SMBJ45CA-13-F

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TVS - Diodes

TVS diodes are designed to protect circuits against electrostatic discharge (ESD) and electrical fast transient (EFT). SMBJ45CA-13-F is a diode that is generally used for transient voltage protection, over voltage protection, and other surge protection applications. The device is a small, surface mount, two leaded component designed to be connected between power, ground, and signal lines. It has excellent ESD protection properties.

Application Field

The SMBJ45CA-13-F diode is designed to protect sensitive electronic components from ESD, EFT, and other transients. These diodes can be used in a wide range of applications, such as in telecommunications, automotive systems, medical equipment, industrial controls, consumer electronics and many more. The use of an appropriate diode in a given application will help protect electronic systems from damage due to transient voltage events.

Working Principle

The SMBJ45CA-13-F diode is designed to act as an instantaneous current path when exposed to transient voltages or current surges, protecting the sensitive circuits from further damage. The device works by clamping the voltage to a maximum level, depending on the specific diode used. The device consists of two back-to-back Zener diodes that act as a current shunt. When the voltage reaches or exceeds the device\'s maximum voltage standoff, the diode will start to limit the current, thereby reducing the amount of damage to the electronic components.

The SMBJ45CA-13-F is a reverse polarity diode and the following components are necessary for proper operation: a load resistor (RL) to protect against overcurrent, an input capacitor (CIN) to provide a low impedance path for voltage transients, and an output capacitor (COUT) to provide a low impedance path for current transients.

When the protection circuit is activated, the current flows through the protective diode and is diverted to the RL, CIN, and COUT components. The current then flows from the load resistor to the CIN and COUT components and dissipates as heat, thus providing protection against transient voltages.

The SMBJ45CA-13-F diode is a reliable and cost effective protection solution for a wide range of applications. The device is robust, easy to install, and allows for a unique level of protection in many applications.

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