SMBJ24CA-Q

SMBJ24CA-Q TVS - Diodes Application Field and Working Principle

The SMBJ24CA-Q TVS – Diode is a high-reliability electronic component that is used in a variety of industrial, consumer and automotive applications. TVS diodes are commonly used to provide transient (surge) protection and reverse voltage protection for sensitive electronic components. The SMBJ24CA-Q is specifically designed to protect voltage sensitive components from overvoltage or ESD induced transients. The SMBJ24CA-Q also features fast response time and low capacitance, making it ideal for high-speed signal protection applications.

When using a TVS diode in a circuit, it is important to make sure that the diode is a suitable match for the application in terms of maximum reverse voltage and current ratings. The SMBJ24CA-Q has a maximum peak pulse power of 1500W (8/20µs waveform) and a maximum clamping voltage of 24V.

The SMBJ24CA-Q TVS diode is a Unidirectional device that is rated to operate at 6.5A continuous and 15A peak. The device is designed for an operating voltage up to 24V, and can handle voltages up to 40V for a limited amount of time before the surge current is too high for the diode to handle.

The SMBJ24CA-Q is a two-terminal, unidirectional TVS diode with an active area consisting of two separate regions. The first region consists of a protection diode with a breakdown voltage of 24V, and the second region consists of low-capacitance junction barrier (LJB) protection. The protection diode offers the primary protection against over-voltage transients, while the LJB protection reduces capacitance and provides secondary protection against high-energy ESD strikes.

The way a TVS Diode works is quite simple. When the reverse voltage across the diode exceeds the breakdown voltage the diode starts to conduct current, thus limiting the voltage across the components being protected by the diode. The protection diode also prevents the components being protected from receiving excessive current from a reverse-voltage transient.

The low capacitance protection provided by the SMBJ24CA-Q helps to reduce transmission line reflections and increases the working frequency of the protected circuit. The low junction-capacitance of the SMBJ24CA-Q can also reduce the rise and fall time of the protection diode, providing better over-voltage protection and faster response times.

The SMBJ24CA-Q TVS diode is an ideal solution for applications requiring fast response, high-reliability transient protection and low-capacitance, such as in high-speed signal lines, ESD protection circuits, power supply and employee equipment protection.