T835T-8FPB STMicroelectronics Triac A (Transistor Outline, Vertical) In Stock
The T835T-8FPB is a snubberless TRIAC from STMicroelectronics rated at 8 A RMS current, 800 V repetition peak off-state voltage (VRRM), and 35 mA gate trigger current. Packaged in a TO-220AB through-hole package, it is designed for AC power switching in consumer and industrial applications.
- Manufacturer
- STMicroelectronics
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- ACTIVE
- Datasheet
- T835T-8FPB Datasheet PDF
- Category
- Triac A
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of T835T-8FPB?
- 8 A RMS on-state current with snubberless turn-off technology
- 800 V VRRM and 900 V VRSM voltage ratings for robust AC line operation
- 35 mA gate trigger current enabling direct microcontroller or optocoupler drive
- TO-220AB through-hole package for easy heat-sinking and board mounting
- Designed for phase-control and full-wave switching in 50/60 Hz AC mains applications
What is T835T-8FPB used for?
The T835T-8FPB is well suited for household appliance motor control, lighting dimmers, and heating element regulation operating from 230 V AC mains. Its snubberless design simplifies the surrounding circuit by eliminating the RC snubber network typically required for inductive loads. Industrial soft-start modules, fan speed controllers, and pump control systems also benefit from its robust voltage and current ratings.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the T835T-8FPB datasheet?
T835T-8FPB Datasheet DownloadOfficial datasheet from STMicroelectronics
What are equivalent replacements for T835T-8FPB?
Compatible alternatives and drop-in replacements for T835T-8FPB:
Frequently Asked Questions
Can the T835T-8FPB directly switch an inductive load such as a washing-machine motor without an RC snubber?
Yes. The T835T-8FPB uses STMicroelectronics snubberless technology, allowing it to commutate reliably on inductive loads at 8 A RMS and up to 800 V VRRM without requiring an external RC snubber network. This reduces BOM count and PCB area.
What gate drive current does the T835T-8FPB require, and can a standard optocoupler supply it?
The T835T-8FPB has a gate trigger current (IGT) of 35 mA. Many dedicated TRIAC-driver optocouplers, such as those rated to 50 mA or 100 mA output, can satisfy this requirement directly, simplifying isolation circuitry in mains-connected designs.
How does the T835T-8FPB's 800 V VRRM rating relate to safe operation on a 230 V AC line?
A 230 V RMS AC supply has a peak voltage of approximately 325 V. The 800 V VRRM rating provides more than 2x safety margin above the peak, and the 900 V VRSM rating accommodates transient overvoltages, making the device well suited for European 230 V mains applications.
Is the TO-220AB package of the T835T-8FPB compatible with standard heat sinks used in appliance control boards?
Yes. The TO-220AB package is an industry-standard through-hole outline with a mounting hole for a screw-attached heat sink. With 3 pins on a 2.54 mm pitch and a metal tab for thermal contact, it fits widely available clip-on or bolt-on heat sinks rated for junction-to-case thermal resistance.
Related Guides
DP83TG720SWRHATQ1 Automotive Ethernet PHY Selection Guide
Choose DP83TG720SWRHATQ1 by comparing MAC interfaces, exact ordering codes, qualification evidence, and documented supply offers.
Nov 15, 2026
TLV76033 Selection Guide: Headroom, Heat, and Sourcing
Choose a TLV76033 3.3-V supply using manufacturer ratings, load profiles, dropout calculations, thermal checks, and exact orderable parts.
Nov 14, 2026
DP83TG720SWRHATQ1 Automotive Ethernet Board Design Guide
A practical DP83TG720SWRHATQ1 board checklist for host interfaces, startup, channel validation, qualified variants, and sourcing.
Nov 14, 2026
BQ76942PFBR Battery Monitor Selection and Procurement Guide
Choose BQ76942PFBR by cell count, protection architecture, factory configuration, measurement needs, and a controlled sourcing specification.
Nov 13, 2026
Why Buy from FindMyChip
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.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”