component
SMCJ400A
Public Made by Adomby adom
JUXING ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, 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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Contents
README
markdownSMCJ400A
JUXING · ESD And Surge Protection (TVS/ESD) · SMC
SMCJ400A from JUXING, 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 | Cathode | passive | Cathode terminal of the unidirectional SMCJ400A transient voltage suppressor, identified as pin 1 in the PINNING table for the SMC outline. |
| 2 | Anode | passive | Anode terminal of the unidirectional SMCJ400A transient voltage suppressor, identified as pin 2 in the PINNING table for the SMC outline. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | JUXING |
| 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 |
|---|---|---|---|---|---|---|---|
| Peak Pulse Power Dissipation | PPPM | 1500 | W | Tp=1ms, TA=25°C (Note 1) | 1 | ||
| Peak Forward Surge Current | IFSM | 200 | A | 8.3ms single half sine wave superimposed on rated load (JEDEC method), unidirectional only (Note 2,3) | 1 | ||
| Maximum Instantaneous Forward Voltage | VF | 3.5 | V | at 100A, unidirectional only (Note 4); single die parts (Note 3) | 1 | ||
| Reverse Stand-off Voltage | VRMW | 400 | V | 2 | |||
| Breakdown Voltage (min) | VBR | 447 | V | IT = 1 mA | 2 | ||
| Breakdown Voltage (max) | VBR | 494 | V | IT = 1 mA | 2 | ||
| Maximum Clamping Voltage | VC | 648 | V | at IPP = 2.3 A | 2 | ||
| Maximum Reverse Leakage | IR | 1 | µA | 2 | |||
| VBR Temperature Coefficient | αT | 0.1 | % | typical value; VBR @ TJ = VBR@25°C x (1+αT x (TJ - 25)) | 1 | ||
| Operating Junction and Storage Temperature Range | Tj, TSTG | -55 | 150 | ℃ | 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 | tin | terminal fnish material is tin(Sn) (IPC/JEDEC J-STD-609A.01) | 1 |
CAD (KiCad official)
- Symbol:
SMCJ400A - Footprint:
Diode_SMD:D_SMC - 3D model: SMC (KiCad packages3D, STEP)
- 3D model files:
smcj400a-etched.step/smcj400a-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);smcj400a.step/smcj400a.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: JUXING datasheet (4 pp, sha256
2aadbc84ce310c24, retrieved 2026-10-22, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-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).