VTVS8V5GSMF-HM3-18 Circuit Protection

TVS-Diodes are used for overvoltage protection and for the prevention of damage to electronic circuits. TVS-Diodes have transistors which act as semiconductor switches and can clamp off large voltages before they reach other parts of the circuit. The VTVS8V5GSMF-HM3-18 is a multilayer transient voltage suppression (TVS) diode with a power dissipation of 8V and a clamping voltage of 18V.

The VTVS8V5GSMF-HM3-18 is designed to protect 2.25V to 6.5V applications such as storage servers, telecom/datacom/networking, HVAC, embedded microcontrollers, and power supplies, from overvoltage conditions such as electrostatic discharge, surge and lightning strikes.

The working principle of the VTVS8V5GSMF-HM3-18 is as follows: When a transient voltage surge (ESD) is applied to its terminals, the diode is forward-biased and some current flows through it. The level of the current depends on the voltage level of the incoming surge. The diode will start conducting at around 18V and at this point the current flows through the diode will start to increase as the voltage increase. When the current reaches its peak and the voltage reaches the breakdown voltage, the diode will tend to avalanche. At this point, the internal stress of the VTVS8V5GSMF-HM3-18 will begin to cause the diode to start to clamp off the transient voltage surge.

When a TVS-Diode is conducting, the power dissipated by it is in the form of heat. The VTVS8V5GSMF-HM3-18 is designed to dissipate up to 8V of power in its maximum load conditions. This is why it is important to choose the right TVS-Diode for the application. It is also important to remember that the higher the peak current the diode can handle the better it is for the application, since it will be dissipating more heat.

In summary, the VTVS8V5GSMF-HM3-18 is a multilayer transient voltage suppression diode with a power dissipation of 8V and a clamping voltage of 18V. It is designed to protect 2.25V to 6.5V applications from overvoltage conditions such as electrostatic discharge, surge and lightning strikes. Its working principle is based on forward biasing and avalanche breakdown. It is designed to dissipate up to 8V of power in its maximum load conditions.