component
SMCJ20AX
Public Made by Adomby adom
Shenzhen JingYang ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models 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 |
| smcj20ax-etched.glb | 10d ago |
| smcj20ax-etched.step | 10d ago |
| smcj20ax-hero.glb | 10d ago |
| smcj20ax-hero.overlay.json | 10d ago |
| smcj20ax.glb | 10d ago |
| smcj20ax.kicad_mod | 10d ago |
| smcj20ax.kicad_sym | 10d ago |
| smcj20ax.lbr | 10d ago |
| smcj20ax.step | 10d ago |
SMCJ20AX
Shenzhen JingYang · ESD And Surge Protection (TVS/ESD) · SMC
SMCJ20AX from Shenzhen JingYang, in a SMC. 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 (marked by the cathode band) of the unidirectional SMCJ20A TVS, connected to the protected line, with 20V reverse stand-off, 22.2V to 25.5V breakdown at 1.0mA and 32.4V maximum clamping at 46.3A peak pulse current. |
| 2 | A | passive | Anode of the unidirectional SMCJ20A TVS, normally connected to ground or the return, with 1500W peak pulse power rating on a 10/1000us waveform. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Shenzhen JingYang |
| Package | SMC |
| 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 = 1.0 mA | 2 | |
| Reverse Stand-Off Voltage | VRWM | 20 | V | 2 | |||
| Maximum Clamping Voltage | VC | 32.4 | V | @ IPP = 46.3 A | 2 | ||
| Peak Pulse Current | IPP | 46.3 | A | 10/1000 us waveform | 2 | ||
| Reverse Leakage | IR | 5 | uA | @ VRWM | 2 | ||
| Peak Pulse Power Dissipation | PPPM | 1500 | W | 10/1000 us waveform | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine-wave superimposed on rated load | 1 | ||
| Operating Junction Temperature Range | TJ | -55 | 150 | °C | 1 | ||
| Storage Temperature Range | TSTG | -55 | 150 | °C | 1 |
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 | (0.03mm thick) Copper Pads to each terminal. | 1 |
CAD (KiCad official)
- Symbol:
SMCJ20AX - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
smcj20ax-etched.step/smcj20ax-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj20ax.step/smcj20ax.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Shenzhen JingYang datasheet (7 pp, sha256
b6b18ec56331d954, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-sonnet-5-5(text), consensusclaude-sonnet-5-5(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).