DFLT36A-7 Circuit Protection

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TVS (Transient Voltage Suppressors) diodes are a special type of diode used to protect electronic equipment from potential damage caused by transients such as electrical surges. The DFLT36A-7 TVS diode is a unidirectional device used in applications ranging from telecom line protection to blocking current transients. Its ability to prevent damage from transients through its high-performance design puts it amongst the top choices for many applications.

Working Principle

The DFLT36A-7 TVS diode functions as a lightning protection component providing transient overvoltage suppression for AC/DC power lines. It uses a zener diode in a series array with a peak pulse current. When a transient voltage exceeds the diode’s reverse breakdown voltage, the zener diode collapses and diverts the transient’s energy to a parallel connection.

The integrated NTC thermistor, which is self-regulating, helps protect sensitive components by dissipating or shunting excessive current away from them. The DFLT36A-7 also features a polymeric positive temperature coefficient (PPTC) device, which helps limit high voltage and current transients.

Applications

The DFLT36A-7 is suitable for a variety of applications, including the following:

• Automotive systems
• Network communications
• Telecommunications
• Industrial control systems
• Bidirectional surge protection
• Ringing applications

This TVS diode also has a wide range of uses in consumer electronics, such as TVs, cell phones and other portable devices. In addition, the DFLT36A-7 can be used in various switch mode power supplies (SMPS). It provides protection from over voltage, over current, voltage transients, and ESD.

Product Specifications

The DFLT36A-7 TVS diode from STMicroelectronics is a standard transient voltage suppressor device consisting of two series elements. It has a reverse clamp voltage of 36V, a peak pulse power of 400W (10/1000μs), and a maximum capacitance of 8pF. The operating temperature ranges from -55°C to +150°C, and the product has a low leakage of less than 1μA.

The diode has a very low profile of only 0.2mm, making it highly suitable for surface mount technology (SMT) applications. In addition, the product’s low capacitance and fast response allow it to protect against very high-frequency spikes. This makes the DFLT36A-7 extremely reliable and efficient for various types of applications.

Conclusion

The DFLT36A-7 TVS diode is a unidirectional surge protection component designed to provide protection from transients in a wide range of applications. Its impressive features, such as the NTC thermistor and PPTC device, make it one of the most popular choices for high performance applications. Moreover, its low profile, fast response, and very low capacitance make it suitable for both SMT and conventional mounting methods.

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