SMCJ26-E3/9AT

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TVS - Diodes are a type of diode that is designed to protect electrical circuits from overvoltage, such as lightning or power line surges. One particular type, the SMCJ26-E3/9AT, is a low-capacitance unidirectional TVS diode. It is primarily used as an ESD (electrostatic discharge) protection diode.

An SMCJ26-E3/9AT is designed to protect circuits from transient, overvoltage signals. Its low capacitance and low reverse leakage current enables it to act as an overvoltage protection diode for high-speed circuits. The SMCJ26-E3/9AT has a wide clamping range from 10 volts to 21 volts. The diode has a power dissipation rating of 500 watts and a maximum Reverse Standoff Voltage of 26 volts. It is also designed to provide superior protection against ESD with a peak pulse power dissipated of 8.3 watts.

The SMCJ26-E3/9AT is primarily used in applications such as notebook computers, digital cameras, and other consumer-based electronics which require protection from ESD. It is also one of the most popular protection devices used in telecom systems and mobile phone base stations.

The working principle behind the SMCJ26-E3/9AT is quite simple. When an overvoltage, such as lightning, occurs, the diode begins to conduct the current away from the protected circuit. This effectively limits the voltage seen by the protected circuit to a safe level. This conductive path provided by the diode also has the helpful side effect of suppressing any Electrostatic Discharge (ESD) present on the lines.

When a voltage below the diode’s breakdown voltage is applied, the diode acts as an open circuit. This allows it to be used in both high-voltage applications as well as low-voltage ones. This is one of the biggest advantages of using TVS - Diodes in circuit protection applications.

In summary, SMCJ26-E3/9AT is a low-capacitance unidirectional TVS diode that is primarily used as an ESD protection diode. It is designed to protect circuits from transient, overvoltage signals by shunting current away from the protected circuit and suppressing ESD. Its power dissipation rating, low leakage current, and wide clamping range makes it a popular choice for mobile phone base stations, telecom systems, and other consumer-based electronics.

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