SMCJ26AE3/TR13 Circuit Protection

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Transient Voltage Suppressors (TVS) diodes are used to protect circuits from voltage spikes, and are becoming more and more important as our digital systems become more sensitive to such disruptions. SMCJ26AE3/TR13 is one of these diodes, which is designed to protect against voltage transients up to 5kV. In this article, we will explore the application field and working principle of SMCJ26AE3/TR13.

What is SMCJ26AE3/TR13?

SMCJ26AE3/TR13 is a unidirectional 5kV TVS, which utilizes high power density low on-resistance silicon semiconductor array and a special inverted mesa design to achieve low leakage current and excellent clamping capability. The device features fast response time (less than 1ns), low clamping voltage (less than 17V), and service life up to 5 years (@85°C). With its high blocking voltage, high surge current, and low capacitance, the SMCJ26AE3/TR13 is ideal for high voltage protection and ESD (electrostatic discharge) protection.

Application Fields

The SMCJ26AE3/TR13 TVS is suitable for a wide range of applications, including automotive, telecom, appliance, and consumer electronics. The device can also be used to protect data and signal lines in laptops, tablets, and other portable devices. In addition, the SMCJ26AE3/TR13 can be used to protect power supplies from surges and ESD events.

Working Principle

The SMCJ26AE3/TR13 TVS works by diverting disruptive voltage transients away from the system. When a surge occurs, the device absorbs the energy and dissipates it in the form of heat, thus protecting the circuit from damage. The device is composed of numerous cells connected in series. The cells are reverse-biased, so they can’t conduct current in the normal mode. However, when a surge occurs, the cells become forward-biased, which allows current to flow. This enables the device to take up the surge energy and dissipate it as heat.

Conclusion

The SMCJ26AE3/TR13 transient voltage suppressor diode is a versatile device that can be used to protect a variety of systems from voltage transients and ESD events. It features a high blocking voltage, fast response time, and low capacitance, making it a highly effective surge protector. Knowing the application field and working principle of the SMCJ26AE3/TR13 will help engineers to design better protection for their circuits.

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