SMDA03/TR7

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• TVS - Diodes

  TVS (transient voltage suppressor) diodes are used to protect electronic equipment from high-voltage transients, also known as electrical spikes, caused by lightning or electromagnetic interference (EMI) from external sources. They are usually placed between the power supply and the delicate device to absorb any sudden surges in voltage. TVS diodes are also used to protect sensitive electronic components such as memory chips, microprocessors, and other integrated circuits.

  SMDA03/TR7 Application Field and Working Principle

  SMDA03/TR7 is a transient voltage suppressor diode from Vishay Semiconductor, designed to protect sensitive electronic devices from electrical surges. This powerful diode is designed to absorb and dissipate the transient voltages with high surge capability and low clamping voltage, and provides protection from overvoltage transients in a rugged, high power package.

  This TVS diode comes in a DO-41 (SMDA03) or SMB (SMDE03) package, and it is designed to protect a wide variety of sensitive components from overvoltage transients, such as Relay coils, Transistor switches, Microprocessors, NFC antennas, Video lines and more.

  This device contains 6 independent diodes with a breakdown voltage of 28V and a maximum peak surge current of 1500 amps. The device also provides overvoltage protection for inputs up to 28V. The operating voltage range is between -39 to 75V, and the device is rated at 1W of power dissipation.

  The working principle of the SMDA03/TR7 is quite simple. When a transient voltage comes through, the diode will be forward biased, and it will absorb the energy and dissipate it as heat. The device is designed to have a low clamping voltage, meaning that when it is triggered, the voltage is suppressed to a safe level before it can damage any sensitive electronic components.

  In addition to providing overvoltage protection, the SMDA03/TR7 also blocks high-frequency signals, and provides ESD (Electrostatic Discharge) protection for sensitive components.

  Finally, this device is designed to have a fast response time, and it can react to voltage changes in 0.1 nanoseconds. This makes the device ideal for use in high-speed applications such as data transmission and signal processing.

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