Q4008DH4RP

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Triac Type:	Alternistor - Snubberless
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	8A
Voltage - Gate Trigger (Vgt) (Max):	1.3V
Current - Non Rep. Surge 50, 60Hz (Itsm):	80A, 85A
Current - Gate Trigger (Igt) (Max):	35mA
Current - Hold (Ih) (Max):	35mA
Configuration:	Single
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-252-3, DPak (2 Leads + Tab), SC-63
Supplier Device Package:	TO-252, (D-Pak)

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Thyristors - TRIACs

Thyristors and TRIACs (Triode for Alternating Current) are special kinds of semiconductor devices that are designed to control current flowing through circuits. They are particularly useful for controlling alternating current, since they are capable of switching current both on and off quickly in response to an electrical signal. The Q4008DH4RP application field and working principle provides a look at how these devices work as well as what they are commonly used for.Thyristors are three-layer semiconductor devices that are able to regulate current based on the gate voltage level. At the most basic level, they allow current to pass when the gate voltage exceeds a certain threshold, and then switch off when the voltage becomes too low. This is useful because it can be used to effectively regulate and control current in a circuit. One of the most common applications of thyristors is in motor control. When connected in series with a motor, they can be used to regulate the speed of the motor, by switching the motor on and off rapidly in response to changing gate voltages. This same principle can also be used for controlling the intensity of lightbulbs, since the switching of current on and off can be used to quickly adjust the amount of current going through the circuit. TRIACs are a special type of thyristor that works even better for controlling alternating current, since they can switch current both positively and negatively on either side of the zero cross over point. This makes them much better suited for use with alternating current, since the current can be switched on and off on both the positive and negative cycles. TRIACs are used in a wide variety of applications such as home automation, lighting systems, electric heaters, and more. In particular, they are often used in dimmers, which are used to control the intensity of lightbulbs. By rapidly switching the current on and off, the dimmer is able to control the intensity of the lightbulbs and make them brighter or dimmer, as necessary. The Q4008DH4RP is a type of TRIAC designed for use in motor control and home automation systems. It has a special silicon-controlled rectifier, or SCR, that is used to quickly switch the current passing through the circuit, allowing the motor to be controlled quickly and efficiently. It also has an integrated zero-crossing detector, which is used to detect when the alternating current is passing through the zero point and switch the current off appropriately. In summary, the Q4008DH4RP is a useful device for controlling both alternating and direct current. It is particularly suited for use with motors, home automation systems, and dimmers, as it is able to quickly and efficiently switch current both positively and negatively in response to changing gate voltages.

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