ATV30C540JB-HF Circuit Protection

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TVS - Diodes are a type of electrical component that prevents transients from flowing through the system by effectively shorting across the system. The ATV30C540JB-HF is a 6-pin single-channel 30V TVS diode with a high surge rating, designed for automotive and general-purpose applications. In this article, we will explain the applications of ATV30C540JB-HF and its working principle.

Applications

The ATV30C540JB-HF can be used to protect components from transients generated by a variety of sources including Electrostatic Discharge (ESD), Lightning, Radio Frequency Interference (RFI), Switching Regulators and other over-voltage conditions. It can be used in automotive and general-purpose applications such as engine control systems, electric motor control, power supplies, event and audio-visual Electronics, Internet of Things (IoT) applications, and home appliances. It features a low capacitance and low leakage current, making it suitable for high-speed signal communication.

Working Principle

ATV30C540JB-HF is designed with an avalanche breakdown voltage of 30V. In normal conditions, there is no current flowing through the diode, so it serves as an insulator. When the voltage reaches the breakdown voltage, the diode starts to conduct current, providing a low-impedance path for the transient, dissipating the surge energy and protecting components beyond the diode. Depending on the current of the surge, the diode can provide a resistance ranging from 0.5Ω to 1.5Ω. After the surge has been absorbed, the diode will automatically return to the non-conductive state, allowing the system to resume normal operations.

The ATV30C540JB-HF features a surge rating of 540A when operated at 25℃ for up to 10/1000µs. It also features a rating of 125A for operating temperatures between -55℃ and 150℃. This makes it suitable for a wide range of applications in harsh environmental conditions.

The ATV30C540JB-HF is also designed with a self-resetting capability. At extremely high temperatures, the system can self-reset by permanently removing the surge current without causing any damage to the device or surrounding components. This feature is essential for ensuring the reliability and safety of the system.

Overall, the ATV30C540JB-HF is a reliable and versatile TVS diode, specially designed for protecting components in automotive and general-purpose applications from transients. It features a high surge rating, low capacitance, low leakage current, self-resetting capability, and is UL certified, making it suitable for a variety of applications in harsh environmental conditions.

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