TRIACs
TRIACs (Triode for Alternating Current) are bidirectional thyristors that switch AC current in both directions, widely used in light dimmers, fan speed controllers, AC motor soft starters, and heating element controllers. Key selection parameters include breakover voltage, on-state RMS current, gate trigger current, dI/dt, and dV/dt ratings.
Product Series & Base Models
Navigate by model series to compare ordering variants and technical specifications within the TRIACs family.
VO3063
VO3063 variants from Vishay
VO2223A
VO2223A variants from Vishay
T835T
T835T variants from STMicroelectronics
T835H
T835H variants from STMicroelectronics
T835
T835 variants from STMicroelectronics
T810T
T810T variants from STMicroelectronics
T810H
T810H variants from STMicroelectronics
T810
T810 variants from STMicroelectronics
T435
T435 variants from STMicroelectronics
T410
T410 variants from STMicroelectronics
T405Q
T405Q variants from STMicroelectronics
T405
T405 variants from STMicroelectronics
Browse TRIACs Products
| PART NUMBER | MANUFACTURER | DESCRIPTION | STOCK | QTY / ACTION |
|---|---|---|---|---|
| FODM3022R2V-NF098 | onsemi | OPTOISOLATOR 3.75KV TRIAC 4MFP | 375,000 | |
| FODM3022R2-NF098 | onsemi | Triac Output Optocoupler | 375,000 | |
| FODM3012R2V-NF098 | onsemi | Triac & SCR Output Optocouplers MFP, 250V Random Phase Triac Output | 80 | |
| FODM3012R2-NF098 | onsemi | Triac & SCR Output Optocouplers 250V Random Phase Triac Driver 5mA | 375,000 | |
| FODM3012-NF098 | onsemi | Triac Output Optocoupler | 450,000 | |
| FOD4218V | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 160,000 | |
| FOD4218TV | onsemi | Triac & SCR Output Optocouplers Zero-Cross Triac Snubberless | 80,000 | |
| FOD4218SV | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 160,000 | |
| FOD4218SDV | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 160,000 | |
| FOD4218SD | onsemi | Triac & SCR Output Optocouplers 6-PIN DIP TRIAC DRIVER | 160,000 |
Top TRIACs Manufacturers
onsemi
onsemi TRIACs products are available for part-number review, stock checks, and RFQ support.
28,226 productsVishay
Vishay TRIACs products are available for part-number review, stock checks, and RFQ support.
9,347 products
NXP Semiconductors
NXP Semiconductors TRIACs products are available for part-number review, stock checks, and RFQ support.
20,288 products
Texas Instruments
Texas Instruments TRIACs products are available for part-number review, stock checks, and RFQ support.
84,045 products
Littelfuse
Littelfuse TRIACs products are available for part-number review, stock checks, and RFQ support.
1,933 products
STMicroelectronics
STMicroelectronics TRIACs products are available for part-number review, stock checks, and RFQ support.
19,050 productsAbout TRIACs
TRIACs (Triode for Alternating Current) are bidirectional thyristors designed to switch and regulate alternating current (AC) power in both halves of the AC waveform. Operating as a solid-state AC switch controlled via a single gate terminal, TRIACs are the industry-standard component for light dimmers, fan speed controllers, AC motor soft starters, and heating element controls in household appliances and industrial systems.
Unlike standard SCRs which conduct in only one direction, TRIACs conduct bidirectionally, eliminating the need for parallel diode bridges in AC circuits. Selection parameters include peak off-state voltage (VDRM, typically 600V or 800V for offline grids), RMS on-state current (IT(RMS)), gate trigger current (IGT) across different operating quadrants, dV/dt commutating capability (which prevents false triggering under inductive loads), and package thermal ratings.
On Octatronics, source high-quality TRIACs from premier suppliers including STMicroelectronics, Littelfuse, and onsemi. Filter by current, voltage, gate trigger class, and submit bulk RFQs online for competitive pricing.
Frequently Asked Questions
Octatronics can help source a wide range of TRIACs from major manufacturers worldwide, including active production parts, long-lead-time items, and hard-to-find components.
Yes. You can submit a single part number or upload a BOM with multiple parts. Our team will check stock, date code, lead time, and pricing for each item.
Availability depends on the specific part number and supplier source. For important orders, buyers can request packaging photos, labels, date code information, and traceability documents.
Yes. Octatronics supports sourcing for active, end-of-life, obsolete, and hard-to-find components through our global supplier network.
Please provide the part number, manufacturer, quantity, required date code, target price, delivery country, and whether original packaging or COC is required.
Articles & Technology
View All →
PNP vs NPN vs P-Channel MOSFET: How to Choose the Right Transistor for Switching Circuits
PNP, NPN, and MOSFET transistors are widely used for electronic switching and control applications, but each device has different operating principles and performance characteristics. This guide explains the key differences between PNP vs NPN vs MOSFET, including switching behavior, efficiency, applications, and how engineers select the right transistor for different circuit designs.
MOSFET vs BJT: Key Differences, Working Principles, and Engineering Selection Guide
MOSFET and BJT are two fundamental transistor technologies used in electronic circuits. This guide explains the key differences between MOSFET vs BJT, including control methods, switching speed, efficiency, thermal behavior, and real-world applications. Learn how engineers select the right transistor for different circuit designs.