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SMAJ28A AI Analysis:
Datasheet, Specs, Alternatives & ECAD

AI summary

SMAJ28A product

SMAJ28A

Transient Voltage Suppressors (TVS)

TVS Diode400WSMAUnidirectional

The SMAJ28A is a 400W unidirectional TVS diode designed for circuit protection in compact surface-mount applications.

Best for

  • I/O interface protection
  • AC/DC power supply transient suppression
  • RS232/RS485 signal line protection

Avoid if

  • Applications requiring bidirectional protection (use the 'C' suffix version instead)

Check before use

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

Key specifications

Peak Pulse Power
400 W
Reverse Stand-off Voltage
28 V
Clamping Voltage
45.4 V
Polarity
Unidirectional

Compliance & Environment

RoHS
-
REACH
-
MSL
1
ECCN
-
HTSUS
-

Application

Power Supply ProtectionSignal Line Protection

Datasheet

b65fd5cb04baa1b4ce3b6048cb698f52_2211161800_Shenzhen-Jinkaisheng-Elec-SMAJ28A_C5267297.pdf

800 KB

Datasheet AI

CAD Models

Download ECAD models for SMAJ28A: 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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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 SMAJ28A is a 400W unidirectional Transient Voltage Suppressor (TVS) diode housed in a standard SMA (DO-214AC) surface-mount package.