ProjectsPricingInsights

SM8S40A AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

SM8S40A product

SM8S40A

Transient Voltage Suppressors (TVS)

AutomotiveTVS DiodeHigh Power

The SM8S40A is a high-power, AEC-Q101 qualified TVS diode designed for automotive load dump protection, offering 6600W peak pulse power and 175°C thermal stability.

Best for

  • Automotive load dump protection
  • Inductive load switching protection

Avoid if

  • Applications requiring low-power or small-form-factor protection

Check before use

  • Thermal management on the PCB
  • Pulse waveform characteristics

Key specifications

Stand-off Voltage
40 V
Peak Pulse Power
6600 W
Clamping Voltage
64.5 V

Compliance & Environment

RoHS
ROHS3 Compliant
REACH
REACH Unaffected
MSL
1 (Unlimited)
ECCN
EAR99
HTSUS
8541.10.0080

Application

AutomotivePower Protection

Datasheet

2405301615_DOWO-SM8S40A_C314432.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SM8S40A: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
Schematic symbol for your EDA tool
Get Files
PCB Footprint
Land pattern for PCB layout
Get Files
3D Model
STEP file for mechanical design
Get Files
KiCad Library
Verified KiCad 8 symbol, footprint, and 3D model
Generate library

Login required · CAD models billed separately as an add-on

Where to Buy

Real-time and catalog pricing from verified distributors

Live prices updated on demand · Catalog (~) prices may differ

Alternative components

Alternatives are being enriched. Analyze this part in PartGenie for the latest matches.

Design and risk insights

Questions & answers

The SM8S40A is a surface-mount transient voltage suppressor (TVS) diode in a DO-218AB package, specifically designed to protect sensitive electronics from voltage transients in automotive environments.