SMBG54CAHE3/5B Circuit Protection

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SMBG54CAHE3/5B application field and working principle

TVS (Transient Voltage Suppression) diodes are designed to protect sensitive electronic equipment from voltage spikes. They provide an efficient and cost effective form of protection. SMBG54CAHE3/5B series of TVS devices is a low capacitance series of devices that can withstand repetitive ESD (electrostatic discharge) pulses up to 25kV contact discharge. These TVS diodes protect two- and three- sport connections and can be used in either AC or DC line protection applications. They are suitable for applications such as computers, servers, instrumentation, consumer electronics, and automotive electronics.

The SMBG54CAHE3/5B series of TVS diodes is designed with a breakdown voltage of 18V for AC lines and 3.5V for DC lines. The diodes feature a very low clamping voltage of 1.2V (maximum) and can withstand a surge current of 25A (maximum). The diodes also feature ultra-low capacitance of only 0.4pF (typical), making them ideal for protection of high speed data lines such as USB 3.0 and IEEE 1394 (a.k.a. FireWire).

The SMBG54CAHE3/5B series of TVS diodes works by providing a low resistance path for any overvoltages or surges which might occur on a circuit. This path then redirects this surge of energy away from the sensitive electronic components that it is meant to protect. The TVS diode clamps the voltage below a certain threshold level and prevents damage to the protected circuit.

The SMBG54CAHE3/5B series of TVS diodes is available in a number of packages such as SOD-323, SOT-23, SOT-323, SC-70, and SMA. The devices are RoHS compliant and are rated for a maximum operating temperature of 105°C and a maximum storage temperature of 150°C.

In conclusion, the SMBG54CAHE3/5B series of TVS diodes is an excellent choice for protecting sensitive electronic equipment from voltage spikes and surge currents. The diodes feature a low clamping voltage, low capacitance, and various package options, making them ideal for a wide range of applications.

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