L4008L6TP

Series:	--
Packaging:	Tube
Part Status:	Active
Triac Type:	Logic - Sensitive Gate
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):	65A, 85A
Current - Gate Trigger (Igt) (Max):	10mA
Current - Hold (Ih) (Max):	10mA
Configuration:	Single
Operating Temperature:	-40°C ~ 110°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-220-3 Isolated Tab
Supplier Device Package:	TO-220AB-L

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Thyristors - TRIACs

A Triac is a three-terminal semiconductor switch device used to control current across a range of power levels and frequencies. It was invented by General Electric scientists in 1951 and is still used in numerous industrial and consumer applications today. Though not as popular as other semiconductor switching devices, the Triac is a critical component used in many applications in which control of current is needed.

The L4008L6TP is a high-power TRIAC device designed to switch high currents while offering robust protection against over-voltage and over-current. This device supports up to 8 A (L4008L6TPA) and 10 A (L4008L6TPC) of continuous AC current, and is capable of handling up to 16 A (L4008L6TPA) and 20 A (L4008L6TPC) of peak current. The maximum off-state voltage that this TRIAC can support is 800V, while the maximum on-state voltage is 700V. It features a low on-state voltage drop on its positive plate and a low leakage current on its negative plate.

The main application fields for the L4008L6TP are primarily AC load switching, including domestic and commercial light dimmers, AC motor speed controllers, power window controllers and AC switches for controlling power to other devices. The TRIAC is also typically used in load control circuits, where it can regulate the current flowing through a load by fastor-slow switching its AC input. This ensures that a load is receiving the desired amount of current regardless of the source voltage or frequency.

The key principle underlying the operation of Triacs is the use of an external trigger or gate signal to control the device\'s conduction. This type of switching behavior makes the Triac an ideal choice for AC switching applications, as it is capable of turning a current on and off in a relatively short amount of time. The trigger signal is often generated by a control circuit, and is applied to the Triac\'s gate terminal. When the trigger signal is applied, it produces a reverse bias voltage on the gate-cathode junction, which causes current to flow between the gate and cathode, and in turn causes the Triac to conduct.

The voltage that is applied to the gate terminal of the Triac must be greater than its "gate-trigger voltage" in order for the device to turn on. Thus, as the input voltage applied to the gate terminal increases, the amount of current flowing into the Triac also increases. Once the gate voltage reaches its trigger voltage, the Triac will switch on, and it will remain on until the voltage applied to the gate terminal is reduced below its breakover voltage. The Triac can then be switched off by applying a reverse voltage across its gate and cathode terminals.

In summary, the L4008L6TP is a high-power TRIAC device designed to switch high currents and provide protection against over-voltage and over-current. It is primarily used in AC load switching applications, where its fast switching behavior enables precise control of the current passing through a load. It is triggered by an external trigger signal that produces a reverse bias voltage on the gate-cathode junction, and is shut off by applying a reverse voltage across the gate and cathode terminals.

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