SP724AHT

Transient Voltage Surge Suppressors (TVS) have become ubiquitous instruments in the electronics industry. It has become a critical component of any of the cutting-edge A/V equipment and has been integrated into automotive, consumer, and industrial equipment for power protection and voltage regulation. As the surge of power requirements of electronic components continually increases, the protection of these components demands increasingly advanced designs.

One such design is the SP724AHT mixed technology from SEMIKRON. It is a unique combination of Si and SiC chip technologies in one integrated circuit, offering extra-low on-state resistance and exceptionally fast switching capabilities. This high speed device can support a wide range of frequencies from 150 kHz to 1 MHz, which makes it suitable for a variety of applications, enabling the SP724AHT to be used in automotive, consumer, or industrial applications.

The SP724AHT operates as a shunt device, whose purpose is to dissipate or divert electrical energy so that it does not interfere with the operation of sensitive components. The SP724AHT is designed to protect sensitive circuits from over-voltage transients arising from electrostatic discharges, voltage surges in the distribution system, or the adverse effects of common-mode currents. The SP724AHT is designed to divert excess voltage away from sensitive components, thus minimizing their exposure to damaging levels. It also serves to protect sensitive components from electromagnetic interference, providing enhanced EMI immunity.

The operating principles of the SP724AHT involve a unique combination of MOS/JFET technology with an SCR/SiC combination. The MOSFET operates as a semiconductor switch, while the JFET switches the gate\'s voltage when the voltage exceeds a preset level. The SCR (silicon controlled rectifier) is designed to conduct once triggered and then self-latch, providing overvoltage protection until a manually reset operation can be implemented. The combination of MOSFET and JFET switches, along with the SCR, makes this chip capable of detecting and interrupting voltage surges faster than a circuit breaker.

The SP724AHT also includes a built-in temperature sensor that helps to optimize the performance of the device during temperature changes and protect against over-temperature conditions. With its integrated SiC technology, it can dissipate up to a maximum of 200A of current with 100% avalanche capability and its higher power capability also ensures greater protection and reliability.

The SP724AHT is designed to work with both positive and negative polarity transients and is capable of withstanding voltage transients up to 3500V in both directions. It has a wide range of operating temperature (from -55°C to 175°C) and long term reliability which makes it ideal for a variety of automotive, consumer, and industrial applications.

In conclusion, the SP724AHT is a versatile device with a wide range of applications. Its high-speed switching capabilities and low on-state resistance make it ideal for a variety of industrial, automotive, and consumer applications. Its integrated temperature sensor ensures optimized operation even during extreme temperatures, and its built-in avalanche protection ensures greater reliability in an ever-changing environment. It is thus an ideal solution for ensuring safe operation and reliable protection of sensitive components against over-voltage transients.