component

1.5SMC400A

Public Made by Adom

by adom

DOWO TVS, 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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1.5SMC400A

DOWO · TVS · SMC

1.5SMC400A from DOWO, 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 (color band end) of the unidirectional TVS, standoff VRWM 342 V, breakdown VBR 380 to 420 V at IT = 1 mA, max clamping 548 V at IPP 2.72 A, 1500 W peak pulse power (10/1000 μs).
2 A passive Anode of the unidirectional TVS, forward voltage VF max 5.0 V at 100 A (VBR > 201 V) and peak forward surge current IFSM 200 A (8.3 ms half sine-wave).

Key specifications

Parameter Value
Manufacturer DOWO
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 380 420 V @IT = 1 mA 3
Maximum Reverse Leakage IR 1 uA @VRWM 3
Working Peak Reverse Voltage VRWM 342 V 3
Maximum Reverse Surge Current IPP 2.72 A 10/1000μs waveform 3
Maximum Clamping Voltage VC 548 V @IPP 3
Peak power dissipation PPP 1500 W 10/1000μs waveform, TA=25℃ 1
Power dissipation on infinite heatsink PD 6.5 W TL = 75 °C 1
Peak forward surge current IFSM 200 A 8.3 ms single half sine-wave, unidirectional only 1
Maximum instantaneous forward voltage VF 5 V at 100 A, unidirectional only; VF<5.0V for VBR>201V 1
Operating junction and storage temperature range TJ, TSTG -55 150 °C 1

CAD (KiCad official)

  • Symbol: 1.5SMC400A
  • Footprint: Diode_SMD:D_SMC
  • 3D model: SMC (KiCad packages3D, STEP)
  • 3D model files: 1-5smc400a-etched.step / 1-5smc400a-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); 1-5smc400a.step / 1-5smc400a.glb are the bare package body.

Provenance

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

  • Datasheet: DOWO datasheet (3 pp, sha256 7cbdff82a3e6d14d, retrieved 2026-10-27, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-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