IRKH26/04A

Series:	--
Packaging:	Bulk
Lead Free Status / RoHS Status:	--
Part Status:	Obsolete
Moisture Sensitivity Level (MSL):	--
Structure:	Series Connection - SCR/Diode
Number of SCRs, Diodes:	1 SCR, 1 Diode
Voltage - Off State:	400V
Current - On State (It (AV)) (Max):	27A
Current - On State (It (RMS)) (Max):	60A
Voltage - Gate Trigger (Vgt) (Max):	2.5V
Current - Gate Trigger (Igt) (Max):	150mA
Current - Non Rep. Surge 50, 60Hz (Itsm):	400A, 420A
Current - Hold (Ih) (Max):	200mA
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Chassis Mount
Package / Case:	ADD-A-PAK (3 + 2)

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The IRKH26/04A Thyristor module is a type of SCR (silicon controlled rectifier) that forms an integral part of a main electronic power surge-protective switch system. It has strong ability of peak current, handles negative dv/dt and is especially suitable for AC circuit applications such as motor control and frequency control.Operating PrincipleThe IRKH26/04A features two thyristors in series connection for the main control unit. When an AC power supply is applied to the module, a gate voltage is applied to the gate of the first SCR. This activates the gate and a current path is created to the next SCR through the so-called “positive boost” operation. When the current reaches the required level, the second SCR turns on and a complete AC current path is established.The IRKH26/04A module can be used to protect the supply lines against voltage fluctuations and overloading by absorbing the power surge. The module has built-in gate current limiting and gate control circuit, making it highly reliable. Additionally, the module is immune to radio frequency interference (RFI).Application FieldThe IRKH26/04A is typically used for motor control applications in wide ranging industries. For example, it can be used for motor control operations in pumps, fans, AC servos and in frequency control applications. In addition, the module is also suitable for applications where negative dV/dt operations is necessary.The module can also be used for power electronics applications, such as welding machines. The module can be used to provide power surge protection in industrial control devices, inverters, uninterruptible power supplies (UPS) and Electric Vehicle (EV) powertrains. The module can also be used in high-efficiency air conditioning systems, surges, and in higher voltage and higher current AC pulse applications.ConclusionThe IRKH26/04A thyristor module is a reliable and efficient solution for AC circuit applications and offers excellent surge protection abilities in even the most demanding environments. It provides carrier-controlled turn-on and can easily keep within the overloading capacity. The module is highly reliable, very easy to install and maintain, and provides excellent surge protection capabilities.

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