MART100KP45CAE3

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TVS (Transient Voltage Suppression) diodes are an essential part of the electric and electronic equipment. They are designed to protect any kind of electronic component from damages that could be caused by transients. The MART100KP45CAE3 is one such protective device. This article looks more closely into what kind of application it has and how it works.

The MART100KP45CAE3 is a surface mount TVS diode used for ESD, EFT and lightning protection on telecom and network applications, and offers complete protection against voltage transients which could damage a circuit. The TVS contains two diodes connected in an antiparallel configuration. In this case, the two parts are a standard diode and a Zener diode which form a two diode clamped arrangement providing full protection against transients.

This TVS diode can suppress up to 1500 watts of power surge for 8/20 μs duty cycle. It is also designed to withstand the high power surge levels associated with a wide range of operating and environmental conditions. With its high-current surge capability, it is ideal for protecting high-speed data lines, PDU ports, PCs, and other sensitive electronic communications systems.

The MART100KP45CAE3 operates according to the ‘avalanche breakdown’ principle. It requires a voltage to reach a certain threshold value before its operation starts. The threshold voltage level is usually set according to the local conditions where the TVS diode is intended to be used. When a transient strikes, the avalanche effect begins at the diode junction, and a low resistance electrical path is established, diverting the excess current.

This process also redistributes the energy of the transient over the entire circuit, protecting delicate components from overvoltage and the excessive current. During normal operation, the diode acts as an open circuit, with leakage current less that 1 µA.

The MART100KP45CAE3 is available in a two-legged ‘SMA’ package, and is designed to stand up to a wide variety of conditions. Its operating temperature range is between -55°C to 150°C, with electrical characteristics specified over the same temperature range. The device also has a high reliability rating, with limited endurance capabilities to withstand temperatures up to 175°C.

The MART100KP45CAE3 is an exemplary member of the TVS diode family and an ideal solution for protecting any equipment from the dangers associated with voltage transients. It is most suitable for telecom and network applications, but can also be used for ESD, EFT, and lightning protection in other applications if the right threshold voltage is set.

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