My Inquiry
My Account
STMicroelectronics T810-800B-TR
- Part No.:
- T810-800B-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
T810-800B-TR.pdf
- Description:
- TRIAC SENS GATE 800V 8A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:8,201
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
T810-800B-TR from STMicroelectronics is a snubberless, logic-level 8 A triac in DPAK package rated for 800 V repetitive peak off-state voltage (VDRM/VRRM), with 10 mA maximum gate trigger current (IGT) and 1.55 V maximum on-state voltage (VTM) at 11 A. It operates across -40 °C to +125 °C junction temperature and delivers stable AC switching in phase-control motor speed controllers and static relays driving inductive loads.
For engineers reviewing the T810-800B-TR datasheet, T810-800B-TR pinout, T810-800B-TR application, or T810-800B-TR equivalent, this device is selected for high-commutation inductive load switching where low IGT, snubberless operation, and surface-mount compatibility are required - especially in microcontroller-driven dimmer and heating regulation designs.
Technical Context
This triac belongs to ST's T8 series of 3-quadrant snubberless logic-level devices, optimized for reliable turn-on with minimal gate drive. Its design eliminates external snubbers in inductive applications by guaranteeing ≥400 V/µs critical dV/dt immunity and ≥5.4 A/ms critical dl/dt at 125 °C.
It features a ceramic-insulated die structure enabling direct mounting on PCBs without isolation hardware, and supports full-cycle AC conduction with RMS on-state current up to 8 A at case temperature ≤110 °C. Gate sensitivity is specified across quadrants I, II, and III, with guaranteed minimum IGT at 5% of max rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A - Sustained AC load current capability at Tc = 110 °C, suitable for continuous motor control and heater regulation. |
| VDRM / VRRM | 800 V - Peak blocking voltage per half-cycle, enabling use in 230 VAC mains with safety margin. |
| IGT (max) | 10 mA - Maximum gate trigger current required in quadrant I/II/III, allowing direct drive from MCU GPIOs. |
| VTM (max) | 1.55 V @ 11 A - On-state voltage drop defining conduction loss and thermal dissipation under full load. |
| dV/dt (min) | 400 V/µs @ Tj = 125 °C - Critical rate-of-rise immunity ensuring false triggering avoidance in noisy inductive environments. |
| Rth(j-c) | 1.6 °C/W - Junction-to-case thermal resistance enabling efficient heatsinking via DPAK tab mounting. |
| ITSM (50 Hz) | 80 A - Non-repetitive surge current handling for motor startup or transient overload protection. |
Pinout & Package
DPAK (TO-252) surface-mount package with insulated copper tab rated for 2500 VRMS isolation; thermally optimized for PCB copper area ≥1 cm².
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main Terminal 1 | Reference terminal for gate trigger; connected to load return path in standard triac configuration. |
| A2 | Main Terminal 2 | High-side AC line connection; carries full load current and defines voltage polarity reference for triggering. |
| G | Gate | Low-current control input; triggers conduction when pulsed with ≥10 mA (IGT) relative to A1. |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless operation | Guaranteed commutation robustness up to 400 V/µs dV/dt and 5.4 A/ms dl/dt enables elimination of RC snubber networks in motor and solenoid drivers. |
| Logic-level gate drive | 10 mA max IGT allows direct interface with 3.3 V/5 V microcontrollers without external buffer transistors. |
| 3-quadrant triggering | Valid gate triggering in quadrants I, II, and III only - suppresses unwanted turn-on in quadrant IV, improving noise immunity. |
| DPAK surface-mount package | Compact footprint with exposed thermal pad supports automated assembly and efficient PCB-level heat transfer without mechanical fasteners. |
| UL-certified insulation | Ceramic pad isolates the tab to 2500 VRMS, satisfying reinforced insulation requirements for Class I appliances and industrial controls. |
Applications
| Light Dimming Systems | Induction Motor Start Circuits |
|---|---|
|
Use Scenario: Phase-angle controlled 230 VAC lighting circuits using zero-crossing detection and PWM-modulated firing angle. IC Role / Device Role / Timing Role: Bidirectional AC switch triggered synchronously with AC zero-crossing to regulate RMS power delivered to incandescent or halogen lamps. Use Value: Eliminates need for external snubber components while maintaining clean turn-off under highly capacitive lamp filament loads. |
Use Scenario: Solid-state replacement for electromechanical contactors in single-phase induction motor starters (e.g., HVAC blowers, pumps). IC Role / Device Role / Timing Role: High-current AC switch enabling soft-start sequencing and overcurrent-protected run control via microcontroller timing. Use Value: Withstands high inrush currents (≥80 A) and sustains 8 A RMS during continuous operation without thermal runaway. |
| Heating Regulation Modules | Static Relays for Industrial PLC Outputs |
|
Use Scenario: Proportional-integral (PI) controlled resistive heating elements in ovens, soldering stations, and process heaters. IC Role / Device Role / Timing Role: Precision AC power modulator executing burst-fire or phase-control output based on temperature feedback loop. Use Value: Low 10 mA IGT ensures compatibility with isolated digital outputs; 800 V rating accommodates 400 VAC industrial supply margins. |
Use Scenario: Output stage of DIN-rail mounted PLC modules switching 230 VAC solenoids, valves, and indicator lamps. IC Role / Device Role / Timing Role: Fail-safe, long-life solid-state relay replacing mechanical contacts in high-cycle industrial automation. Use Value: UL-rated 2500 VRMS isolation and 1.6 °C/W Rth(j-c) enable direct PCB mounting with no additional creepage/clearance barriers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTA08-800BWRG | TO-220AB insulated package; 50 mA IGT; higher thermal mass but requires mechanical mounting and heatsink. | Preferred where higher surge robustness and legacy through-hole assembly are prioritized over board space. | Select when system layout permits larger footprint and thermal management via bolted heatsink is preferred. |
| T835-800B-TR | DPAK package; 35 mA IGT; snubberless but not logic-level - requires gate driver for MCU interfacing. | Suitable for cost-sensitive industrial controls where gate drive circuitry already exists. | Choose if existing design uses discrete gate buffers and higher IGT tolerance simplifies BOM consolidation. |
Compared with BTA08-800BWRG, T810-800B-TR offers superior board-level integration and lower gate drive burden; versus T835-800B-TR, it reduces MCU GPIO loading and eliminates external level-shifting, at the cost of slightly lower dV/dt immunity (400 vs. 1000 V/µs).
Availability
T810-800B-TR is available at Aetrix Electronics and suitable for light dimming systems, induction motor start circuits, heating regulation modules, and static relays requiring stable component supply across automotive aftermarket, industrial automation, and consumer appliance programs.
Supply support for T810-800B-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
STMicroelectronics is a global semiconductor leader headquartered in Geneva, Switzerland, designing and manufacturing analog, mixed-signal, power, and microcontroller solutions for industrial, automotive, and consumer markets.
The T8 series triacs are engineered specifically for snubberless, logic-compatible AC power control in space-constrained, high-reliability applications - emphasizing inductive load commutation, low gate drive, and surface-mount manufacturability.
FAQ
Is T810-800B-TR compatible with 3.3 V microcontrollers?
Yes - its maximum gate trigger current (IGT) is 10 mA at 25 °C, and typical IGT drops to ~5 mA at elevated temperatures. A 3.3 V MCU GPIO can drive it directly through a 330 Ω series resistor, delivering ~10 mA with sufficient margin for reliable turn-on across temperature and voltage tolerances.
Does T810-800B-TR require a heatsink in standard operation?
At 8 A RMS load current and Tc ≤110 °C, the DPAK package's 1.6 °C/W Rth(j-c) requires a minimum 1 cm² copper pour on FR4 PCB. No external heatsink is needed for ambient temperatures ≤50 °C and moderate airflow; forced cooling extends safe operating area for sustained full-load duty cycles.
What is the difference between "snubberless" and "standard" triacs in this family?
Snubberless triacs like T810-800B-TR feature enhanced commutation parameters: ≥400 V/µs dV/dt and ≥5.4 A/ms dl/dt at 125 °C. This allows safe turn-off under high-inductance loads without external RC snubbers, whereas standard triacs (e.g., BTA08-800C) require snubbers to prevent false re-triggering during voltage transients.
Can T810-800B-TR replace BTA08-600B in an existing design?
Yes - both are 8 A, 600–800 V snubberless triacs in logic-level variants. T810-800B-TR offers identical electrical specs at 800 V rating and matches BTA08-600B's 10 mA IGT, but in smaller DPAK instead of TO-220AB. Layout redesign is required for footprint and thermal pad routing, but gate drive and control logic remain unchanged.
T810-800B-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 8 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 80A, 84A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 15 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- DPAK
T810-800B-TR FAQ
1.How can I place an order for T810-800B-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T810-800B-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for T810-800B-TR reliable?
The price and inventory of T810-800B-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T810-800B-TR is usually 5 days.
3.What payment methods are accepted for T810-800B-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T810-800B-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T810-800B-TR?
T810-800B-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T810-800B-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for T810-800B-TR?
For technical support, including T810-800B-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T810-800B-TR requirements.
6.How does Aetrix verify that T810-800B-TR is sourced from the original manufacturer or authorized distributors?
All T810-800B-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that T810-800B-TR meets industry standards.
7.What is the process for return or replacement of T810-800B-TR?
All T810-800B-TR units undergo pre-shipment inspection (PSI). If there is an issue with T810-800B-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The T810-800B-TR part is unused and in its original packaging.
Return procedure for T810-800B-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T810-800B-TR Tags
-
Z0103NN5AA4
STMicroelectronics
-
Z0107MNT1G
Littelfuse Inc.
-
Z0103MNT1G
Littelfuse Inc.
;;2.jpg)
-
T405-800B-TR
STMicroelectronics
-
T835-600B-TR
STMicroelectronics
.JPG)
-
2N6073BG
Littelfuse Inc.
-
2N6075BG
Littelfuse Inc.
-
BTA08-600CWRG
STMicroelectronics
-
T835H-6G-TR
STMicroelectronics
-
BTA16-800BRG
STMicroelectronics
-
T1210-800G-TR
STMicroelectronics
-
MAC4DHMT4G
Littelfuse Inc.
Tech Hub
Counterfeit components can hide behind convincing markings and passing basic function tests. This engineering reference covers source traceability, external inspection, X-ray, XRF, electrical testing, …
A practical engineering and sourcing framework covering lifecycle verification, lifetime-buy calculations, replacement qualification, supplier checks and counterfeit-risk controls.
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
