SA85CA-E3/73 Circuit Protection

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The SA85CA-E3/73 is a transient voltage suppressor diode (TVS) designed for use in protecting electronic systems and components from destructive overvoltage transients, such as those caused by electrostatic discharge (ESD), electro-magnetic interference (EMI), lightening, and other similar phenomena. Its application field includes automotive, power distribution, telecommunication end equipment and industrial systems.

The SA85CA-E3/73 is a high-speed device with a maximum breakdown voltage of 73V. Its low leakage current and fast response time make it suitable for protection in a wide range of applications. Its ultra low clamping voltage and low clamping capacitance help to reduce the risk of excessive signal distortion.

The main purpose of the SA85CA-E3/73 is to protect against transient overvoltage events. It is designed to limit the voltage across the device to a predetermined value during an overvoltage spike. This, in turn, helps protect the system and its components from the risk of damage due to excessive voltages.

The working principle of the SA85CA-E3/73 involves two stages. First, a zener diode provides a variable-voltage-clamp mechanism. This limits the transient voltage across the device to a predetermined value. Second, a complementary MOSFET transistor allows for fast response to overvoltage transients, allowing for current to flow away from the protection device. The transistor also provides a low-resistance short-circuit path to ground, further protecting the system from exposure to potentially damaging overvoltage transients.

The SA85CA-E3/73 is a useful tool to protect systems and components from damage due to transient overvoltages. Its application field is varied and its high-speed response time and low-clamping voltage help to reduce the risk of unwanted distortion of the protected signal. In addition, the complementary MOSFET design helps to ensure safe and effective protection of the system.

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