SMAJ20A R3G

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Transient Voltage Suppressor (TVS) diodes are a type of protective semiconductor device, specifically designed for dissipating high levels of power in a very short period of time. They are frequently used to protect electronic circuits from false operation due to over-voltage, or "spikes", in the power supply. TVS diodes can be found in a wide variety of applications, from circuit protection in automotive systems to power surge-suppression in consumer electronics.

One example of a TVS diode is the SMAJ20A R3G. This TVS diode is specifically designed to provide transient voltage suppression for high-speed applications. It features an average power dissipation rating of 20 Watts and a maximum surge rating of 70 Amps. It is also compliant with the Restriction of Hazardous Substances (RoHS) and is UL-listed, making it suitable for a variety of commercial and industrial applications.

In terms of its application field, the SMAJ20A R3G can be used for the protection of cables, data storage devices, computers, and other electronic components from voltage transients. It is designed for bidirectional operation and can be used in circuits up to 65V DC. It is an Electrostatic Discharge (ESD) protection device, which means that it is capable of dissipating high power levels in the event of an ESD event.

The working principle of the device is based on the Zener effect. During normal operation, the SMAJ20A R3G works as an ordinary diode, allowing current to flow directly through it. When the voltage across the diode exceeds the breakdown voltage, the diode starts to conduct in the reverse direction. This allows the voltage to be dissipated as heat, instead of being conducted through the circuit.

When the transient voltage has subsided, the device returns to its normal mode of operation. This ensures that the device continues to protect the circuit, even after the transient has passed. The SMAJ20A R3G is highly reliable and utilizes a thermally stable Zener breakdown, which eliminates the need for frequent replacements.

The SMAJ20A R3G is an effective and reliable TVS diode for protecting circuits from ESD events and transient over-voltage. It is suitable for use in a variety of commercial and industrial applications and is compliant with the RoHS and UL standards. With its high power dissipation rating and thermally stable Zener breakdown, it is an effective solution for protecting sensitive electronic circuits.

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