FTZ4.3ET148

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FTZ4.3ET148 is part of the family of Diodes-Zener-Array from Vishay Semiconductor. This series consists of five devices in a small and surface mount package. The FTZ4.3ET148 consists of two zener diodes and two reverse breakdown ESD busses, providing a protection voltage up to 5.6V. The zener breakdown voltage range is from 4.3V to 5V.

The FTZ4.3ET148 is designed for the application where low voltage protection is needed, such as in low dropout or low voltage power supplies, to provide a reliable, cost-effective and overvoltage protection solution.

Vishay Semiconductor also offers a comprehensive set of support products to help provide an optimized solution and enhance performance in various designs. These include TVS diodes, replacement ESD busses, and current limiting and current sensing solutions, which leads to a more reliable and robust circuit design.

In terms of its working principle, the FTZ4.3ET148 is a voltage clamp, disabling breaking circuit when the voltage on the circuit exceeds the value set by the clamp. The FTZ4.3ET148 has two diode breakpoints, the first one limits current to a safe level, while the second one provides overvoltage protection. The device also consists of two ESD busses and a reverse breakdown voltage. The ESD busses absorbs any large overvoltage pulses, while the reverse breakdown voltage maintains the voltage level below the break voltage. This ensures that no further damage occurs to the circuit and the system.

The device features a low shunt resistance of 12 miliOhms, small leakage current of 10 mA, high ESD protection up to 8KV, and a working temperature range of -55°C to 125°C. This makes it a perfect choice for applications where electrical and thermal performance is the main concern.

The FTZ4.3ET148 can be used for various applications such as over-current protection in power supplies, voltage overshoot protection for DC/DC converters and automotive infotainment systems. It can also be used in motor control systems, telecom systems and any other application that requires robust low voltage protection.

In conclusion, the FTZ4.3ET148 is a reliable, cost-effective and overvoltage protection solution, which can be used in various applications. This device features a low shunt resistance, low leakage current, high ESD protection and wide working temperature range. This makes it a perfect choice for applications where electrical and thermal performance is the main concern.

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