1.5SMC39AT3

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

TVS-Diodes is a type of surge protector that is used to protect sensitive electronic components against electrical surges and high energy transients in power systems. This article discusses the application field and working principle of 1.5SMC39AT3, a widely used TVS-Diode.

1. Introduction

TVS-Diodes, or Transient Voltage Suppressors, are designed to protect sensitive electronic circuits from electrical surges, transients and overvoltage events. The term “transient” refers to surges of electrical energy that can reach peak levels much greater than the normal operating voltage of the circuit and last only for a brief moment. TVS-Diodes are designed to channel this excessive energy away from the circuit, effectively dissipating it as heat, thus protecting the electronic components from overvoltage and other damaging events.

2. 1.5SMC39AT3

The 1.5SMC39AT3 is a fast recovery type DO-214AA package TVS-Diode that has a standoff voltage of 15V and a break down voltage of 26.7V. It has an 8.3A surge current and a 110ns response time. It has an operating temperature range of -65°C to 175°C. The 1.5SMC39AT3 is a widely used TVS-Diode due to its robustness and reliability.

3. Application Field

The 1.5SMC39AT3 is commonly used in automotive electronics, industrial equipment, consumer electronics, data communications systems, and telecommunications equipment. It is typically used to protect circuits against ESD (electrostatic discharge) and EFT (electrical fast transients) events. It is also used to protect circuits from overvoltage and high inrush current events.

4. Working Principle

When the voltage across a TVS-Diode reaches its breakdown voltage (V BR ), the diode will conduct, allowing current to flow through it and thus acting as a short circuit. The voltage across the diode will be limited to a safe level and any excess energy will be dissipated as heat, protecting the sensitive components in the circuit from overvoltage and other damaging events. When the voltage decreases below the V BR , the diode will block the flow of current, thus acting as an open circuit.

5. Conclusion

The 1.5SMC39AT3 is a widely used fast recovery type DO-214AA package TVS-Diode. It is used in a variety of electronic circuits, most commonly for ESD, EFT, overvoltage and inrush current protection. It works by conducting current and limiting the voltage to safe levels when the V BR is reached, and blocking the flow of current when the voltage drops below V BR .

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