• Products

    Home > Products Guide > Welding diodes

    Welding diodes

    Welding diodes

    Welding diodes are designed for medium and high frequency welding equipment and optimized for high current rectifiers. The on-state voltage is very low and the output current is high.
    ABB is selling both normal housed and housing-less welding diodes. The latter is becoming more and more important in high current welding applications for joining of high refractory materials.


    Medium frequency
    Part number
    VRRM (V)IFAVM (A)IFSM (kA)Package* (mm)
    5SDD 71X0200200711055.060/44
    5SDD 0120C0200200 1100085.075/57
    5SDD 71B0400 / 
    5SDD 71B0200
    5SDD 71X0400400711055.060/44
    5SDD 0120C04004001135085.075/57
    5SDD 92Z0401400925060.053/47
    5SDD 0105Z04014001050270.056/49.5
    5SDD 0135Z04014001350085.063.5/57


    High Frequency
    Part number
    VRRM (V)IFAVM (A)IFSM (kA)Package* (mm)
    5SDF 63B040040062664463/44
    5SDF 63X040040062664461/44
    5SDF 90Z040140090414853/47
    5SDF 0102C0400400101597075.5/57
    5SDF 0103Z0401400102665456/49.5
    5SDF 0131Z0401400130587063.5/57

    *Note: maximum diameter / pole-piece diameter