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TRIACs

A TRIAC (triode for alternating current) is a silicone semiconductor component with three terminals or legs that allow current to flow in either direction when triggered. TRIACs are a development of a similar family member the thyristor. However, unlike the thyristor which is unidirectional the TRIAC is able to control current over both halves of the sine wave making TRIACs bidirectional.
How does it work?
In basic terms a TRIAC is a low power to medium power semi-latching solid state switch. The device acts like two standard thyristors inversely connected in parallel or back to back. To activate the component a voltage needs to be applied to the gate terminal. Once the gate current is triggered a TRIAC will continue to conduct even if the supply to the gate is removed.
A TRIAC is a 4 layer silicone component that is PNPN in the positive direction and NPNP in the negative direction. The devices come in panel mount, surface mount and through hole mounting options in various package types to suit a wide variety electronics applications and circuits.
Terminals
On the TRIAC symbol there are three terminals. These terminals are,
MT1 Anode 1 (Main Terminal 1)
MT2 Anode 2 (Main Terminal 2)
Gate Terminal
Applications
TRIACs are widely used for switching and power control of AC systems. TRIACS are particularly useful in applications such as lighting dimmers as they enable the utilisation of each half-cycle of the AC wave. The solid state device can be used in a circuit as a simple on off device in a wide range of electronic applications. Some of the more common areas are,
• Temperature control
• Liquid level control
• Dimmers for domestic lighting
• Small motor control
• Speed control for electric fans
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Part Details Brand Stock Rated Average On-State Current Mounting Type Package Type Maximum Gate Trigger Current Repetitive Peak Reverse Voltage Surge Current Rating Pin Count Maximum Gate Trigger Voltage Repetitive Peak Forward Blocking Voltage Maximum Holding Current Dimensions Length Width Height Repetitive Peak Off-State Current Peak On-State Voltage Minimum Operating Temperature Maximum Operating Temperature
VOM3052T, 6V, TRIAC 10mA, 4-pin, Surface Mount, SOP Vishay
  • € 0.59
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Vishay 3590 - Surface Mount SOP 10mA 6V 0.5A 4 - 600V 0.3mA 4.57 x 4.42 x 1.97mm 4.57mm 4.42mm 1.97mm 100nA 3V -40 °C +100 °C
VO3062, 6V, TRIAC, Gate Trigger 22V 10mA, 6-pin, Through Hole, DIP Vishay Vishay 1990 - Through Hole DIP 10mA 6V 1 (Non-Reptitive)A 6 22V 600V - 9 x 6.4 x 3.5mm 9mm 6.4mm 3.5mm 500nA 3V -55 °C +100 °C
VO3063, 6V, TRIAC, Gate Trigger 22V 5mA, 6-pin, Through Hole, DIP Vishay Vishay 1960 - Through Hole DIP 5mA 6V 1 (Non-Reptitive)A 6 22V 600V - 9 x 6.4 x 3.5mm 9mm 6.4mm 3.5mm 500nA 3V -55 °C +100 °C
2N6071ATG 4A, 200V, TRIAC, Gate Trigger 2.5V 10mA, 3-pin, Through Hole, TO-225 Littelfuse Littelfuse 0 4A Through Hole TO-225 10mA 200V 30A 3 2.5V 600V 30mA 7.74 x 2.66 x 11.04mm 7.74mm 2.66mm 11.04mm 2mA 2V -40 °C +110 °C
2N6073BG 4A, 400V, TRIAC, Gate Trigger 2.5V 20mA, 3-pin, Through Hole, TO-225 Littelfuse Littelfuse 0 4A Through Hole TO-225 20mA 400V 30A 3 2.5V 400V 30mA 7.74 x 2.66 x 11.04mm 7.74mm 2.66mm 11.04mm 2mA 2V -40 °C +110 °C
2N6075AG 4A, 600V, TRIAC, Gate Trigger 2.5V 10mA, 3-pin, Through Hole, TO-225 Littelfuse Littelfuse 0 4A Through Hole TO-225 10mA 600V 30A 3 2.5V 600V 15mA 7.74 x 2.66 x 11.04mm 7.74mm 2.66mm 11.04mm 0.01mA 2V -40 °C +110 °C
2N6075BG 4A, 600V, TRIAC, Gate Trigger 2.5V 5mA, 3-pin, Through Hole, TO-225 Littelfuse Littelfuse 0 4A Through Hole TO-225 5mA 600V 30A 3 2.5V 600V 15mA 7.74 x 2.66 x 11.04mm 7.74mm 2.66mm 11.04mm 0.01mA 2V -40 °C +110 °C
2N6344G 8A, 600V, TRIAC, Gate Trigger 3V 125mA, 3-pin, Through Hole, TO-220AB Littelfuse Littelfuse 0 8A Through Hole TO-220AB 125mA 600V 100A 3 3V 600V 75mA 10.28 x 4.82 x 15.75mm 10.28mm 4.82mm 15.75mm 2mA 1.55V -40 °C +125 °C
ACS108-6SN-TR, TRIAC, 3+Tab-pin, Surface Mount, SOT-223 STMicroelectronics
  • € 0.71
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STMicroelectronics 0 - Surface Mount SOT-223 - - - 3+Tab - - - 6.7 x 3.7 x 1.7mm 6.7mm 3.7mm 1.7mm - - -30 °C +125 °C
BTA06-600TWRG 6A, 800V, TRIAC, Gate Trigger 1.3V 5mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 6A Through Hole TO-220AB 5mA 800V 63A 3 1.3V 600V 10mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm 1mA 1.55V -40 °C +125 °C
BTA06-800BWRG 6A, 800V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 6A Through Hole TO-220AB 50mA 800V 63A 3 1.3V 800V 50mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm 1mA 1.55V -40 °C +125 °C
BTA08-800BWRG 8A, 800V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 8A Through Hole TO-220AB 50mA 800V 84A 3 1.3V 800V 50mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm 1mA 1.55V -40 °C +150 °C
BTA08-800CRG 8A, 800V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 8A Through Hole TO-220AB 50mA 800V 84A 3 1.3V 800V 25mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm 1mA 1.55V -40 °C +150 °C
BTA16-600CRG 16A, 600V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 16A Through Hole TO-220AB 50mA 600V 168A 3 1.3V 600V 25mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm 2mA 1.55V -40 °C +125 °C
BTA16-600CWRG 16A, 600V, TRIAC, Gate Trigger 1.3V 35mA, 3-pin, Through Hole, TO-220AB STMicroelectronics STMicroelectronics 0 16A Through Hole TO-220AB 35mA 600V 168A 3 1.3V 600V 35mA 10.4 x 4.6 x 9.3mm 10.4mm 4.6mm 9.3mm 0.005mA 1.55V -40 °C +125 °C
BTA25-600B 25A, 800V, TRIAC, Gate Trigger 1.3V 100mA, 3-pin, Panel Mount, RD-91 STMicroelectronics STMicroelectronics 0 25A Panel Mount RD-91 100mA 800V 260A 3 1.3V 600V 80mA 40 x 27 x 14mm 40mm 27mm 14mm 3mA 1.55V -40 °C +125 °C
BTA25-600BW 25A, 800V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Panel Mount, RD-91 STMicroelectronics STMicroelectronics 0 25A Panel Mount RD-91 50mA 800V 260A 3 1.3V 600V 75mA 40 x 27 x 14mm 40mm 27mm 14mm 3mA 1.55V -40 °C +125 °C
BTA25-800BW 25A, 800V, TRIAC, Gate Trigger 1.3V 50mA, 3-pin, Through Hole, RD-91 STMicroelectronics STMicroelectronics 0 25A Through Hole RD-91 50mA 800V 260A 3 1.3V 600V 75mA 10.4 x 4.6 x 15.9mm 10.4mm 4.6mm 15.9mm - - -40 °C +125 °C
BTA26-800BRG 25A, 800V, TRIAC, Gate Trigger 1.3V 100mA, 3-pin, Through Hole, TOP3 STMicroelectronics STMicroelectronics 0 25A Through Hole TOP3 100mA 800V 260A 3 1.3V 800V 80mA 15.5 x 4.6 x 21.1mm 15.5mm 4.6mm 21.1mm 3mA 1.55V -40 °C +125 °C
BTB12-600BW3G 12A, 600V, TRIAC, Gate Trigger 1.7V 50mA, 3-pin, Through Hole, TO-220 Littelfuse Littelfuse 0 12A Through Hole TO-220 50mA 600V 120A 3 1.7V 800V 50mA 10.28 x 4.82 x 15.75mm 10.28mm 4.82mm 15.75mm - - -40 °C +125 °C
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