Q6015L552

Series:	--
Packaging:	Bulk
Part Status:	Discontinued at Digi-Key
Triac Type:	Standard
Voltage - Off State:	600V
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:Q6015L552 application field and working principle

Thyristors are a family of semiconductor devices which are formed by three layers of alternating N & P type materials. It controls the non-, semi- and fully-conducting states, which is based on the principles of unidirectional current flow control. TRIACs are a type of Thyristor, which is generally used for AC switching applications. Q6015L552 is one of the most popular TRIACs, which is extensively used in the industrial and commercial applications.

Application Field of Q6015L552

Q6015L552 is a bidirectional TRIAC switch, which is usually employed in AC switching or motor speed control applications. It is composed of a PIN5 gate, which can switch between conducting or non-conducting states in both directions. This TRIAC is designed to have a maximum voltage at 600VAC, a current of 15A with a peak forward surge current of approximately 142A. With its robust construction and reliable in-circuit behavior, this TRIAC is adopted in a wide range of applications such as variable speed controllers, HVAC, LED lighting, ballast controls, etc.

Working Principle of Q6015L552

Like all other TRIACs, Q6015L552 also works on the same principle. Fig 1 shows a conventional circuit of a TRIAC. In this circuit there is an SCR, which is connected in series with the load. The Gate, which is connected to the Gate of the SCR, can control the conduction state of the SCR. When a proper voltage is applied to the Gate, the conducting state of the SCR is established, and then a current will flow through the load. Similarly, Q6015L552 also uses the same principle, but it has an additional advantage. In this type of TRIAC, both current directions can be controlled by a single Gate, which means that it can be used in both AC and DC applications.

Conclusion

Q6015L552 is a very popular and reliable TRIAC switch, which makes it suitable for AC switching applications. It is designed to have a maximum voltage resistance at 600VAC, and a current of 15A with a peak forward surge current of approximately 142A. Due to its robust construction and in-circuit performance, it is employed in various commercial and industrial applications such as motor speed control, HVAC, LED lighting, etc. Its working principle is quite similar to that of a conventional Thyristor, which is based on applying a controlling voltage to a Gate. This type of TRIAC switch also has the advantage that it can be utilized for both AC and DC applications.

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