3EZ4.7D5E3/TR8

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The 3EZ4.7D5E3/TR8 Diode is part of the single Zener diodes family. It contains a single PN junction and works under a reverse bias.

Application Field and Working Principle of 3EZ4.7D5E3/TR8 Single Zener Diodes

The 3EZ4.7D5E3/TR8 diode is typically used in systems where control and protection of voltages and currents is needed, such as input surge protection, DC power converters, lighting systems, voltage regulators, and regulators. The low reverse leakage current of these diodes lets them perform more efficiently on a wide range of load currents.

The working principle of a single Zener diode comes down to the usage of the breakdown voltage, a voltage limit that once surpassed, results in a current flow. When the Zener diode is installed in a circuit with a positive voltage, the diode is reverse biased, meaning that it does not allow current flow until the voltage reaches the breakdown voltage. At this point, current flows through the diode, and following this, the reverse breakdown current. The revers breakdown current is greater than the forward current in forward-biased diodes. This ensures that the voltage of the circuit does not rise above the breakdown voltage.

Working Limitations of 3EZ4.7D5E3/TR8 Single Zener Diodes

Even though single Zener diodes are cost-effective, they typically have lower operating temperature range, lesser surge current power capability and lower power and voltage capabilities when compared to Zener arrays. The 3EZ4.7D5E3/TR8 Diode typically has a breakdown voltage range of 4.7V - 5.3V, with a maximum allowable power of 300mW at 25°C. This diode normally operates at a temperature range of -55°C to 150°C.

Conclusion

The 3EZ4.7D5E3/TR8 Diode is a single Zener diode that functions as a voltage and current protector and regulator within a wide temperature range. It is a cost-effective solution within the limited power, voltage and temperature range against Zener arrays. This diode remains reverse-biased until reaching the breakdown voltage, which causes the diode to allow current flow up to its maximum threshold.

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