component

SMAJ400CA

Public Made by Adom

by adom

DOWO ESD And Surge Protection (TVS/ESD), SMA(DO-214AC). Unpolarised two-terminal part: the datasheet prints no pin numbers, so pins 1 and 2 follow the library convention, 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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SMAJ400CA

DOWO · ESD And Surge Protection (TVS/ESD) · SMA(DO-214AC)

SMAJ400CA from DOWO, in a SMA(DO-214AC). 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 DOWO
Package SMA(DO-214AC)
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 (bidirectional, 5% tolerance device) VBR 447 494 V @IT = 1 mA 4
Maximum reverse leakage IR 1 uA @VRWM 4
Maximum clamping voltage VC 648 V @IPP 4
Maximum reverse surge current IPP 0.62 A 4
Working peak reverse voltage VRWM 400 V 4
VBR tolerance (suffix A = 5% tolerance device) -5 5 % Suffix 'A' denotes 5% tolerance device 3
Peak power dissipation with a 10/1000 μs waveform PPP 400 W 10/1000μs waveform 1
Power dissipation on infinite heatsink PD 1 W TL = 75 °C 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: SMAJ400CA
  • Footprint: Diode_SMD:D_SMA
  • 3D model: SMA(DO-214AC) (KiCad packages3D, STEP)
  • 3D model files: smaj400ca-etched.step / smaj400ca-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); smaj400ca.step / smaj400ca.glb are the bare package body.

Provenance

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

  • Datasheet: DOWO datasheet (4 pp, sha256 266afd031a0a5ac7, retrieved 2026-10-21, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary cathode-band convention (convention), consensus off (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