TVS348SM Circuit Protection

Due to market price fluctuations, if you need to purchase or consult the price. You can contact us or emial to us:   sales@allicdata.com

TVS348SM is a type of TVS diode that is fairly new on the market. It is a voltage controlled bidirectional device that provides a low capacitance ESD protection for high speed data lines from over-voltage spikes. It is designed to handle up to 8 kV of ESD pulse and is optimized for implantation in a dual-in-line package.

Application field

Due to its low capacitance and fast response, the TVS348SM is ideal for protecting a variety of digital interface lines including USB 3.0, Ethernet, IEEE 1394 and others. It can also be used to protect I/O lines in digital systems and LAN lines from ESD damage. Additionally, the device can be used to protect communication lines such as automotive CAN bus and RF receivers from ESD.

Furthermore, it can be used to protect sensitive MCU level microcontroller and ASIC logic from voltage surges and EFT attacks. It is also ideal for use in power systems, where it can be used to protect against overvoltage events such as lightning, load dump, etc. Finally, it can be used to protect wireless communication systems from ESD.

Working principle

The TVS348SM is a voltage-controlled bidirectional device. It utilizes the avalanche breakdown of the silicon junction to respond to over-voltage spikes, which are often generated by electrostatic discharges (ESD) or electrical fast transients (EFT). The device is typically implemented in a dual-in-line (DIL) package.

When an electrostatic discharge or an electrical fast transient occurs, the voltage across the device rapidly increases and the avalanche effect triggers the device to conduct current from anode to cathode. This reduces the overvoltage spike, thus protecting the circuit from damage. Additionally, the low capacitance and fast response time of the device ensures that the ESD pulse is removed before it has any opportunity to become damaging. When the overvoltage is removed, the device stops conducting and returns to its normal state.

Due to its small size, the TVS348SM can be easily and efficiently implemented into circuit designs, with minimal board layout modifications needed. It can also be used in conjunction with other protection circuits, such as TVS diodes, to create a multilayer protection structure, which offers comprehensive ESD protection.

The specific data is subject to PDF, and the above content is for reference