1.2kV SiC Current Limiting/Regulating Devices Intended for Protection and Current Regulation Applications

PublishTime： 2021-07-18 Article Source：CALY

Villeurbanne-France, January 25, 2017: CALY Technologies, manufacturer and supplier of specialty SiC devices, releases a family of SiC Current Limiting Devices (CLD) intended for protection and current regulation applications.

CLDs are two-terminal, SiC, monolithic, discrete devices able to keep the current through them constant once their voltage drop goes above a given threshold around 7V to 10V. For lower voltages, CLDs behave like a small constant resistor.

Depending upon construction, CLDs can be unidirectional or bidirectional, allowing their use in DC as well as AC applications.

Unlike JFETs, CLDs are optimized to sustain much higher overload (short-circuit) conditions without degradation, even under repetitive stresses with applied voltages up to 1.2kV. Additionally, CLDs are plug-and-play devices as no driving nor any adjustments are needed to be performed by the final user.

Typical CLD applications comprise lightning and surge protection of power or data busses, circuit breaker assistance, constant current battery pack protections and driverless LED current regulation.

Their robustness, thanks to their manufacturing using in Silicon Carbide (SiC) semiconductors, makes them ideally suited for high-reliability markets such as Aerospace, Transportation and EV, Data Centers, Medical and Smart Grid.

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