ESDAVLC5-1BF4

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TVS - Diodes are essential components in modern electronic circuits, and the ESDAVLC5-1BF4 is a popular option when it comes to protecting against transient voltage spikes. Let\'s explore the application field and working principle of this popular TVS diode.

Application Field

The ESDAVLC5-1BF4 is designed for ESD (electrostatic discharge) protection and overvoltage clamping. It is mostly used in low voltage applications, such as USB port and audio line protection, with a working voltage range from 5V to 16V. It can also be used for protecting automotive circuits, as it is AEC-Q101 qualified, and rated A2LA certified to UL1977.

The device is available in a variety of packages, such as SOT-23, SOT-89-3, SOT-143, SC-70, SC-90, SC-88, and XT small packages. Each has its own specific features that make it suitable for different application conditions. For example, the SOT-89-3 package provides low on-state resistance and a very fast reaction time, while the SC-70 package has a very low profile, ideal for limited space applications. The XT package has an extremely high ESD withstand voltage (15kV), making it ideal for greater protection against electrostatic discharges.

Working Principle

The working principle of the ESDAVLC5-1BF4 TVS is relatively simple. When an overvoltage or ESD pulse is applied, the device will conduct current in the forward direction, effectively limiting the voltage and protecting the circuit.

The device is made up of two components: the diode itself, and the TVS transistor. The diode is responsible for the majority of the protection, acting as a clamping device to limit the spike to a certain voltage level. The other component, the TVS transistor, then takes over, dissipating any remaining excess energy in the form of heat. This combination ensures that the circuit is protected from both overvoltage spikes and ESD pulses.

The ESDAVLC5-1BF4 TVS also offers some additional features. The device has an on-state resistance of only 0.37Ω, which provides less voltage drop, and therefore more efficient protection. It also features a fast reaction time of less than 1ns, meaning it can respond quickly to transient voltage spikes. There is also an integrated temperature-stabilized zener diode, which ensures that the protection is unaffected by temperature fluctuations.

Conclusion

The ESDAVLC5-1BF4 TVS diode is an excellent choice for ESD and transient voltage protection, thanks to its low on-state resistance, fast reaction time, and integrated temperature-stabilized zener diode. It is available in multiple packages, making it ideal for a variety of applications, including USB port protection, automotive circuits, and low-voltage audio line protection.

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