component
1.5SMC400A
Public Made by Adomby adom
DOWO TVS, 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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README
markdown1.5SMC400A
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.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);1-5smc400a.step/1-5smc400a.glbare 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, primaryclaude-sonnet-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).