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CISSOID introduces a High Temperature 80V Quad Diode.


Mont-Saint-Guibert, Belgium – March 4 th , 2015.

CISSOID, the leader in high temperature semiconductor solutions, releases CHT-ELARA, a high-temperature 80V quad diode. This new device includes four independent and dielectrically isolated diodes that can be connected in different configurations: in series, in parallel for higher current, or in a rectifier bridge. Each individual diode can sustain a reverse voltage of 80V, has a maximum forward current of 900mA at 225°C and is suitable for operation from -55°C up to +225°C.


Monolithic integration provides better matching and thermal tracking between diodes while dielectric isolation offers design flexibility.

CHT-ELARA is packaged in a small hermetically sealed 5x5.5mm TDFP16 ceramic package, featuring a heat slug to achieve a junction-to-case thermal resistance as low as 11°C/W. High integration level and enhanced thermal characteristics make CHT-ELARA an optimal solution for power rectification, e.g. in flyback or forward DC-DC converters and gate drivers.

CHT-ELARA diodes have a low junction capacitance of 15pF at 25V reverse voltage, making them ideal for AC signal rectification, for example in a full-bridge rectifier easily implemented with a single chip. The diodes have a forward voltage of 0.33V for a forward current of 1mA at 225°C. They present a leakage current limited to 2µA at 80V reverse voltage and 225°C, making ELARA very suitable for high temperature voltage multipliers  (charge-pump). With a forward current of 450mA for a forward voltage of 1.5V at 225°C, ELARA can also be used in voltage clamping applications.

Pierre Delatte, CTO at CISSOID, commented: “CHT-ELARA is a very flexible product that can be used across the full temperature range (-55°C to +225°C) as a full bridge rectifier, a single diode, a clamping device, or any other configuration (e.g. common cathode, common anode). It provides the robustness and extended life time required in Aeronautics, Oil & Gas and Industrial applications.”