A triac (Triode for Alternating Current) is a semiconductor device used for controlling alternating current (AC). Unlike a thyristor, which can only conduct current in one direction, a triac can conduct in both directions when activated. It has three terminals: MT1 (Main Terminal 1), MT2 (Main Terminal 2), and gate.
When a sufficient control signal is applied to the gate, the triac begins to conduct current during both the positive and negative half-cycles of the AC voltage. It remains conducting until the current through the device drops below a certain threshold value, known as the holding current.
Triacs are commonly used in applications such as light dimming, motor speed control, fan speed regulation, heating control, and other areas where efficient control of AC power is required.
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2N6073AG Triac TO-126 400V 4A logic level
ACS102-6T1 Triac SO-8 600V 0.2A
STMicroelectronics
BT131-600 Triac TO-92 600V 1A logic level
WeEn - NXP
BT134W-600D Triac SOT223 600V 1A logic level
WeEn - NXP
BT134W-600E Triac SOT223 600V 1A logic level
WeEn - NXP
BT134W-800EF Triac SOT223 800V 1A logic level
WeEn - NXP
BT136-600 Triac TO-220 600V 4A
WeEn - NXP
BT136-600D TO-220 600V 4A logic level
NXP
BT136-600E Triac TO-220 600V 4A logic level
NXP
BT137-600 Triac TO-220 600V 8A
WeEn - NXP
BT137-800 Triac TO-220 800V 8A
WeEn - NXP
BT137-800E Triac TO-220 800V 8A logic level
WeEn - NXP
BT137B-800 Triac D2PAK 800V 8A
WeEn - NXP
BT138-600 Triac TO-220 600V 12A
WeEn - NXP
BT138-600D Triac TO-220 600V 12A logic level
WeEn - NXP
BT138-800 Triac TO-220 800V 12A
WeEn - NXP
BT138-800E Triac TO-220 800V 12A logic level
WeEn - NXP
BT139-600 Triac TO-220 600V 16A
NXP
BT139-600E Triac TO-220 600V 16A
WeEn - NXP
BT139-800 Triac TO-220 800V 12A
WeEn - NXP
BT139-800E Triac TO-220 800V 12A logic level
WeEn - NXP
BTA06-600BRG Triac TO-220 600V 6A
STMicroelectronics
BTA06-600BWRG Triac TO-220 600V 6A
STMicroelectronics
BTA06-600TWRG Triac TO-220 600V 6A logic level
STMicroelectronics
BTA08-600BRG Triac TO-220 8A 600V
STMicroelectronics
BTA08-600BWRG Triac TO-220 600V 8A
STMicroelectronics
BTA08-600SWRG Triac TO-220 600V 8A logic level
STMicroelectronics
BTA12-600B TO-220 TRIAC
STMicroelectronics
BTA12-600BWRG TO-220 600V 12A insulated
STMicroelectronics
BTA12-600SWRG Triac TO-220 600V 12A logic level
STMicroelectronics
BTA12-800BW TO-220 800V 12A
BTA131-800E Triac TO-92 800V 1A logic level
WeEn - NXP
BTA16-600BRG Triac TO-220 600V 16A
STMicroelectronics
BTA16-600BWRG Triac TO-220 600V 16A
STMicroelectronics
BTA16-600SWRG Triac TO-220 600V 16A logic level
STMicroelectronics
BTA216-600B Triac TO-220 600V 16A
NXP
BTA216X-800B Triac TO-220FP 800V 16A
NXP
BTA24-600BWRG Triac TO-220 600V 25A
STMicroelectronics
BTA25-600BW Triac RD91 600V 25A
STMicroelectronics
BTA25-800BW Triac RD91 600V 25A
STMicroelectronics
BTA26-600BWRG Triac TOP3 600V 26A
STMicroelectronics
BTA26A-600BRG Triac TOP3 600V 25A
STMicroelectronics
BTA40-600B Triac RD91 600V 40A
STMicroelectronics
BTA40-800B Triac RD91 800V 40A
STMicroelectronics
BTA41-600B Triac TOP3 600V 40A
STMicroelectronics
BTA41-800B Triac TOP3 800V 40A
STMicroelectronics
BTB12-600BWRG Triac TO-220 600V 12A
STMicroelectronics
BTB16-800BRG TO-220 800V 16A triac
STMicroelectronics
BTB16-800CWRG Triac TO-220 800V 16A
MAC12NGOS TO-220AB 800V 12A
Littelfuse
A triac (Triode for Alternating Current) is a semiconductor device used for controlling alternating current (AC). Unlike a thyristor, which can only conduct current in one direction, a triac can conduct in both directions when activated. It has three terminals: MT1 (Main Terminal 1), MT2 (Main Terminal 2), and gate.
When a sufficient control signal is applied to the gate, the triac begins to conduct current during both the positive and negative half-cycles of the AC voltage. It remains conducting until the current through the device drops below a certain threshold value, known as the holding current.
Triacs are commonly used in applications such as light dimming, motor speed control, fan speed regulation, heating control, and other areas where efficient control of AC power is required.