2EZ20D5-TP Discrete Semiconductor Products

Diodes - Zener - Single

2EZ20D5-TP is a single zener diode that could be used for voltage regulation and surge suppressor applications. It is transparent epoxy package. Zener diodes are commonly used for voltage regulation, surge protection, and signal clipping.

Application Field

2EZ20D5-TP is specifically designed for ESD (electrostatic discharge) protection of signal lines and protecting level shifter and TTL circuits. Its high peak current capability allows it to provide the signal protection in short circuit conditions. This diode has also been found useful in voltage and frequency control, over-voltage protection, and noise reduction scenarios with its reverse breakdown voltage of 20V.

Working Principles

In simplest terms, Zener Diodes works by optimizing the flow of current in only one direction until a specific threshold voltage is reached. After the threshold voltage is exceeded, electrons flow in both the forward and reverse direction. This establishes a voltage regulator or stabilizer circuit. The breakdown voltage is determined by the type of semiconductor material and doping concentration.

When forward biased, a Zener diode operates just like a common rectifier diode. But when the reverse voltage reaches its breakdown voltage, the diode enters into a region of Avalanche Breakdown. The diode allows current to flow even in the reverse direction. This type of breakdown is called Zener or avalanche break down. Normally in Avalanche Breakdown there is a large amount of current flow and a high amount of noise generation in the circuit. But Zener Diode has a particular structure which is designed to reduce the noise during this breakdown process.

2EZ20D5-TP has a low maximum Reverse Leakage Current (I Rmax) of 2mA and a working Reverse Power Dissipation of 500mW at room temperature. Together these two factors make it suitable for applications where there is a very low voltage noise which could in turn affect the performance of any device connected to it.

Conclusion

The 2EZ20D5-TP is a single zener diode with a breakdown voltage of 20V that has extremely low noise levels. Its features make it suitable for variety of applications, especially signal protection. Its peak current capability, low reverse leakage current, and reverse power dissipation are the main reasons why this diode is used in a wide range of electronics and signal circuits.