IRKL136/12

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The IRKL136/12 thyristor module is one of the most widely used components in power switching applications, due to its high switching speed, high current handling capacity, low on-state voltage drop, and excellent surge ratings.

Thyristors are three-terminal semiconductor devices, capable of controlling high power electronic circuits. However, unlike transistors and other single-device components, thyristors are usually manufactured in a module form, with several thyristor devices packed into one unit. The IRKL136/12 is one such device – it is a modular thyristor composed of two controlled rectifier stacks and two antiparallel thyristors.

This module is mainly used in low-voltage applications such as DC drives, static relays, power supplies, and rectifier circuits. It operates by taking a gate signal and allowing a high-current DC flow through the gate. This DC current then triggers the thyristor, establishing a low-voltage, high-current path between the supply voltage and the load.

The IRKL136/12 is based on a long-established ‘triple’ commutation scheme, where each thyristor module contains two sets of controlled rectifier stacks. In the first set, the thyristor conducts energy from one side of the circuit to the other; it then releases energy from the other side back to the first side. The second set of controlled rectifier stacks reverses the flow of energy, thereby rectifying the current, so that only DC current can flow in the circuit. This double rectification function provides superior energy conversion efficiency and superior surge protection.

This module is highly suitable for controlling medium to high-voltage applications, and is known for its rapid switching action (0.2 µs on-state triggering) and fast load regulation. Additionally, it provides superior levels of surge protection against fast-changing loads, and its self-clearing design eliminates the need for any external snubber networks.

The IRKL136/12 module offers users several advantages over conventional thyristors. First, due to its high current handling capacity, it is suitable for heavy-duty industrial applications. Second, it requires relatively low operating voltages, allowing it to be used in circuits with a wide range of operating voltages. Finally, its decreased thermal losses reduce energy consumption, bringing cost savings to users.

In order to ensure optimal performance, careful attention must be paid to the module’s operating parameters, such as its maximum operating temperature, turn-off time, and gate triggering voltage. These parameters should be considered in order to avoid any potential damage to the module or other components in the circuit.

In conclusion, the IRKL136/12 thyristor module is one of the most versatile and reliable power switching components available. It provides users with a high current handling capacity, low on-state voltage drop, and excellent surge protection. Additionally, its compact design and relatively low operating voltages make it an ideal choice for medium to high-voltage applications.

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