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News Article

IXYS: Three New Optimised Higher Current 1.8kV Thyristors


IXYS UK Westcode Ltd (parent company IXYS Corporation) has introduced three new 1.8kV pressure contact phase control thyristors with increased power density.

The company says the new improved designs offer more than 40% increase in current rating over existing designs, while retaining the overall same package footprint. 

The improvement in performance is achieved by maximising the die size and an improved package design. The new silicon dice are bonded and encapsulated in fully hermetic ceramic packages with a novel design that have reduced thermal resistance, and the dice have enhanced electrical performance.

The new 2.2 inch (56mm) die device has an average current rating of 2600A and the package has a 2 inch (50mm) electrode contact diameter, with an industry standard overall diameter of 3 inches (74mm). 

The new 2.7 inch (69mm) die devices have average current ratings of 3175A to 3565A and the packages have a 2.6 inch (66mm) electrode contact diameter, with industry standard overall diameters of 4 inches (101.5mm).

"These three new device options fit in the mid-range current rating of IXYS' product portfolio and have the highest ever power density offered in these footprints. The larger die sizes offer our customers the best performance and value for their money and continue the IXYS strategy to supply products with more power and less package. Higher currents in smaller packages allow our customers to also optimise their designs to use less material and so save on cost as well as reduce the impact on the environment," commented Frank Wakeman, IXYS UK's Marketing and Technical Support Manager.

The 2.2 inch (56mm) die device is available in an industry standard 1 inch (26mm) thick package and two voltage grades. Designations are: N2600MC160 (Vdrm/Vrrm 1600 Volts), N2600MC180 (Vdrm/Vrrm 1800). The 2.7 inch (69mm) die device is available in two industry standard package thicknesses, 1 inch (26mm) and 1.4 inch (35mm), plus two voltage grades. Designations are: 1 inch (26mm) thick package N3565HA160 (Vdrm/Vrrm 1600 Volts), N3565HA180 (Vdrm/Vrrm 1800) and 1.4 inch (35mm) thick package N3175HE160 (Vdrm/Vrrm 1600 Volts), N3175HE180 (Vdrm/Vrrm 1800).

Typical applications include soft starters, DC drives, and all controlled rectifier applications requiring devices in this power rating.


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