Rectifier diodes

The Powerex R700 and R701 general-purpose semiconductor rectifier diode series features high current ratings up to 550 A and high voltage ratings to 4400 using an industry-standard housing.

The series suits applications such as welding, battery charging, electrochemical refining, metal reduction and industrial high current rectification.

The standard diode housing features the ¾" stud mount with 16 UNF-2A thread pitch and flexible 245 mm long top lead. Stud top connections and flat flange bases are available as options. The special ceramic section used for the diode body gives good high-voltage creepage and strike paths.

For high reliability and good thermal characteristics, compression bonded encapsulation is used for the silicon diode disc which leads to very low thermal resistance, low forward voltage drop and a strong mechanical connection.

The three current/voltage grades available for the rectifiers are 300, 450 and 550 A (average); 7, 8 and 10 kA half cycle surge; 1600, 2600 and 4400 V repetitive peak reverse voltage ratings.

Both normal and reverse polarity semiconductor diode types are available with this rectifier series.