SMCJ30CA-M3/57T

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TVS diodes are an important sector of electrical components, as they help protect circuits from electrical transients, electromagnetic interference (EMI) and electrostatic discharge (ESD). Television, phones, electronics, and communications equipment are all examples of devices that need TVS diodes.

The SMCJ30CA-M3/57T is a surface mount, dual bidirectional TVS diode designed to protect sensitive electronics from voltage transients induced by lightning and other transient voltage events. It is commonly used in communications systems, automotive subsystems, and industrial electronics, and features a flat, low capacitance design to protect TVs, communication lines, power supplies and data lines.

The SMCJ30CA-M3/57T is comprised of two diodes in a single package with each diode having a rated working voltage of 30V. It offers a maximum 5pF lower capacitance and forward surge current rating of 57A. Both bi-directional diodes have a reverse stand-off voltage of 30V with an operating temperature range from -55°C to 150°C. The device is housed in the SMA package with solderable nickel-plated tabs for easy mounting.

The SMCJ30CA-M3/57T can be applied in a wide range of applications, such as TV sets, home appliances, communication systems, automotive subsystems, and industrial electronics. It is also used in industrial process controls, power supplies and other system components. It can also be used as a key component in consumer electronic devices to protect against electrostatic discharge.

The TVS diode’s operation can be divided into two stages:

First, when the TVS diode is exposed to a voltage surge, it acts as a closed switch, in which case the voltage passes through, and no current is drawn from the supply. This prevents any further current from passing through the device until the voltage returns to normal.

Second, when the voltage is reduced to acceptable levels, the TVS diode behaves similar to a diode, functioning as an active current absorber. This allows current to pass from the supply, thus protecting the device from damage.

In summary, the SMCJ30CA-M3/57T is designed to protect sensitive electronics from voltage transients induced due to lightning and other transient voltage events. Having very low capacitance of 5pF, it is well suited for use in modern technologies such as TVs, communication lines, power supplies and data lines. The device also offers excellent protection against electrostatic discharge for consumer electronic devices.

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