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SMAJ12A AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

SMAJ12A product

SMAJ12A

Circuit Protection

TVS Diode400WSMA12V

The SMAJ12A is a 400W unidirectional TVS diode in an SMA package, ideal for protecting sensitive electronics from voltage transients.

Best for

  • I/O interface protection
  • AC/DC power supply surge protection
  • Signal line protection (RS232/RS485)

Avoid if

  • The application requires bidirectional protection (use SMAJ12CA instead)

Check before use

  • Verify the transient energy levels in your circuit do not exceed the 400W peak pulse power rating.

Key specifications

Reverse Stand-Off Voltage
12 V
Peak Pulse Power
400 W
Clamping Voltage
19.9 V

Compliance & Environment

RoHS
-
REACH
-
MSL
-
ECCN
-
HTSUS
-

Application

Power Supply ProtectionSignal Line Protection

Datasheet

191e9de9ac82a4d9888c6dc213764bdc_2304140030_DOWO-SMAJ12A_C283876.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SMAJ12A: KiCad symbol & footprint, Altium footprint, PCB footprint, and 3D model.

EDA Symbol
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PCB Footprint
Land pattern for PCB layout
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3D Model
STEP file for mechanical design
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KiCad Library
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Where to Buy

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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 SMAJ12A is a 400W transient voltage suppressor (TVS) diode designed for surface-mount applications, specifically for protecting circuits against voltage spikes.