component

SMCJ400A

Public Made by Adom

by adom

JUXING ESD And Surge Protection (TVS/ESD), SMC. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Made with KiCad 10.0 · needs KiCad 10.0 or later to open · KiCad file format 20260206
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docs Publish 0.1.0 · Ray 7d ago
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README.md Publish 0.1.0 · Ray 7d ago
smcj400a-etched.glb Publish 0.1.0 · Ray 7d ago
smcj400a-etched.step smcj400a: factory component page (tier=lcsc) · Ray 7d ago
smcj400a-hero.glb smcj400a: hero GLB from the etched model (keeps the MPN mark) · Ray 7d ago
smcj400a-hero.overlay.json Publish 0.1.0 · Ray 7d ago
smcj400a.glb Publish 0.1.0 · Ray 7d ago
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smcj400a.step Publish 0.1.0 · Ray 7d ago

SMCJ400A

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.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smcj400a.step / smcj400a.glb are 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, primary claude-haiku-5-5 (text), consensus claude-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).

Datasheet PDF