SA43-E3/54

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

SA43-E3/54 TVS - Diodes Application field and Working Principle

TVS - Diodes, also called Transient Voltage Suppressors, are diodes designed to protect sensitive electronic components from transient overvoltage. The SA43-E3/54 is a popular TVS - diode offering high speed and ultra low capacitance.

Application field

SA43-E3/54 TVS - diodes are suitable for high-speed/low capacitance applications and are well suited for protecting high speed data port signals from electrostatic discharges. Examples in such application include portable media players, cell phones, digital cameras, and laptop computers. The SA43-E3/54 is also popular in automotive applications, such as protecting data buses, ECU’s, and control units from transient overvoltage.

Features

SA43-E3/54 TVS - diodes feature ultra low capacitance of 2.5 pF, a fast response time of 1.5 ns, an operating voltage range from 5 to 24 volts, an ESD rating of 25 kV, and a maximum clamping voltage of 42 volts. The series is available in a variety of packages including D-PAK, SOT package, SMDs, and bulk components for automated assembly.

Working Principle

The SA43-E3/54 diodes use a thermally coupled diode configuration to provide reliable protection for electrical circuits. The thermally coupled diodes are configured in a series, with one diode being a high-speed active device, while the other diode is a slower-acting thermal device. This series-configuration provides robust protection against transient overvoltage.

When a transient voltage passes through the diode, the faster-acting diode begins to conduct current. The resulting current flow through this device heats up the thermal diode. Once the thermal diode reaches its breakdown voltage, it begins to conduct current, thus clamping the current and preventing further overvoltage.

Conclusion

The SA43-E3/54 TVS – diode is a popular diode that is suitable for high-speed/low capacitance applications. The SA43-E3/54 features high speed and ultra low capacitance, fast response time, and a variety of package configurations, allowing for versatile implementation in a wide range of applications. The diodes use a thermally coupled diode configuration which clamps the current and prevents further overvoltage.

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