component
SMBJ20CA-AT
Public Made by Adomby adom
Brightking Elec (TAIWAN) TVS, SMB(DO-214AA). Pinout reviewed by a person against the datasheet, KiCad symbol/footprint/3D.
Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
| Name | Last updated |
|---|---|
| docs | 10d ago |
| viewers | 10d ago |
| package.json | 10d ago |
| page.json | 10d ago |
| README.md | 10d ago |
| smbj20ca-at-etched.glb | 10d ago |
| smbj20ca-at-etched.step | 10d ago |
| smbj20ca-at-hero.glb | 10d ago |
| smbj20ca-at-hero.overlay.json | 10d ago |
| smbj20ca-at.glb | 10d ago |
| smbj20ca-at.kicad_mod | 10d ago |
| smbj20ca-at.kicad_sym | 10d ago |
| smbj20ca-at.lbr | 10d ago |
| smbj20ca-at.step | 10d ago |
SMBJ20CA-AT
Brightking Elec (TAIWAN) · TVS · SMB(DO-214AA)
SMBJ20CA-AT from Brightking Elec (TAIWAN), 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 | Terminal 1 | passive | Bidirectional (CA) TVS terminal with no cathode band, interchangeable with the other terminal, for VRWM 20.0V, VBR 22.20~24.50V at 1mA and VC 32.4V at 18.6A IPP. |
| 2 | Terminal 2 | passive | Bidirectional (CA) TVS terminal with no cathode band, interchangeable with the other terminal, for VRWM 20.0V, VBR 22.20~24.50V at 1mA and VC 32.4V at 18.6A IPP. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Brightking Elec (TAIWAN) |
| 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 | PPPM | 600 | W | 10/1000μs waveform (Note1, Note2, Fig.1) | 1 | ||
| Breakdown voltage | VBR | 22.2 | 24.5 | V | @IT = 1 mA (SMBJ20CA-AT bidirectional, test current IT 1 mA) | 2 | |
| Maximum clamping voltage | VC | 32.4 | V | @IPP = 18.6 A | 2 | ||
| Reverse leakage current | IR | 1 | μA | @VRWM = 20.0 V | 2 | ||
| Reverse stand-off voltage | VRWM | 20 | V | Bidirectional (CA) variant, as printed in the characteristics table | 2 | ||
| Steady state power dissipation | PM(AV) | 5 | W | TA=50℃ (Fig.5) | 1 | ||
| Peak forward surge current | IFSM | 100 | A | 8.3ms single half sine-wave, superimposed on rated load (JEDEC Method) (Note3, Fig.6) | 1 | ||
| Operating junction and storage temperature range | TJ,TSTG | -55 | 150 | ℃ | 1 | ||
| Typical thermal resistance junction to lead | RθJL | 20 | ℃/W | 1 | |||
| Typical thermal resistance junction to ambient | RθJA | 100 | ℃/W | Mounted on 5.0mm×5.0mm (0.03mm thick) copper pads to each terminal (Note 2) | 1 | ||
| Peak reflow soldering temperature (Pb-free) | TP | 260 | ℃ | Pb-free assembly reflow profile, peak temperature | 6 |
Materials and finish
As the datasheet states them (page.json metadata.appearance; the 3D model's colours follow it).
| Part | Material | Colour / plating | Datasheet says | Page |
|---|---|---|---|---|
| contacts | copper | 2. Mounted on 5.0mm×5.0mm (0.03mm thick) copper pads to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
SMBJ20CA-AT - Footprint:
Diode_SMD:D_SMB - 3D model: SMB(DO-214AA) (KiCad packages3D, STEP)
- 3D model files:
smbj20ca-at-etched.step/smbj20ca-at-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj20ca-at.step/smbj20ca-at.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Brightking Elec (TAIWAN) datasheet (7 pp, sha256
a2bc93a3b45c5e72, retrieved 2026-10-22, tier: lcsc) - Extractor:
ds2sf(Claude). Every pin and dimension is cited to a datasheet page; it refuses to fabricate. - CAD: KiCad official libraries (CC-BY-SA 4.0).