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Integrated gate-commutated thyristors (IGCT)

All Hitachi Energy IGCTs (Integrated Gate-Commutated Thyristors) are press-pack devices. They are pressed with a relatively high force onto heat-sinks which also serve as electrical contacts to the power terminals.

The IGCT's turn-on/off control unit is an integral element of the component. It only requires an external power supply and its control functions are conveniently accessed through optical fiber connections. The device's control power consumption typically ranges from 10 - 100 W.

The IGCT is optimized for low conduction losses. Its typical turn-on/off switching frequency is in the range of 500 hertz. However, in contrast to the GTO, the upper switching frequency is only limited by operating thermal losses and the system's ability to remove this heat. This feature, in conjunction with the device's fast transition between on and off state, enables short on-off pulse bursts with switching frequencies of up to 40 kHz.

IGCTs require a turn-on protective network (in essence an inductor) to limit the rate of current rise. However, in contrast to the GTO, the turn-off protection network is optional. It can be omitted at the price of a somewhat reduced turn-off current capability.

Asymmetric IGCT devices are single devices optimized for snubberless turn-off operation. The associated recovery diodes can be chosen from our fast recovery diodes product range.

Reverse conducting IGCTs are monolithical integrated freewheeling diodes. They are optimized for snubberless turn-off conditions.

The reverse blocking IGCT is optimized for the lowest conduction losses and highest turn-off current capability. 

Part number VDRM (V) VDC (V) ITGQM (A) ITAVM (A) Package* (mm) Plecs model Offer
5SHY 35L4520 4500 2800 4000 1700 85/26 XML Request
5SHY 35L4522 4500 2800 4000 2100 85/26 XML Request
5SHY 45L4520 4500 2800 4500 1430 85/26 XML Request
5SHY 55L4500 4500 2800 5000 1870 85/26 XML Request
5SHY 65L4521 New 4500 2800 6500 2660 85/26 XML Request
5SHY 65L4522 New 4500 2800 6000 2260 85/26 XML Request
5SHY 50L5500 5500 3300 3600 1290 85/26 XML Request
5SHY 42L6500 6500 4000 3800 1290 85/26 XML Request


*Note: Pole-piece diameter / Housing height 

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