MAC997B6

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Triac Type:	Logic - Sensitive Gate
Voltage - Off State:	400V
Current - On State (It (RMS)) (Max):	800mA
Voltage - Gate Trigger (Vgt) (Max):	2V
Current - Non Rep. Surge 50, 60Hz (Itsm):	8A @ 60Hz
Current - Gate Trigger (Igt) (Max):	3mA
Current - Hold (Ih) (Max):	10mA
Configuration:	Single
Operating Temperature:	-40°C ~ 110°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA)
Supplier Device Package:	TO-92-3
Base Part Number:	MAC997

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Thyristors - TRIACs

The Mac997B6 is a type of TRIAC that is commonly used in many industrial and home applications. A TRIAC (or Triode for Alternate Current) is a three-terminal component that allows current to be controlled by means of an applied voltage. It acts like an on-off switch, and is very flexible and efficient in controlling the amount of power being used. In this article, we will examine the applications and working principle of the Mac997B6.The Mac997B6 is a micropower gate-controlled TRIAC and is usually used in industrial applications such as motor speed, light dimming systems, heater and fan speed controllers, temperature control systems, and computer peripherals such as printers. Its design allows high performance with low power consumption. It has a rated breakover current of 50A and a load current rating of 32A.The Mac997B6 is an optically isolated TRIAC, which means it has an optically controlled gate between its main terminals. This optically controlled gate allows for quick switching, good immunity to electrical noise, and the ability to control the flow of electricity with a relatively low input current. When an optically isolated TRIAC is switched on, the photo-transistor in the optically isolated TRIAC circuit creates a voltage across the optically isolated gate that is greater than the main terminal voltage, allowing a large current flow. When switched off, the switch is cut off, and current stops flowing.The Mac997B6 has four main parts: the two main terminals, the optically isolated gate and the switch or thyristor, which is the most important part. The thyristor is made up of two PNPN diodes connected in series, formed in a series of sandwich layers. The two PNPN diodes are switched on or off depending on the voltage present at the gate. When the voltage is high enough to create a sufficient current through the two diodes, the thyristor is “on” and current flows, but when the voltage drops the thyristor is “off” and the current stops.The working principle of the Mac997B6 is simple. It allows current to flow from the main terminals when a small voltage applied to the optically isolated gate terminal is greater than the main terminal voltage. This voltage can be as low as 5V and as high as 250V. Once turned on, most Mac997B6 application fields will require a constant current to continue being controlled. The device also has a relatively fast turn-on and turn-off speed, which makes it useful for applications requiring accurate control of current in short periods of time.In summary, the Mac997B6 is a MICROPOWER Gate-Controlled TRIAC that is commonly used in industrial and home applications. It has a rated breakover current of 50A and a load current rating of 32A. It allows current to flow when a small voltage applied to the optically isolated gate terminal is greater than the main terminal voltage. It is useful for applications requiring inaccurate control of current in short periods of time because of its relatively fast turn-on and turn-off speeds.

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