‘Wespack’ rectifier diodes have record current rating

22nd March 2017

IXYS

Enaie Azambuja

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IXYS has announced that its wholly owned UK subsidiary, IXYS UK Westcode, launched a new range of ‘Wespack’ rectifier diodes in ultra-compact housings. The diodes are in a new package size which offers maximum power density without compromising on performance and quality. Available with voltage from 1.2 kV to 2.8 kV and average current ratings from 1730A to 2340A at a case temperature of 55C, these new diodes offer the highest possible power density for diodes in this class.

The new device uses IXYS proprietary device design and is packaged in a low profile ‘Wespack’ outline. The structure offers both optimised transient thermal conditions and overall robustness while limiting the overall package size.

The optimal thermal design enhances performance and presents excellent transient thermal and surge current ratings, while the low profile package minimises the thermal path from the silicon to the heat sink. At 135 grams, the new package is 60% lighter and smaller than older designed parts with the same die and offers 13% higher average current rating.

“These new diodes are the ultimate in packaging for minimising material and maximising performance and represent a continuation of IXYS’ philosophy of less package and more power. For the customer they are not only smaller with improved rating, when compared to old designs, but also lower cost".

"Using less material is a bonus when trying to minimise the environmental impact of power system design realisation,” commented Frank Wakeman, IXYS UK’s Marketing and Technical Support Manager.

The new diodes are available in six voltage classes at three current ratings. Designations are W2340JK120 for the average current 2340A and 1200V device, W2340JK150 for the average current rating 2340A and 1500V device, W1980JK180 for the average current 1980A and 1800V device, W1980JK220 for the average current rating 1980A and 2200V device, W1730JK240 for the average current 1730A and 2400V device and W1730JK280 for the average current rating 1730A and 2800V device.

Typical applications include front end rectifiers and bridges, DC power supplies, utilities and chemical power supplies, particularly in applications where weight and performance need to be optimised.