SMB8J14CHE3/5B

TVS Diodes, also known as Transient Voltage Suppression Diodes, are an essential component for controlling or counteracting sudden changes in power levels and safeguarding electronic circuits from damage. The SMB8J14CHE3/5B is a type of TVS diode, and this article will explain its application field and how it works.

The SMB8J14CHE3/5B is a bidirectional, low capacitance, and fast-acting TVS diode. It is designed to protect surface mount applications such as high-speed data lines and other sensitive signals from electromagnetic interference and electrostatic discharge (ESD). This type of diode is typically rated for an ESD protection level of 8kV Contact and 15kV Air. It also has a response time of less than 1 ns, making it ideal for high-speed applications, and it is available in the common SOD882 (SC-89) SMT package.

The SMB8J14CHE3/5B can be used in a variety of applications where transient overvoltage and ESD protection is necessary. These include power supply systems, automotive electronics, industrial controls and robotics, datacom, and consumer applications. It is also often used in products that need to pass international EMC and safety standards.

The working principle of the SMB8J14CHE3/5B is based on its bidirectional ESD protection circuit. The device has two high-speed low-capacitance silicon diodes, connected in antiparallel configuration. When a transient voltage is applied, these diodes will clamp the peak voltage to a safe level, and the current will then be diverted to ground, thus providing an ESD protection circuit that is effective in both directions.

The SMB8J14CHE3/5B also includes an ESD protection circuit that functions to reduce the capacitance between the two terminals. This reduces the time to decay the initial surge current and thus reduces the overall peak power. Additionally, it also reduces the capacitance to ground which is important in cases of high dynamic voltage transients.

In summary, the SMB8J14CHE3/5B is a type of TVS diode designed to help protect electronic circuits from transient overvoltages or ESD damage. It is most commonly used in applications where transient protection and EMC compliance are both required, such as in automotive electronics, consumer products, industrial robotics and control systems, and power supplies. The device works by utilizing low capacitance silicon diodes connected in antiparallel configuration, which quickly and reliably stop the flow of surge current before it causes any damage to the electronic components.