SMBG70CAHE3/5B Circuit Protection

TVS - Diodes are essential components in many electronic products. They contain a junction diode, a transistor, and a surge-protection circuit, and they serve as electronic protection devices, helping prevent damage to circuits from transient voltage surges. The SMBG70CAHE3/5B is a type of TVS - Diode, and is invaluable for protecting circuits from overloads, short circuits, and lightning strikes. This article will examine the application fields and working principle of the SMBG70CAHE3/5B.

Application fields

Given its impressive protection capabilities, the SMBG70CAHE3/5B is suitable for a variety of applications. This diode offers superior protection from transient surges caused by lightning and switching operations. It is often used in communication systems, such as digital TV, cable TV, and cell phone base stations; in computer networks, like xDSL, video streaming, and internet data transmission; and in other high-frequency electronic products. In addition, the SMBG70CAHE3/5B has excellent surge-protecting capabilities against ESD (Electrostatic Discharge) and EFT (Electrical Fast Transients) caused by voltage surges, as well as excellent clamping characteristics for static and transient voltages.

Working principle

The SMBG70CAHE3/5B is widely used in high-frequency electronic applications because of its excellent clamping characteristics for both static and transient voltages. The device has two main sections: the TVS diode and the surge protection circuit. The diode is a low-cost semiconductor component that is designed to protect circuits from transient voltage surges. It is typically made up of a junction diode, a transistor, and a surge-protection circuit.

The TVS diode works by clamping high-voltage transients to safe levels. When a surge occurs, the diode activates and sets up a high-resistance, low-impedance path for the surge current to flow. The high-resistance components in the diode dissipate the voltage to safe levels. This stops the surge current from damaging the other components in the circuit.

The surge protection circuit is designed to protect circuits from ESD and EFT events. It works by monitoring the circuit and its environment for any transient voltage surges. When the device detects a surge in voltage, it quickly switches to a high-impedance state and blocks any further current flow from the surge. This protects sensitive electronics from damage caused by ESD and EFT.

The SMBG70CAHE3/5B is a popular TVS - Diode that offers superior protection from transient surges caused by lightning and switching operations. It has excellent protection capabilities from static and transient voltages, as well as ESD and EFT disturbances. This type of diode is used in many high-frequency applications, such as digital TV, computer networks, and cell phone base stations.