SMAJ26ATR

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Transient Voltage Suppression (TVS) diodes are high speed, self-protecting semiconductor devices used to protect systems against electrical overstress. The SMAJ26ATR is a typical TVS diode used in applications where a fast response time and high surge capability are necessary to protect circuits against spikes in power or voltage. In this article, we will discuss the application field and working principle of the SMAJ26ATR.

Application Field:

The SMAJ26ATR is a bidirectional TVS diode with an operating voltage range from 5.0 to 55 Volts. It is ideal for applications where load dump protection and high tolerance for mis-wiring are required. The diode has a fast response time of less than 1 nanosecond and a peak pulse power rating of 600 watts. It is designed to protect components from overvoltage, overcurrent, and electrostatic discharge damage. It can also be used to protect circuits from power line transients in automotive, industrial, and consumer electronics applications.

Working Principle:

When subjected to a surge, the SMAJ26ATR operates by clamping the voltage to a predetermined value. The diode has a breakdown voltage rating, typically 12.5V or 25.5V. When a surge exceeds the breakdown voltage, the diode “fires” and diverts current away from the load. The diode acts like a high-speed switch, allowing current to flow through the diode until the surge has dissipated. When the surge is gone, the current stops flowing through the diode, and the diode returns to its nonconductive state.The SMAJ26ATR has an external thermal limiting mechanism that is triggered when the diode exceeds its maximum temperature, protecting the diode from thermal runaway. Additionally, it features built-in ESD protection that safely and quickly discharges the device when the ESD potential exceeds the device’s peak power rating.

Conclusion:

The SMAJ26ATR is a reliable, high-speed, and cost-effective TVS diode that is suitable for a variety of applications, including automotive, industrial, and consumer electronic applications. It is capable of providing protection from transients, overvoltage, electrostatic discharge, and other sources of overstress. By understanding the application fields and working principle of the SMAJ26ATR, you can determine if it is the right choice for your application.

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