component
SMDJ48A-AT
Public Made by Adomby adom
Brightking ESD And Surge Protection (TVS/ESD), SMC(DO-214AB). 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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SMDJ48A-AT
Brightking · ESD And Surge Protection (TVS/ESD) · SMC(DO-214AB)
SMDJ48A-AT from Brightking, in a SMC(DO-214AB). 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 | Brightking |
| Package | SMC(DO-214AB) |
| 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 | VBR | 53.3 | 58.9 | V | @IT 1 mA (unidirectional SMDJ48A-AT) | 3 | |
| Maximum clamping voltage | VC | 77.4 | V | @IPP 38.8 A | 3 | ||
| Reverse leakage | IR | 2 | μA | @VRWM 48 V | 3 | ||
| Peak pulse current | IPP | 38.8 | A | 10/1000μs waveform | 3 | ||
| Peak pulse power dissipation | PPPM | 3000 | W | 10/1000μs waveform (Note 1, Note 2, Fig.1) | 1 | ||
| Steady state power dissipation | PM(AV) | 6.5 | W | TA=50℃ (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 300 | A | 8.3ms single half sine-wave, JEDEC method (Note 3, Fig.6) | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Thermal resistance junction to lead | RθJL | 15 | ℃/W | Typical | 1 | ||
| Thermal resistance junction to ambient | RθJA | 75 | ℃/W | Typical; mounted on 8.0mm×8.0mm copper pads (Note 2) | 1 |
CAD (KiCad official)
- Symbol:
SMDJ48A-AT - Footprint:
Diode_SMD:D_SMC - 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files:
smdj48a-at-etched.step/smdj48a-at-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smdj48a-at.step/smdj48a-at.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Brightking datasheet (6 pp, sha256
b9d839ba1f239ec1, 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).
# SMDJ48A-AT
**Brightking** · ESD And Surge Protection (TVS/ESD) · SMC(DO-214AB)
SMDJ48A-AT from Brightking, in a SMC(DO-214AB). 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 | Brightking |
| Package | SMC(DO-214AB) |
| 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 | VBR | 53.3 | | 58.9 | V | @IT 1 mA (unidirectional SMDJ48A-AT) | 3 |
| Maximum clamping voltage | VC | | | 77.4 | V | @IPP 38.8 A | 3 |
| Reverse leakage | IR | | | 2 | μA | @VRWM 48 V | 3 |
| Peak pulse current | IPP | | | 38.8 | A | 10/1000μs waveform | 3 |
| Peak pulse power dissipation | PPPM | 3000 | | | W | 10/1000μs waveform (Note 1, Note 2, Fig.1) | 1 |
| Steady state power dissipation | PM(AV) | | | 6.5 | W | TA=50℃ (Fig.5) | 1 |
| Peak forward surge current | IFSM | | | 300 | A | 8.3ms single half sine-wave, JEDEC method (Note 3, Fig.6) | 1 |
| Operating junction and storage temperature range | TJ,TSTG | -55 | | 150 | ℃ | | 1 |
| Thermal resistance junction to lead | RθJL | | 15 | | ℃/W | Typical | 1 |
| Thermal resistance junction to ambient | RθJA | | 75 | | ℃/W | Typical; mounted on 8.0mm×8.0mm copper pads (Note 2) | 1 |
## CAD (KiCad official)
- Symbol: `SMDJ48A-AT`
- Footprint: `Diode_SMD:D_SMC`
- 3D model: SMC(DO-214AB) (KiCad packages3D, STEP)
- 3D model files: `smdj48a-at-etched.step` / `smdj48a-at-etched.glb` carry the MPN laser-etched on the die in a toggleable `Adom.LaserEtch` group (Fusion-ready); `smdj48a-at.step` / `smdj48a-at.glb` are the bare package body.
## Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- **Datasheet:** [Brightking datasheet](https://jlcpcb.com/api/file/downloadByFileSystemAccessId/8588912952308584448) (6 pp, sha256 `b9d839ba1f239ec1`, 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/smdj48a-at-datasheet.pdf)