1SMB90AT3G

TVS (Transient Voltage Suppressors) diodes are specially designed components that protect electrical components against potential damage caused by high surge and transient voltage. 1SMB90AT3G is a series of bidirectional TVS diodes, which can serve various applications. The purpose of this article is to introduce the application field and working principle of 1SMB90AT3G.

1SMB90AT3G Application Field

1SMB90AT3G bidirectional TVS diodes are designed for broadcast and communication industry as well as automotive applications. Specifically, they protect automotive electronic equipments, such as automotive power systems, infotainment systems and ECU/MCU from destruction by diverting and absorbing destructive surge currents that enter the circuit. In broadcast and communication industry, these diodes provide efficient protection for devices, such as cable receivers, modems, networking equpment and wireless communication facilities.

1SMB90AT3G Working Principle

1SMB90AT3G diodes are made up of two back-to-back connected zener diodes. Under normal DC operating conditions, the zener diodes are in reverse breakdown bias, and hence, no current flow through the diode. If the voltage exceeds the breakdown voltage of the TVS diode, the zener diodes become forward biased and change their breakdown voltage in a predictable way, allowing the TVS diode to absorb the applied surge current safely without being damaged. In addition, the bidirectional feature allows this series of TVS diodes to be used for both positive and negative transient voltage protection. To sum up, due to their superior performance in protecting components from surge voltage and current, 1SMB90AT3G bidirectional TVS diodes can be found in various sectors of electronic industry.