:
SMBJ78A-E3 - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj78a-e3-etched.step/smbj78a-e3-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj78a-e3.step/smbj78a-e3.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Vishay Intertech datasheet (5 pp, sha256
13281d4fec098228, 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).
# SMBJ78A-E3
**Vishay Intertech** · ESD And Surge Protection (TVS/ESD) · SMB(DO-214AA)
SMBJ78A-E3 from Vishay Intertech, 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 | Vishay Intertech |
| 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 (min/max) | VBR | 86.7 | | 95.8 | V | at IT = 1.0 mA | 2 |
| Maximum reverse leakage | ID | | | 1 | μA | at VWM = 78 V | 2 |
| Maximum peak pulse surge current | IPPM | | | 4.8 | A | 10/1000 µs waveform (footnote 2) | 2 |
| Maximum clamping voltage | VC | | | 126 | V | at IPPM | 2 |
| Peak pulse power dissipation | PPPM | | | 600 | W | 10/1000 µs waveform (footnotes 1, 2) | 1 |
| Peak forward surge current (uni-directional only) | IFSM | | | 100 | A | 8.3 ms single half sine-wave | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 | | 150 | °C | | 1 |
| Reverse stand-off voltage | VWM | | 78 | | V | | 2 |
| Typical thermal resistance, junction to ambient | RθJA | | 100 | | °C/W | mounted on minimum recommended pad layout (footnote 1) | 3 |
| Typical thermal resistance, junction to lead | RθJL | | 20 | | °C/W | junction to lead | 3 |
## CAD (KiCad official)
- Symbol: `SMBJ78A-E3`
- Footprint: `Diode_SMD:D_SMB`
- 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files: `smbj78a-e3-etched.step` / `smbj78a-e3-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smbj78a-e3.step` / `smbj78a-e3.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Vishay Intertech datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588938382978256896) (5 pp, sha256 `13281d4fec098228`, retrieved 2026-10-15, tier: lcsc)
- **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/smbj78a-e3-datasheet.pdf)