SA70HE3/73

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Transient Voltage Suppressors (TVS) Diodes are a type of voltage-controlled device designed to protect other semiconductor components from harmful voltage, over-current and electrostatic discharge (ESD) events. The SA70HE3/73 is a special purpose device with advanced features and capabilities designed to provide enhanced protection and superior performance for power management and signal processing applications.

Application Field

The SA70HE3/73 is designed to provide protection against over-voltage, over-current, and ESD events and is suitable for application in a wide range of fields, including automotive, industrial, telecommunications, aerospace, and consumer electronics. Thanks to its low capacitance and low total maxium device capacitance, it is specifically designed to be used in high-frequency signal processing and RF applications where ESD and over-voltage protection are essential. In addition, the SA70HE3/73 is ideal for use in nonvolatile memory and data bus protection applications, as well as in reverse battery protection.

Working Principle

The SA70HE3/73 is a voltage-triggered device, meaning it will limit the voltage it receives. This voltage-limiting protection is accomplished through the avalanche breakdown of the internal PN-junction. This breakdown occurs when a critical amount of current is applied to the junction. This produces an avalanche of charge carriers, resulting in a steep increase in the voltage drop. Once the voltage drops, the current is limited to a safe level.

The SA70HE3/73 also provides ESD protection, by clamping the ESD pulse to a specific voltage defined by the manufacturer. This prevents the majority of ESD pulses from entering the circuit and damaging delicate components.

In addition, the SA70HE3/73 provides over-voltage protection, by quickly responding to rising voltages and clamping the voltage to a safe level. This helps prevent electrical overloads and possible circuit damage due to over-voltage events.

Overall, the SA70HE3/73 is designed to provide superior protection from the most common threats, such as electrical over-voltage, over-current and ESD events, allowing the user to have added peace of mind when using it in their applications.

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