TISP4240H3LMR

Protection devices like surge protection diodes (SPDs) are broadly employed in power, data and communication systems to prevent failure of downstream components that may be caused by fault transients such as short-term secondary bursts or electrostatic discharges. Thyristors are a special type of semiconductor devices that can be effectively integrated with surge protective circuits to help mitigate the surge incidents. The TISP4240H3LMR is a Discrete Thyristor Surge Protection part specifically designed for downstream line protection against very high voltage and current impulse protection.

Application Field of TISP4240H3LMR
The TISP4240H3LMR is mainly used for downstream line protection of power, data and communication systems for protecting against fault transients, such as Electrostatic Discharge (ESD), lightning and high-energy electrostatic transients. It is widely employed in the latest automotive electronic systems, automotive safety systems, consumer electronics, industrial systems, medical, communication and lighting applications for its superior performance and extended lifetime reliability.

Working Principle of TISP4240H3LMR
The TISP4240H3LMR is a bidirectional Thyristor Surge Protection device (TSPD), featuring low reverse leakage current and low capacitance. It is specially designed for high-speed transient protection against ESD, lightning and high-energy electrostatic transients. The TSPDs are an ideal solution for providing reliable short-circuit protection and accurate current measurement. In operation, when the voltage reaches the TISP4240H3LMR’s set voltage threshold level, the thyristor will trigger. It will then fire off a spark gap and form a low input impedance network, limiting the flow of any transient current. The spark gap will temporarily shunt the input and output nodes, while also providing a safe path for the current to flow. The TISP4240H3LMR also features a minimal capacitance and reversed leakage current, thereby maintaining its high-speed transient responses.

The TISP4240H3LMR is built with ultra-low capacitance (3pF typical), and low reverse leakage current up to 1uA. The part also offers a wide operating voltage range from 8 to 60V, withstanding potential surges up to 7000V. It is available in an SOT-23 package with standard and “hot” pin configuration. The TISP4240H3LMR is equipped with a high-speed temperature compensation mechanism and improved power integration technique, providing reliable protection against high-current pulses. Its temperature tracking monitoring feature enables the device to respond quickly and accurately. The part is halogen free and RoHS compliant, making it an ideal solution for applications where environment-friendly solutions are desired.

In conclusion, the TISP4240H3LMR is an effective Discrete Thyristor Surge Protection device designed for line protection against fault transients. It is built with ultra-low capacitance and reverse leakage current, providing reliable short-circuit protection and accurate current measurement. The part is widely employed in various industrial, lighting, automotive, medical, and communication applications. It is halogen free and RoHS compliant, and provides excellent temperature tracking monitoring feature.