SMBJ28A-13

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TVS (transient voltage suppressors) diodes are solid state unidirectional semiconductor switches that persistently limit circuit intermittence and provide surge protection for both AC and DC systems. The SMBJ28A-13 is a TVS diode with bidirectional, low capacitance and high peak power ratings. It is specified to withstanding high voltage transients of up to 28 volts and an off-state current of up to 50mA.

The SMBJ28A-13 is a series of TVS diode that can be used in a variety of applications. It is most commonly used for over-voltage, over-current, ESD protection, and lightning protection. The SMBJ28A-13 is well suited for protecting circuits that are capable of withstanding up to 28 volts of transient voltage and up to 50mA of current.

The working principle of the SMBJ28A-13 is similar to that of other TVS diode. It is designed with a PN junction diode that acts as a conductive element when the device is in an off-state. When forward voltage is applied, the diode switches on and the current begins to flow through the device. This current causes the depletion layer of the diode to increase, which limits the voltage that can be passed through the device. When the voltage exceeds the breakdown voltage of the diode, the device clamps the voltage and prevents it from overshooting.

The SMBJ28A-13 also has several features that make it beneficial for use in surge protection applications. It has a low capacitance and high power rating, making it suitable for high frequency circuits. It is also specified to combine low leakage current and ESD protection, making it well-suited for applications that require a device that can withstand high temperature transients. Additionally, the SMBJ28A-13 has a very low clamping voltage, which helps to reduce the risk of overshoot or under-voltage in the circuit.

In conclusion, the SMBJ28A-13 TVS diode is a high-performance device that can be used to protect circuits from over-voltage, over-current, ESD, and lightning. Its PN junction diode acts as an electrically conductive element when the device is in an off-state. When forward voltage is applied, the current draw increases and causes the depletion layer of the diode to expand, limiting the voltage that can be passed through the device. The SMBJ28A-13 also has beneficial features such as low capacitance, high peak power rating, low leakage current, and ESD protection, making it an ideal device for various surge protection applications.

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