IRKU71/12A

Current - On State (It (RMS)) (Max):	115A
Base Part Number:	KU71
Package / Case:	ADD-A-PAK (3 + 4)
Mounting Type:	Chassis Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Current - Hold (Ih) (Max):	200mA
Current - Non Rep. Surge 50, 60Hz (Itsm):	1785A, 1870A
Current - Gate Trigger (Igt) (Max):	150mA
Voltage - Gate Trigger (Vgt) (Max):	2.5V
Series:	--
Current - On State (It (AV)) (Max):	75A
Voltage - Off State:	1.2kV
Number of SCRs, Diodes:	2 SCRs
Structure:	Common Cathode - All SCRs
Moisture Sensitivity Level (MSL):	--
Part Status:	Obsolete
Lead Free Status / RoHS Status:	--
Packaging:	Bulk

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Thyristors - SCRs - Modules: IRKU71/12A application field and working principle

The IRKU71/12A is a three-phase thyristor, which is one of the most important types of power semiconductor devices. Thyristors are considered essential to the modern era because they are used to control electric power in power switching applications. The application fields of IRKU71/12A include inductive heating, phase control of electric motors, current regulation in cannons and switching of power semiconductor inverters.The IRKU71/12A thyristor is composed of three thyristors connected through a common mounting base. The thyristors are connected in the inverse parallel manner, so that the load voltage is connected with the anode on one thyristor, cathode on another thyristor, and gate on the third thyristor. Each thyristor has its own gate lead. Furthermore, there is an additional gate lead that uses a common gate control voltage for all three thyristors, which helps to synchronize the gate signals for fast switching.The working principle of the IRKU71/12A thyristor is based on the principle of trigonometric intersection switching. When an appropriate gate signal is applied, the junction of two thyristors is allowed to be switched on or off. This process provides a low-voltage, high-current control path for the load, while maintaining a low on-state voltage drop.The IRKU71/12A is a cost-effective thyristor module, and it has a solid-state, high-reliability design. Its base is also equipped with diodes and snubbers to reduce surge current and voltage stress, as well as thermal differential stresses. The device is also capable of providing fast switching, high power, and high surge current.In conclusion, the IRKU71/12A is a three-phase thyristor module that is used in power switching applications and is suitable for inductive heating and phase control of electric motors. The working principle of the device is based on trigonometric switching, and its high reliability design, low on-state voltage drop and high surge current capability make it a relatively cost-effective approach for switching power semiconductor inverters and cannons.

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