SMB8J15CAHE3/5B Circuit Protection

TVS (Transient Voltage Suppressor) diodes protect electronic devices during power surges. The SMB8J15CAHE3/5B diode is an ultra low capacitance TVS diode able to protect signal lines from 2.0 to 5.5 volts. It is designed for use in USB2.0 and HDMI cable applications, as well as high speed data lines.

The SMB8J15CAHE3/5B has two internal thyristors that provide protection from transient over-voltages as well as suppression of high frequency noise passing along the signal line it is protecting. The diode has a working voltage of 8.0 volts, which along with its relatively low capacitance of 1.5pF makes it suitable for protecting a variety of low voltage applications.

This TVS diode is also able to provide protection against electric over-stress (EOS) conditions that can occur as a result of static discharge. The diode has both over-voltage and over-current protection, ensuring that no damage will occur to the protected device due to these conditions. Additionally, the diode\'s construction ensures it is able to handle reverse voltages up to 5.5V.

The diode also offers protection from high frequency electromagnetic interference (EMI), making it suitable for use in high-speed data applications. The device has an impressive rejection rate of greater than 40dB at high frequencies up to 1GHz. This provides assurance that any EMI from external devices will be filtered out before it ever reaches the protected device.

When using the SMB8J15CAHE3/5B diode, it is important to be aware of its maximum reverse voltage and total power dissipation. The maximum reverse voltage of 5.5 volts must not be exceeded, as it may cause permanent damage to the device. Additionally, the total power dissipation must not exceed 8 watts. Exceeding this power rating could result in device failure.

The SMB8J15CAHE3/5B is a popular choice among manufacturers due to its low capacitance and impressive protection capabilities. It is designed to protect devices from over-voltage and EMI, while still providing excellent signal integrity. This makes it an ideal choice for a variety of low voltage applications, especially those dealing with high speed data lines.