Q4015L559

Series:	--
Packaging:	Bulk
Part Status:	Discontinued at Digi-Key
Triac Type:	Standard
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	15A
Voltage - Gate Trigger (Vgt) (Max):	2V
Current - Non Rep. Surge 50, 60Hz (Itsm):	167A, 200A
Current - Gate Trigger (Igt) (Max):	50mA
Current - Hold (Ih) (Max):	70mA
Configuration:	Single
Operating Temperature:	-40°C ~ 125°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-220-3 Isolated Tab, Formed Leads
Supplier Device Package:	TO-220 Isolated Tab

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Thyristors – TRIACs: Q4015L559 Application Field and Working Principle

Thyristors or TRIACs are three terminal ac switches with voltage controlled gating. The thyristor family is well developed with a wide range of current, voltage, power and gate characteristics available from a variety of manufacturers. The Q4015L559 is an example of a relatively simple 2-quadrant TRIAC, which is typically used for bulk AC switching.

Application Field

Q4015L559 is suitable for applications with very high peak currents, such as AC motor speed controls, solid state AC switching, AC dimmers and AC power control. It is also used in lighting ballast, load switch, temperature controller and heating devices. Since it has a low gate current, it is often used in devices with efficient gate drive circuits, such as those found in computers and other digital equipment.

Working Principle

The working principle of Q4015L559 is based on the reverse blocking voltage of a standard TRIAC cell. When the gate voltage of the TRIAC exceeds the threshold, the device is turned on and current can flow from the main leg to the gate leg. Once the gate current is greater than the hold current value, the device remains in the ON state until the main current is near zero and the gate voltage is near zero. When the main current is lowered and the gate voltage is decreased, the device will turn off.The TRIAC cell can operate in both directions since the reverse blocking voltage is negative and the forward blocking voltage is positive. The Q4015L559 is designed to offer superior current throughput and a lower operating temperature than other TRIACs, making it an ideal choice for high current applications.

Features and Benefits

The main features and benefits of the Q4015L559 include high reverse blocking voltage, low switching losses, high peak current flow, low gate current, and low operating temperature. The device is also designed to have a long lifetime and is suitable for high temperature environments, providing reliable long term operation.The high peak currents, low gate current and low operating temperature of the Q4015L559 make it an ideal choice for applications such as motor speed controls, solid state AC switching, AC dimmers, AC power control and lighting controls. The low switching losses will help to reduce energy costs, while the long lifetime and reliable operation makes the device a great choice for installations that require low maintenance.

Conclusion

The Q4015L559 is a reliable and energy efficient TRIAC that can be used in a wide range of AC switch control applications. Its features, such as high peak current, low gate current and low operating temperature, make it an ideal choice for efficient power control and AC dimmer applications. The device is also designed to have a long lifetime, making it a great choice for installations that require low maintenance.

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