L2008L8

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Thyristors are devices that, once triggered by an electric current, can turn on and remain in the conducting state even without any further current passing through them. The TRIAC is one type of Thyristor and is a bidirectional switching device. The acronym stands for Triode Alternating current Switch, and it describes its capability to switch both ways in an AC circuit. In particular, the L2008L8 TRIAC is an extension of that technology, with a relatively high power rating, and excellent surge current and thermal cycling capabilities.

The L2008L8 is designed primarily for motor control, overload protection and light dimming applications in the industry. It is available in a five pin TO-220 package and can handle up to 100V and 4A. It is noted for its high load voltage capability and its relatively low sensitivities to junction temperature and gate current.

The L2008L8 is a four quadrant gate-controlled switch. It is electrically equivalent to two SCRs connected in inverse parallel. The switch is primarily triggered by applying an appropriate gate signal with respect to its main terminals. It can tolerate high levels of non-repetitive surge currents and can withstand high junction temperature and low power dissipation.

The working principle of a TRIAC is why it can handle both AC and DC current well. It is a three terminal device which includes the main terminals or MT1 and MT2 and the gate terminal. When the voltage between MT1 and MT2 is positive, it allows the current to flow from MT2 to MT1 and when it is negative, the current is allowed to flow from MT1 to MT2. When a gate current is applied, the TRIAC stays in a conducting state and current can flow in both directions. This is why is it considered a bidirectional switch.

One unique feature of the L2008L8 is its ability to be operated in four quadrants. For a traditional TRIAC circuit, the gate signal is trigged to turn the device on and back off. With the L2008L8, the gate signal voltage can be below the MT2 voltage and still turn the device on. This additional control makes the L2008L8 useful in more applications where precise control of the current is needed. When initiated in the reverse direction, the TRIAC can become more sensitive to gate signal input, allowing more precise control of current.

The application fields of the L2008L8 are wide and varied. It is well suited for use in lighting control, motor control, and industrial instrumentation. The capabilities of the L2008L8 make it a great choice for those fields. The low sensitivities to signal and temperature, the Triac\'s bidirectional capability, and the four-quadrant operation make it a great choice for any application.

In conclusion, the L2008L8 is a versatile and reliable device for controlling current in a variety of applications. Its comprehensive gate control capabilities and low sensitivities make it a great choice for lighting control, motor control, and industrial instrumentation. The L2008L8 is a reliable, powerful and cost-effective solution for all of these areas, and its many capabilities make it one of the most sought-after TRIACs on the market.

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