Product Description

SMAJ12A is a surface mount transient voltage suppression diode. Its main function is to provide ESD protection, surge suppression and transient voltage protection for electronic equipment. Due to its extremely fast response characteristics, the device can quickly discharge abnormally large currents to the ground to ensure that precision electronic components are not damaged.

Main Technical Parameters

  • Working voltage: 12V
  • Breakdown voltage: 13.3V-14.7V
  • Peak pulse current: up to 20.1A (8/20μs waveform)
  • Maximum clamping voltage: 19.9V
  • Power level: 400W
  • Polarity: unidirectional

Features and Advantages

  • Low profile package
  • Ideal for automated placement
  • 400 Watt peak pulse power capability with a 10/1000μs waveform
  • For surface mounted applicatons to optimize board space
  • Excellent clamping capability
  • Very fast response time
  • Low incremental surge resistance

Working Principle

SMAJ12A is in a high impedance state and is almost non-conductive under normal voltage. When the external transient voltage exceeds its breakdown voltage, it will immediately conduct and bypass the surge current to the ground, thereby protecting the subsequent circuit. It should be noted that it is unidirectional and is only applicable to DC circuits or signal lines with clear polarity.

Typical Applications

  • Power supply protection
  • Automotive application
  • Industrial application
  • Power management

Product Line

To explore this product in more detail, please visit our website via the following link：

https://en.semiware.com/product-general-tvs/smaj12a

About semiware
Semiware has a comprehensive product lineup of circuit protection device products. The company leverages its technology in the semiconductor field and application background in end products to serve customers in the electronics, automotive and industrial markets. For more information, please visit semiware official website: https://en.semiware.com/

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