component
SMBJ20AX
Public Made by Adomby adom
Shenzhen JingYang ESD And Surge Protection (TVS/ESD), SMB. Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownSMBJ20AX
Shenzhen JingYang · ESD And Surge Protection (TVS/ESD) · SMB
SMBJ20AX from Shenzhen JingYang, in a SMB. 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 | Shenzhen JingYang |
| Package | SMB |
| 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 | 22.2 | 25.5 | V | @ IT = 1 mA | 2 | |
| Reverse Leakage Current | IR | 5 | uA | @ VRWM | 2 | ||
| Maximum Clamping Voltage | VC | 32.4 | V | @ IPP | 2 | ||
| Maximum Peak Pulse Current | IPP | 18.5 | A | 2 | |||
| Peak Power Dissipation | PPK | 600 | W | Tj = 25℃, Tp = 1ms | 1 | ||
| Peak Forward Surge Current | IFSM | 100 | A | 8.3ms single half sine-wave | 1 | ||
| Lead Soldering Temperature | TL | 260 | °C | 10 sec. | 1 | ||
| Operating Temperature Range | TJ | -55 | 155 | °C | 1 | ||
| Storage Temperature Range | TSTG | -55 | 175 | °C | 1 | ||
| Working Peak Reverse Voltage | VRWM | 20 | V | 2 | |||
| Test Current | IT | 1 | mA | 2 |
CAD (KiCad official)
- Symbol:
SMBJ20AX - Footprint:
Diode_SMD:D_SMB - 3D model: SMB (KiCad packages3D, STEP)
- 3D model files:
smbj20ax-etched.step/smbj20ax-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smbj20ax.step/smbj20ax.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen JingYang datasheet (5 pp, sha256
4d8fa9f9434c78ef, retrieved 2026-10-22, 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).