GLL4749A-E3/97

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GLL4749A-E3/97 Application Field and Working Principle

The GLL4749A-E3/97 is a single Zener diode designed to limit overvoltages and provide reverse polarity protection. It is a highly robust device with a resistance ratio of 30mA/0.1V, making it suitable for many industrial and consumer applications, such as electric power systems and automotive electronics.

Features

• Wide junction temperature range of -55°C to +150°C
• Low leakage current
• Good reverse breakdown voltage and Zener impedance
• Good thermal reliability and resistance to electrical transients

Applications

• Power supply voltage protection
• Overvoltage protection in automotive electronics
• Various consumer electronics, including weather stations and security systems
• Protection for data lines in industrial systems

Working Principle

The GLL4749A-E3/97 is a PIN diode that works on the principle of reversed propagation of charge carriers across a forward- or reverse-biased junction. This occurs when a diode is reverse-biased and the voltage across it exceeds the breakdown voltage. The freed charge carriers accelerate while propagating in the reverse direction, generating current.

When forward-biased, the free charge carriers become minority carriers and recombine, forming a potential barrier along the junction. This barrier prevents further current flow and is an essential feature of the diode. Depending on the application, the GLL4749A-E3/97 can be used as a stand-alone device, or it can be combined with other components to create complex circuits.

Conclusion

The GLL4749A-E3/97 is a single Zener diode designed for a variety of industrial and consumer applications. It is a highly robust device, offering low leakage current and thermal reliability. Its reverse breakdown voltage and Zener impedance make it suitable for use in power supply voltage protection, overvoltage protection in automotive electronics, and protection for data lines in industrial systems.

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