ATV15C190JB-HF Circuit Protection

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TVS (Transient Voltage Suppressor) diodes are semi-conducting devices primarily used to protect sensitive electronic components from voltage transients, electrical surges, and electrostatic discharge (ESD) events. The ATV15C190JB-HF is a type of unidirectional, high-power surge clamp, a variety of transient voltage suppressor (TVS) diode designed to protect against voltage transients generated from sources such as DC power sources, inductive switching systems, and cabling and external circuits. In particular, it is used for overvoltage protection in industrial, automotive, and consumer applications.

This ATV15C190JB-HF TVS diode is a bipolar device, composed of two interconnecting p-n junctions. It has a clamping voltage of 15V, can handle up to 190 amps of surge current, and a 100 nanoseconds response time. It is designed to clamp a 250V working voltage, so it can readily protect different electronic components of an application from overvoltage damages caused by various disturbances such as EMI/RFI, switching surges, ESD, and other over-voltage events of AC and DC power sources.

The operation of the ATV15C190JB-HF resembles a conventional zener diode. Its structure has two p+ blocks connected together back-to-back. One of the p+ blocks act as an ESD immunity and the other as an over-voltage protection device. From the source, the p+ block connected to the load is first triggered which helps in dissipating the high voltage and current transients and providing protection to the application.

The working principle of the ATV15C190JB-HF is simple yet efficient. It operates by sensing high voltage transients and then quickly responding and suppressing the disturbing voltage to prevent it from reaching the application. When the TVS diode senses a transient voltage, it quickly reduces the high voltage to its rated clamping voltage. This process ensures that the vulnerable circuitry of the application does not get damaged due to the transient string of voltage spikes.

The ATV15C190JB-HF has many applications, including power line protection circuits, AC adapter protection, disk drive or printer surge protection, and overvoltage protection for AC and DC power sources. It is also suitable for use in automotive applications, industrial control systems, and consumer electronics. Moreover, it features an industry-standard two-lead, surface-mount SOD-123 package with a 5.1 mm × 3.2 mm footprint for easy installation.

The ATV15C190JB-HF provides excellent clamping characteristics and surge energy handling capabilities for overvoltage protection of different types of electronic applications. Its low capacitance, fast response time, and industry-standard miniaturized footprints make it an ideal choice for various automotive, consumer, industrial, and other applications requiring robust surge protection and ESD immunity.

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