TV04A251JB-G Circuit Protection

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A TVS or Transient Voltage Suppressor (also known as surge-protector diodes) is an electronic device designed to protect sensitive equipment from transient voltage from sudden discharges such as lightning or power surges. The TV04A251JB-G is a bidirectional ESD/Surge protection Diode, with optimized low capacitance. It has a low on-state voltage of 2.4V max and a low leakage current of 500nA typical, which makes it ideal for applications that require low voltage operation and high reliability. The device also has very low ESD performance, with an 8kV human-body model (HBM) ESD rating of 14A max which allows it to protect against electrostatic discharges without damage or disruption.

In terms of application fields, the TV04A251JB-G is most commonly used in communication and consumer electronics, particularly in fast Ethernet (up to 1 Gbit/s) and audio and video (A/V) applications. It is also used in the automotive industry as a component in electronic control units for the protection of inputs and outputs. It is also suitable for general-purpose circuit protection.

The working principle of the TV04A251JB-G is simple. When a transient voltage exceeds a certain threshold, the device will clamp the transient voltage and safely dissipate its energy by triggering a current pulse through the PN junction and limiting the voltage rise. This dissipates the voltage above the breakdown voltage of the device, protecting the equipment from damage and providing a high level of protection from overvoltage.

The device also has a reverse bias protection rating of 20V which helps to protect against reverse current flow. This means that the TV04A251JB-G is suitable for use in applications with reverse polarity, where a device with a lower reverse bias protection rating might fail.

The TV04A251JB-G is an ideal solution for the protection of sensitive electronic components from transient voltage. Its low capacitance, low on-state voltage, and low leakage current provide reliable protection against ESD, surges, and other transient voltage events. It is suitable for use in a variety of applications, including communication, consumer electronics, automotive, and general-purpose circuit protection.

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