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TVS - Diodes

The VTVS9V4ASMF-HM3-08 is a Transient Voltage Suppression (TVS) diode designed to protect sensitive electronic components from voltage transients caused by electrostatic discharge (ESD), electrical fast transients (EFT), and surge errors. This specific TVS diode is designed to be robust and reliable and offers superior EMI/RFI noise suppression, making it a popular choice for many applications.

Application Fields

The VTVS9V4ASMF-HM3-08 is frequently used in consumer, industrial, and automotive applications due to its versatility and trustworthiness. Common applications include USB 2.0 and 3.0 2.5 GB/s as well as other high-speed serial buses, DC-DC converters, audio/video and power supplies. This TVS diode can also be used in in power system protection, as it can support EFTs of up to 30A and 8/20µs surges of up to 40A.

For higher-speed applications, the VTVS9V4ASMF-HM3-08 can also be used as a data-line protector (DLP). Given its small size, it is a great solution for space-constrained environments including mobile and wearable devices. This TVS diode can be used in a variety of applications and is also legal to use in automotive applications.

Working Principle

In essence, the VTVS9V4ASMF-HM3-08 works by detecting voltage transients and converting the current to a safe level, protecting sensitive electronics. This is achieved by two discrete components, a Zener diode and a clamping diode, connected in series and reverse-biased. At the outset, the reverse voltage is sufficiently low, preventing current from flowing. When the voltage reaches the breakdown voltage of the Zener diode, current starts to flow through the Zener diode, eventually overpowering the clamping diode and “clamping” the voltage at its breakdown voltage level. This is how the TVS diode is able to ensure that the voltage does not exceed a certain safe level, thereby preventing damage to sensitive electronic components.

The VTVS9V4ASMF-HM3-08 utilizes a diode avalanche concept and is equipped with numerous features that make it highly reliable and resilient. Its small size allows its use even in the most space-constrained environments, and for higher-speed applications, its fast response time of 8ns makes it suitable for data-line protection. Additionally, it offers superior EMI/RFI noise suppression capabilities, which make it suitable for even the most sensitive of applications.

Conclusion

The VTVS9V4ASMF-HM3-08 is an advanced TVS diode that is equipped with numerous features that make it ideal for use in consumer, industrial, and automotive applications. It is capable of suppressing EMI/RFI noise and ensuring that the voltage does not exceed a certain level, thereby protecting sensitive electronic components. It is small in size, making it suitable for space-constrained environments, and its 8ns response time makes it perfect for higher-speed applications. Overall, it is a robust and reliable solution for protecting against voltage transients.

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