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Thyristors - TRIACs

Z0109NA 2AL2 application field and working principle

Thyristors are a type of solid-state semiconductor controlled devices related to transistors, which are used as switching devices in various applications. Thyristors can be categorized into two main categories depending on their function – two-terminal or multi-terminal. Examples of two-terminal thyristors include silicon-controlled rectifiers (SCRs) and TRIACs (triode for alternating current).

A TRIAC is an acronym for Triode for Alternating Current and is a three-terminal thyristor device that is designed specifically to control current in both directions. They are widely used to control power in AC circuits and have the capability to switch and control power through both directions in a single device. The device is most commonly used in controlling ACS and phase control applications.

The Z0109NA 2AL2 is one type of TRIAC. It is designed and manufactured by IXYS Corporation, one of the top suppliers of power semiconductors and integrated circuits. This triac is a Si-Based dual common cathode device with a gate trigger current of only 100mA. It has a blocking voltage of 800V and can handle a current of up to 10A. This TRIAC is cast in DIP-4 packages that are easy to use and to mount in small or narrow spaces.

The Z0109NA 2AL2 has a wide range of applications in power electronics and control. It can be used for switching and controlling general AC power supplies, motor speed controls, soft starts and stops, light dimmers, power switching circuits and high voltage distribution circuits.

In addition, this device has wide surge current capability, optimal turn-on characteristics, a low on-state voltage drop and controlled gate triggering to ensure reliable and safe operation.

The working principle of a TRIAC is essentially the same as that of its predecessor, the Silicon Controlled Rectifier (SCR). It consists of three terminals – gate, main (MT) and auxiliary (AT). When the gate terminal is given a signal, it turns the TRIAC on and a current is able to flow through both the main and auxiliary terminals. In order to turn the TRIAC off, the signal at the gate needs to be removed. To reduce the current flow, the signal at the gate needs to be decreased.

The Z0109NA 2AL2 is a versatile and reliable device used to provide control and power switching capabilities in AC circuits. With its features and its wide range of applications, it is an ideal choice for many power control applications.

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