component
SMAJ400CA
Public Made by Adomby adom
DOWO ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). 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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SMAJ400CA
DOWO · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)
SMAJ400CA from DOWO, in a SMA(DO-214AC). 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 | DOWO |
| Package | SMA(DO-214AC) |
| 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 (bidirectional, 5% tolerance device) | VBR | 447 | 494 | V | @IT = 1 mA | 4 | |
| Maximum reverse leakage | IR | 1 | uA | @VRWM | 4 | ||
| Maximum clamping voltage | VC | 648 | V | @IPP | 4 | ||
| Maximum reverse surge current | IPP | 0.62 | A | 4 | |||
| Working peak reverse voltage | VRWM | 400 | V | 4 | |||
| VBR tolerance (suffix A = 5% tolerance device) | -5 | 5 | % | Suffix 'A' denotes 5% tolerance device | 3 | ||
| Peak power dissipation with a 10/1000 μs waveform | PPP | 400 | W | 10/1000μs waveform | 1 | ||
| Power dissipation on infinite heatsink | PD | 1 | W | TL = 75 °C | 1 | ||
| Operating junction and storage temperature range | TJ, TSTG | -55 | 150 | °C | 1 |
CAD (KiCad official)
- Symbol:
SMAJ400CA - Footprint:
Diode_SMD:D_SMA - 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files:
smaj400ca-etched.step/smaj400ca-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smaj400ca.step/smaj400ca.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: DOWO datasheet (4 pp, sha256
266afd031a0a5ac7, retrieved 2026-10-21, 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).
# SMAJ400CA
**DOWO** · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)
SMAJ400CA from DOWO, in a SMA(DO-214AC). 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 | DOWO |
| Package | SMA(DO-214AC) |
| 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 (bidirectional, 5% tolerance device) | VBR | 447 | | 494 | V | @IT = 1 mA | 4 |
| Maximum reverse leakage | IR | | | 1 | uA | @VRWM | 4 |
| Maximum clamping voltage | VC | | | 648 | V | @IPP | 4 |
| Maximum reverse surge current | IPP | | | 0.62 | A | | 4 |
| Working peak reverse voltage | VRWM | | | 400 | V | | 4 |
| VBR tolerance (suffix A = 5% tolerance device) | | -5 | | 5 | % | Suffix 'A' denotes 5% tolerance device | 3 |
| Peak power dissipation with a 10/1000 μs waveform | PPP | | | 400 | W | 10/1000μs waveform | 1 |
| Power dissipation on infinite heatsink | PD | | | 1 | W | TL = 75 °C | 1 |
| Operating junction and storage temperature range | TJ, TSTG | -55 | | 150 | °C | | 1 |
## CAD (KiCad official)
- Symbol: `SMAJ400CA`
- Footprint: `Diode_SMD:D_SMA`
- 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
- 3D model files: `smaj400ca-etched.step` / `smaj400ca-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smaj400ca.step` / `smaj400ca.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [DOWO datasheet](docs/smaj400ca-datasheet.pdf) (4 pp, sha256 `266afd031a0a5ac7`, retrieved 2026-10-21, 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/smaj400ca-datasheet.pdf)