component

SMBJ400A

Public Made by Adom

by adom

YFW ESD And Surge Protection (TVS/ESD), DO-214AA(SMB). 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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SMBJ400A

YFW · ESD And Surge Protection (TVS/ESD) · DO-214AA(SMB)

SMBJ400A from YFW, in a DO-214AA(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 Cathode passive Cathode terminal of the unipolar SMBJ400A (no CA suffix); for this part the datasheet gives reverse stand-off voltage VR = 400 V, breakdown VBR 447.00 V min to 494.00 V max at IT = 1 mA, and maximum clamping voltage VC 648 V at IPP 0.9 A.
2 Anode passive Anode terminal of the unipolar SMBJ400A (no CA suffix), which carries the surge current with the cathode; the datasheet rates the part for peak pulse power of 600 W (10/1000 µs waveform) and operating junction and storage temperature of -65 to +150 °C.

Key specifications

Parameter Value
Manufacturer YFW
Package DO-214AA(SMB)
Category Circuit Protection
Pins 2

CAD (KiCad official)

  • Symbol: SMBJ400A
  • Footprint: Diode_SMD:D_SMB
  • 3D model: DO-214AA(SMB) (KiCad packages3D, STEP)
  • 3D model files: smbj400a-etched.step / smbj400a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smbj400a.step / smbj400a.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: YFW datasheet (4 pp, sha256 15c4cd6b3a64c6dc, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-haiku-5-5 (vision), consensus claude-opus-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