T830T-8FP STMicroelectronics Triac A (Transistor Outline, Vertical) In Stock
The T830T-8FP is an 8 A snubberless TRIAC from STMicroelectronics designed for AC switching and control of resistive and inductive loads up to 800 V. It eliminates the need for RC snubber networks, reducing BOM cost in motor and lamp dimmer circuits. Available from stock worldwide with fast shipping.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- T830T-8FP Datasheet PDF
- Category
- Triac A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of T830T-8FP?
- Snubberless design eliminates the RC snubber network, reducing BOM component count and PCB area in AC power control circuits
- 8 A RMS on-state current rating with up to 800 V voltage blocking capability for mains-connected motor and heating load switching
- TO-220 vertical package enables simple heatsink mounting for efficient thermal management in high-current AC applications
What is T830T-8FP used for?
The T830T-8FP is suited for household appliance motor speed control, lamp and heating element dimmers, and industrial AC power regulators operating on 230 V or 120 V mains. Its snubberless topology makes it particularly effective in circuits driving inductive loads such as fan motors and transformer primaries, where conventional TRIACs require snubber networks. HVAC systems and washing machine drum controllers also use snubberless TRIACs for reliable phase-control switching.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the T830T-8FP datasheet?
T830T-8FP Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for T830T-8FP?
Compatible alternatives and drop-in replacements for T830T-8FP:
Frequently Asked Questions
What does the snubberless characteristic of the T830T-8FP mean for an AC motor drive circuit design?
A snubberless TRIAC like the T830T-8FP is designed to commutate reliably on inductive loads without the RC snubber network (typically 100 Ω in series with 10 nF to 100 nF) required by standard TRIACs. Eliminating the snubber reduces component count by 2 parts per TRIAC, saves PCB area, and removes a source of resistive power loss, simplifying the design of 8 A AC motor drives for fans, pumps, and small appliance controllers.
What is the current and voltage rating of the T830T-8FP, and which mains voltages does it support?
The T830T-8FP is rated for 8 A RMS on-state current and up to 800 V repetitive peak off-state voltage. This voltage rating covers both 120 V (170 V peak) and 230 V (325 V peak) mains systems with substantial margin for line transients and inductive voltage spikes. The 8 A continuous rating handles resistive heating loads up to approximately 1840 W on a 230 V mains supply without derating at ambient temperatures below 40°C.
How should the T830T-8FP's TO-220 package be mounted to manage thermal dissipation in a high-current application?
The T830T-8FP's TO-220 vertical through-hole package has a typical thermal resistance of approximately 3°C/W junction-to-case. At 8 A with a typical on-state voltage drop of 1.2 V, the device dissipates roughly 9.6 W, requiring an external heatsink with thermal resistance below 8°C/W to keep junction temperature below 125°C at a 40°C ambient. Using thermal paste and a clip-mounted heatsink rated at 5°C/W provides comfortable operating margin.
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About STMicroelectronics
STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.
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