SMBJ90CA-TP Circuit Protection

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A TVS - Diode is a type of electronic device that is used to protect circuits and components from damage due to overvoltage transients, voltage spikes, current surges, and noise. The SMBJ90CA-TP is a particularly popular TVS - Diode device, and its application field and working principle can be described in greater detail below.

Application Field

The SMBJ90CA-TP is mainly used for protecting electronics and components from damaging transient voltages due to electrostatic discharge (ESD) or other surge-related activities. It is suitable for use in a variety of consumer applications, including networking, communication, and automotive electronics, as well as industrial applications. The device is ideal for use in RF circuit protection due to its low capacitance (8 pF typical), small size, and low clamping voltage (15.4 V typical).

Working Principle

TVS - Diodes such as the SMBJ90CA-TP work by operating in a similar manner to zener diodes. When a high transient voltage is applied to the device, it creates an electrical field that causes the current to flow in the opposite direction. This is known as the avalanche effect, and is what causes the transient voltage to be "clamped" at a certain level. The device has a reverse breakdown voltage, which is the voltage at which this clamping effect begins to occur. This voltage is typically equal to the breakdown voltage of the zener diode in the device.

The SMBJ90CA-TP is equipped with both surface mounting and through-hole mounting, allowing for easy installation. It is unidirectional, meaning it only works in one direction, and has a maximum power dissipation of 400 W. It is also quite robust, capable of withstanding high surge levels (up to 3 kV) and repelling noise.

Conclusion

The SMBJ90CA-TP is an excellent TVS - Diode device and is suitable for a variety of applications due to its low capacitance, small size, and low clamping voltage. It works by utilizing the avalanche effect, which causes the clamping of transient voltages at a certain level. It is also equipped with both surface mounting and through-hole mounting, and is capable of withstanding high surge levels and repelling noise. Overall, the SMBJ90CA-TP is a solid choice for transient voltage suppression.

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