MMO75-16IO1 Discrete Semiconductor Products

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The MMO75-16IO1 is a solid state switching device which is part of a large category of electrical components known as Thyristors, SCRs and Modules. A thyristor is a four-layer semiconductor device that, when triggered, can conduct a current from one electrode to another and from that point can remain in a “on” switch state until the current drops below a set threshold. A SCR (silicon controlled rectifier) is a special type of thyristor that can be switched off by applying a negative pulse of current to its gate terminal. Finally, Thyristor Modules are a set of SCRs wired together to form a single packaged unit, capable of handling more demanding applications and voltage levels.

The MMO75-16IO1 is a Thyristor Module which fits sixteen SCRs within one package, providing an economical and easy to handle alternative to wiring multiple SCRs or other single thyristors together. Each SCR has an independent gate and so can be independently triggered as needed. This means that the user can keep triggers for a range of switch operations within the same package.

The MMO75-16IO1 is suitable for applications where it is important to control current in either direction and where the switching must be highly reliable. These applications include motor control (both AC and DC motors), relay control, light dimming, voltage regulation, UPS systems and power grids. The module can also be used to switch circuits with high DC currents (up to 20 A) and high voltage (up to 800 V).

The module’s working principle is based on allowing current to flow between its electrodes when the gate terminal receives a positive trigger. This positive trigger switches on the SCR and a steady current then flows between the electrodes. When the input current reaches below the set threshold, the gate terminal receives a negative pulse and the SCR is switched off.

The MMO75-16IO1 module is a high-reliability, high-voltage and high-current device making it suitable for a variety of industrial, commercial and residential applications. As its current and voltage needs can be modified and controlled, it can be used in a variety of systems from simple lighting controls to complex DC motor switches.

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