2N6508G

Current - Hold (Ih) (Max):	40mA
Base Part Number:	2N6508
Supplier Device Package:	TO-220AB
Package / Case:	TO-220-3
Mounting Type:	Through Hole
Operating Temperature:	-40°C ~ 125°C
SCR Type:	Standard Recovery
Current - Non Rep. Surge 50, 60Hz (Itsm):	250A @ 60Hz
Current - Off State (Max):	10µA
Series:	--
Current - On State (It (RMS)) (Max):	25A
Current - On State (It (AV)) (Max):	16A
Voltage - On State (Vtm) (Max):	1.8V
Current - Gate Trigger (Igt) (Max):	30mA
Voltage - Gate Trigger (Vgt) (Max):	1.5V
Voltage - Off State:	600V
Part Status:	Active
Packaging:	Bulk

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Thyristors - SCRs

A thyristor is an electronic device, also known as a silicon-controlled rectifier (SCR), that reacts to a given input voltage in a predictable fashion. This article will discuss the 2N6508G thyristor, its application and working principle.The 2N6508G is a popular SCR used by many in industrial and electrical control applications. It is rated for blocking in excess of 200V with a gate trigger current of 5mA, and can handle up to 50 amps of continuously regrading current. It is also available in both unipak and dual-pak packages. This makes it a great choice for a variety of applications.Since the invention of the SCR, thyristors have seen use in the electrical control community due to their ability to reliably block a voltage and react to a low gate voltage. Automation systems, power supplies and motor controllers all commonly use thyristors.To explain the working principle of the 2N6508G, it is important to understand the differences in operation between PN junction diodes and thyristors. A diode is simply a one-way conductor, allowing current to pass in one direction and blocking it in the other. A thyristor, on the other hand, is a multiple-way conductor, allowing current to pass in two directions, but only when a specific voltage, known as the "gate voltage", is applied. This allows the thyristor to be used to control current flow in both directions.The 2N6508G will remain in the blocking, or "off", state until a gate voltage of 5mA is applied. This gate voltage, also known as the trigger voltage, will cause the SCR to switch to its conducting, or "on", state and remain in this state until the current flow is interrupted or the forward blocking voltage is exceeded.An example of this can be seen in the operation of a light dimmer switch. When the switch is in the "off" position, the thyristor will be blocking the current flow through a series of light bulbs. When the switch is moved to the "on" position, the thyristor will switch to its conducting state and current will begin to flow via its greater conduction path. This will cause the lights to dim as the dimmer switch is adjusted to suit the desired intensity.In conclusion, the 2N6508G thyristor is a widely used and versatile SCR, used in many different applications. Its ability to block current until it is triggered by a gate voltage, and its robust conduction properties make it an ideal choice for controlling current flow. As more and more electronics are automated, thyristors will certainly become even more popular in both hobby and industrial projects.

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