SMBJ12CD-M3/I

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TVS – Diodes, like the SMBJ12CD-M3/I, are designed to protect electronic devices from voltage transient spikes that could cause permanent damage. Such diodes often consist of metal-oxide-varistors (MOVs) or avalanche diodes, along with shunt capacitors, intended to absorb short-duration energy, regulate voltage, and divert the transient away from vulnerable components.

The SMBJ12CD-M3/I is a 12V Voltage Suppressor diode designed by a type II surge-withstand rating. This TVS – diode has a high peak pulse power rating of 600W and a low ESD (electrostatic discharge) rating of 8kV. The device has a low 10-picosecond clamping response time, which helps prevent low-level voltage transients from damaging the sensitive circuit components.

The typical application field for the SMBJ12CD-M3/I includes computers, consumer electronics, and industrial applications, such as touchscreens, TVs, network routers, and high-end servers. This device’s high reliability and excellent performance make it ideal for protecting sensitive electronics in these industries.

The working principle of the SMBJ12CD-M3/I is quite simple. It works by absorbing energy from voltage spikes and converting it into heat. The device is essentially a highly conductive semiconductor material (usually an MOV) sandwiched between two electrodes. When a voltage spike occurs, the MOV increases its resistance, allowing more current to pass freely through it. As the current passes through, it is absorbed and released as heat.

In order to better protect vulnerable components, the SMBJ12CD-M3/I also incorporates a shunt capacitor. The capacitor is connected to the MOV, and when it senses a voltage spike, it shunts the excess energy away from the vulnerable components, helping to regulate the voltage and protect the circuit from permanent damage.

Overall, the SMBJ12CD-M3/I offers excellent protection for sensitive devices in industrial, consumer electronics, and computer applications. By using an MOV and shunt capacitor to absorb energy from voltage transients, the device is able to protect components from the damaging effects of overvoltage. With its fast clamping response time and high pulse power rating, the device is highly reliable and is well-suited for use in a variety of applications.

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