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 |
|---|---|---|---|---|
| FOD4218S | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 10 | |
| FOD4218 | onsemi | Triac & SCR Output Optocouplers 800V low triggr curr RANDOM PHASE TRIAC | 160,000 | |
| FOD4216V | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216TV | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216SV | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216SDV | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216SD | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216S | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 | |
| FOD4216 | onsemi | Triac & SCR Output Optocouplers 600V low triggr curr RANDOM PHASE TRIAC | 80,000 | |
| FOD420V | onsemi | Triac & SCR Output Optocouplers Random Phase Triac Snubberless | 80,000 |
How to Choose TRIACs
A practical selection framework for TRIACs covering specifications, packaging, lifecycle, and sourcing on Octatronics.
Define electrical and environmental requirements
Start with the required function and operating conditions for TRIACs, then lock in critical parameters such as breakover voltage, on-state current, gate trigger current, holding current, and dv/dt capability. Match these against datasheet limits, not catalog summaries alone.
Validate package and land pattern compatibility
Confirm the TRIACs package matches your PCB footprint, pick-and-place constraints, and moisture sensitivity handling. Verify reel/tape or tube packaging for production.
Check lifecycle, compliance, and alternates
Review lifecycle status (Active, NRND, EOL), RoHS, and approved alternate sources for TRIACs before committing to high-volume builds. Use Octatronics cross-reference data when a drop-in replacement is needed.
Compare manufacturers and request pricing
Filter TRIACs by manufacturers such as onsemi and Vishay, compare key specs side by side, then submit an RFQ with quantity, target delivery, and traceability requirements.
Related Selection Resources
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
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.