4 QUADRANT LOGIC LEVEL TRIAC Triode For Alternating Current (TRIAC) 2,400+

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Part RoHS Manufacturer Trigger Device Type Package Style (Meter) Surface Mount Terminal Position Configuration Case Connection Maximum On-state Voltage Package Body Material Maximum DC Gate Trigger Current Non Repetitive Peak On-state Current Terminal Form Package Shape Maximum On-state Current No. of Elements Maximum Leakage Current Repetitive Peak Reverse Voltage Maximum Repetitive Peak Off-state Leakage Current No. of Terminals Sub-Category Maximum Operating Temperature Minimum Operating Temperature Terminal Finish Maximum RMS On-state Current JESD-30 Code Moisture Sensitivity Level (MSL) Maximum DC Gate Trigger Voltage Qualification Repetitive Peak Off-state Voltage Minimum Critical Rate of Rise of Commutation Voltage Minimum Critical Rate of Rise of Off-state Voltage Maximum Holding Current Additional Features JEDEC-95 Code JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Reference Standard

BTA12-800SW

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.005 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

12 A

R-PSFM-T3

1.3 V

Not Qualified

800 V

40 V/us

15 mA

TO-220AB

e3

BTA41-600A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

THROUGH-HOLE

RECTANGULAR

1

4 mA

3

TRIACs

125 Cel

-40 Cel

40 A

R-PSFM-T3

2.5 V

Not Qualified

600 V

5 V/us

150 V/us

100 mA

BTA26-600A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

THROUGH-HOLE

RECTANGULAR

1

3 mA

3

TRIACs

125 Cel

-40 Cel

25 A

R-PSFM-T3

3 V

Not Qualified

600 V

5 V/us

150 V/us

100 mA

Z0107SN5AA4

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

SMALL OUTLINE

YES

DUAL

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

7 mA

GULL WING

RECTANGULAR

1

4

TRIACs

125 Cel

-40 Cel

Matte Tin (Sn) - annealed

1 A

R-PDSO-G4

1

1.3 V

Not Qualified

700 V

1 V/us

20 V/us

10 mA

SENSITIVE GATE

e3

30

260

BTA16-400B

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-45 Cel

MATTE TIN

16 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

.00001 V/us

.0001 V/us

50 mA

TO-220AB

e3

BTA06-700D

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

2.5 V

Not Qualified

700 V

15 mA

SENSITIVE GATE

TO-220AB

e3

BTA04-400D

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

4 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

15 mA

TO-220AB

e3

UL RECOGNIZED

BTB12-400SW/F2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

YES

SINGLE

SINGLE

PLASTIC/EPOXY

10 mA

GULL WING

RECTANGULAR

1

10 uA

3

110 Cel

-40 Cel

12 A

R-PSFM-G3

1.5 V

Not Qualified

400 V

50 V/us

25 mA

BTB12-600SW/F3

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

YES

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

10 mA

GULL WING

RECTANGULAR

1

10 uA

2

110 Cel

-40 Cel

Matte Tin (Sn)

12 A

R-PSFM-G2

1.5 V

Not Qualified

600 V

50 V/us

25 mA

e3

T405-800B

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

SMALL OUTLINE

YES

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

5 mA

GULL WING

RECTANGULAR

1

.005 mA

2

TRIACs

125 Cel

-40 Cel

Matte Tin (Sn) - annealed

4 A

R-PSSO-G2

1

1.3 V

Not Qualified

800 V

20 V/us

10 mA

e3

30

260

BTA12-800TWRG

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

.005 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

12 A

R-PSFM-T3

1.3 V

Not Qualified

800 V

20 V/us

10 mA

TO-220AB

e3

BTB10-400C

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

Not Qualified

400 V

5 V/us

50 V/us

50 mA

TO-220AB

e3

BTA08-700TW/F2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

YES

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

GULL WING

RECTANGULAR

1

10 uA

3

110 Cel

-40 Cel

8 A

R-PSFM-G3

1.5 V

Not Qualified

700 V

20 V/us

15 mA

BTB12-600BRG

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

50 mA

THROUGH-HOLE

RECTANGULAR

1

1 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

12 A

R-PSFM-T3

1.3 V

Not Qualified

600 V

10 V/us

400 V/us

50 mA

TO-220AB

e3

BTA41-800A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

150 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

40 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

10 V/us

250 V/us

100 mA

e3

BTB12-600SW/F2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

YES

SINGLE

SINGLE

PLASTIC/EPOXY

10 mA

GULL WING

RECTANGULAR

1

10 uA

3

110 Cel

-40 Cel

Matte Tin (Sn)

12 A

R-PSFM-G3

1.5 V

Not Qualified

600 V

50 V/us

25 mA

e3

BTA41-400A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

THROUGH-HOLE

RECTANGULAR

1

4 mA

3

TRIACs

125 Cel

-40 Cel

Tin/Lead (Sn/Pb)

40 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

5 V/us

150 V/us

100 mA

e0

T405-700D

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

TIN LEAD

4 A

R-PSFM-T3

Not Qualified

700 V

SENSITIVE GATE

e0

Z0103MA2AL2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

1 A

R-PBCY-T3

1.3 V

Not Qualified

600 V

.5 V/us

10 V/us

7 mA

SENSITIVE GATE

TO-92

e3

BTA06-800CRG

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

1 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

1.3 V

Not Qualified

800 V

5 V/us

200 V/us

25 mA

TO-220AB

e3

UL RECOGNIZED

BTA08-800SWRG

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

1 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

8 A

R-PSFM-T3

1.3 V

Not Qualified

800 V

40 V/us

15 mA

TO-220AB

e3

UL RECOGNIZED

Z0405DF

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

IN-LINE

NO

SINGLE

SINGLE

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

.2 mA

3

TRIACs

125 Cel

-45 Cel

.95 A

R-PSIP-T3

2 V

Not Qualified

400 V

30 V/us

10 mA

SENSITIVE GATE

NOT SPECIFIED

NOT SPECIFIED

Z0103SN5AA4

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

SMALL OUTLINE

YES

DUAL

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

5 mA

GULL WING

RECTANGULAR

1

4

TRIACs

125 Cel

-40 Cel

MATTE TIN

1 A

R-PDSO-G4

1

1.3 V

Not Qualified

700 V

.5 V/us

10 V/us

7 mA

SENSITIVE GATE

e3

BTA06-800C

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

5 V/us

100 V/us

25 mA

TO-220AB

e3

ACST4-7SB-TR

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

SMALL OUTLINE

YES

SINGLE

SINGLE

MAIN TERMINAL 1

PLASTIC/EPOXY

10 mA

GULL WING

RECTANGULAR

1

.5 mA

2

TRIACs

125 Cel

-30 Cel

MATTE TIN

4 A

R-PSSO-G2

1

1 V

Not Qualified

700 V

200 V/us

20 mA

e3

BTA08-600TW

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

10 uA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

8 A

R-PSFM-T3

1.5 V

Not Qualified

600 V

1.8 V/us

20 V/us

15 mA

TO-220AB

e3

Z0103DA

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

3 mA

THROUGH-HOLE

ROUND

1

.01 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

.8 A

O-PBCY-T3

1.5 V

Not Qualified

400 V

7 mA

SENSITIVE GATE

TO-92

e3

BTB12-700SW/F3

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

YES

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

10 mA

GULL WING

RECTANGULAR

1

10 uA

2

110 Cel

-40 Cel

12 A

R-PSFM-G2

1.5 V

Not Qualified

700 V

50 V/us

25 mA

Z0410SF1AA2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

IN-LINE

NO

SINGLE

SINGLE

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

4 A

R-PSIP-T3

1.3 V

Not Qualified

700 V

5 V/us

200 V/us

25 mA

e3

Z0103DA1AA2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

3 mA

THROUGH-HOLE

ROUND

1

.01 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

.8 A

O-PBCY-T3

1

1.5 V

Not Qualified

400 V

7 mA

SENSITIVE GATE

TO-92

e3

Z0410NF

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

IN-LINE

NO

SINGLE

SINGLE

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

.2 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

.95 A

R-PSIP-T3

2 V

Not Qualified

800 V

30 V/us

50 mA

SENSITIVE GATE

e3

BTB16-400B

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

PLASTIC/EPOXY

50 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

16 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

.00001 V/us

.0001 V/us

50 mA

TO-220AB

e3

T405-800W

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

4 A

R-PSFM-T3

Not Qualified

800 V

SENSITIVE GATE

TO-220AB

e3

BTA06-700S

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

2.5 V

Not Qualified

700 V

1 V/us

10 V/us

25 mA

SENSITIVE GATE

TO-220AB

e3

BTA08-400TW/F5

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

10 uA

3

110 Cel

-40 Cel

8 A

R-PSFM-T3

1.5 V

Not Qualified

400 V

20 V/us

15 mA

TO-220AB

BTA08-700A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

8 A

R-PSFM-T3

2.5 V

Not Qualified

700 V

.00001 V/us

25 mA

SENSITIVE GATE

TO-220AB

e3

BTA06-400A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

.00001 V/us

25 mA

SENSITIVE GATE

TO-220AB

e3

BTA12-600C

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

10 uA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

12 A

R-PSFM-T3

1.5 V

Not Qualified

600 V

5 V/us

100 V/us

25 mA

TO-220AB

e3

BTA10-800C

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

5 V/us

100 V/us

25 mA

TO-220AB

e3

Z0109SA5AL2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

1 A

R-PBCY-T3

1.3 V

Not Qualified

700 V

50 V/us

10 mA

SENSITIVE GATE

TO-92

e3

BTA04-700A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

4 A

R-PSFM-T3

2.5 V

Not Qualified

700 V

.00001 V/us

25 mA

TO-220AB

e3

UL RECOGNIZED

Z0405NF

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

IN-LINE

NO

SINGLE

SINGLE

PLASTIC/EPOXY

5 mA

THROUGH-HOLE

RECTANGULAR

1

.2 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

.95 A

R-PSIP-T3

2 V

Not Qualified

800 V

30 V/us

10 mA

SENSITIVE GATE

e3

BTA04-400S

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

10 mA

THROUGH-HOLE

RECTANGULAR

1

.75 mA

3

TRIACs

110 Cel

-40 Cel

MATTE TIN

4 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

1 V/us

10 V/us

25 mA

TO-220AB

e3

UL RECOGNIZED

BTA40-600A

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

UPPER

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

350 A

SOLDER LUG

ROUND

1

4 mA

3

TRIACs

125 Cel

-40 Cel

40 A

O-PUFM-D3

2.5 V

Not Qualified

600 V

100 mA

Z0402NF0AA2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

IN-LINE

NO

SINGLE

SINGLE

PLASTIC/EPOXY

3 mA

THROUGH-HOLE

RECTANGULAR

1

.5 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

4 A

R-PSIP-T3

1.3 V

Not Qualified

800 V

.5 V/us

10 V/us

3 mA

e3

Z0107NA2AL2

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

7 mA

THROUGH-HOLE

RECTANGULAR

1

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

1 A

R-PBCY-T3

1.3 V

Not Qualified

800 V

1 V/us

20 V/us

10 mA

SENSITIVE GATE

TO-92

e3

BTB16-800CRG

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

FLANGE MOUNT

NO

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

25 mA

THROUGH-HOLE

RECTANGULAR

1

2 mA

3

TRIACs

125 Cel

-40 Cel

MATTE TIN

16 A

R-PSFM-T3

1.3 V

Not Qualified

800 V

5 V/us

200 V/us

25 mA

TO-220AB

e3

T405-700B

STMicroelectronics

4 QUADRANT LOGIC LEVEL TRIAC

SMALL OUTLINE

YES

SINGLE

SINGLE

MAIN TERMINAL 2

PLASTIC/EPOXY

5 mA

GULL WING

RECTANGULAR

1

.005 mA

2

TRIACs

125 Cel

-40 Cel

Matte Tin (Sn) - annealed

4 A

R-PSSO-G2

1

1.3 V

Not Qualified

700 V

20 V/us

10 mA

e3

30

260

Triode For Alternating Current (TRIAC)

A Triode for Alternating Current (TRIAC) is a semiconductor device that is used to control the flow of electrical current in AC circuits. It is a bidirectional device that can conduct current in both directions, making it useful for AC power control applications.

TRIACs consist of a bidirectional switching element that allows for the control of AC current in both directions. They are typically used in applications where AC voltage needs to be controlled, such as in lighting control, motor speed control, and power supplies.

TRIACs work by applying a small current or voltage to the gate terminal, which allows current to flow through the device. Once the current reaches a certain level, the TRIAC turns on and conducts current in both directions until the current drops below a certain threshold, at which point the TRIAC turns off.

TRIACs are commonly used in conjunction with other components such as capacitors, inductors, and diodes to form complete electronic circuits. They are often used in power control circuits that require precise control of AC voltage or current.