Thyristors
Thyristors are four-layer semiconductor devices (SCRs, TRIACs, DIACs) used for controlled AC power switching in motor speed controls, dimmers, soft starters, and industrial heaters. Once triggered, thyristors remain latched in the conducting state until current drops below the holding threshold, making them ideal for phase-controlled AC power regulation.
Explore Thyristors Subcategories
Browse Thyristors 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 |
Top Thyristors Manufacturers
onsemi
onsemi Thyristors products are available for part-number review, stock checks, and RFQ support.
28,226 productsVishay
Vishay Thyristors products are available for part-number review, stock checks, and RFQ support.
9,347 products
NXP Semiconductors
NXP Semiconductors Thyristors products are available for part-number review, stock checks, and RFQ support.
20,288 products
Texas Instruments
Texas Instruments Thyristors products are available for part-number review, stock checks, and RFQ support.
84,045 products
Littelfuse
Littelfuse Thyristors products are available for part-number review, stock checks, and RFQ support.
1,933 products
STMicroelectronics
STMicroelectronics Thyristors products are available for part-number review, stock checks, and RFQ support.
19,050 productsAbout Thyristors
Thyristors (including Silicon Controlled Rectifiers - SCRs and DIACs) are four-layer active semiconductor components designed for high-power, unidirectional AC power switching and control. Once triggered by a small gate current pulse, a thyristor remains in a latching conducting state until the forward current drops below a holding threshold, providing highly reliable solid-state switching for high-voltage, high-current industrial applications.
Thyristors are widely used in industrial motor speed controls, phase-controlled AC-DC rectifiers, soft starters, and high-energy pulse discharge circuits. Key specifications focus on repetitive peak off-state voltage (VDRM), RMS on-state current (IT(RMS)), gate trigger current (IGT), dV/dt immunity (preventing accidental triggering from rapid voltage changes), and rugged packages (TO-220, TO-247, Thyristor modules).
Browse and compare thyristors on Octatronics from industry leaders including STMicroelectronics, Littelfuse, onsemi, and Vishay. Access technical specs, lifecycle statuses, and submit bulk RFQs online.
Frequently Asked Questions
Octatronics can help source a wide range of Thyristors 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.
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