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STMicroelectronics T410-800T
- Part No.:
- T410-800T
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-220-3
- Datasheet:
-
T410-800T.pdf
- Description:
- TRIAC SENS GATE 800V 4A TO220AB
- Quantity:
- Payment:
- Shipping:
Inventory:1,950
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Product details
Overview
T410-800T from STMicroelectronics is a 4 A, 800 V three-quadrant logic-level triac in TO-220AB package, designed for AC phase-control switching of inductive loads. It features 10 mA maximum gate trigger current (IGT), 15 mA maximum holding current (IH), and 25 mA maximum latching current (IL), enabling direct drive from microcontrollers without external amplification. Used in universal motor control for power tools and dishwashers.
For engineers reviewing the T410-800T datasheet, T410-800T pinout, T410-800T application, or T410-800T equivalent, key selection criteria include VDRM/VRRM rating, IGT sensitivity, dV/dt immunity (40 V/µs min), thermal resistance (Rth(j-c) = 2.6 °C/W), and snubberless commutation performance in AC inductive switching circuits.
Technical Context
The T410-800T operates as a bidirectional thyristor with three-quadrant triggering capability (Quadrants I, II, III), eliminating false triggering in noisy AC environments. Its Snubberless™ design ensures reliable commutation at high dV/dt (≥40 V/µs) and high dI/dt (≥50 A/µs) without external snubbers.
It delivers 4 A RMS on-state current at Tc = 110 °C with low on-state voltage (VTM ≤ 1.56 V at 5.5 A), supported by thermal resistance Rth(j-c) = 2.6 °C/W. Gate threshold is optimized for logic-level compatibility: VGT ≤ 1.3 V, IGT ≤ 10 mA, and VGD ≥ 0.2 V at 125 °C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(rms) | 4 A - Sustained AC load current handling at case temperature ≤110 °C |
| VDRM / VRRM | 800 V - Peak repetitive off-state blocking voltage in both directions |
| IGT (max) | 10 mA - Maximum gate current required to trigger conduction; enables MCU GPIO direct drive |
| dV/dt (min) | 40 V/µs - Minimum rate of voltage rise before unintended turn-on; supports snubberless operation |
| Rth(j-c) | 2.6 °C/W - Junction-to-case thermal resistance; defines heatsink sizing for 4 A continuous operation |
| VTM (max) | 1.56 V - Maximum on-state voltage at 5.5 A pulse; determines conduction loss and self-heating |
| IH (max) | 15 mA - Maximum holding current; defines minimum load current needed to sustain conduction |
Pinout & Package
TO-220AB package with insulated tab (non-isolated variant also available); standard 3-pin configuration: MT1 (Main Terminal 1), MT2 (Main Terminal 2), and Gate (G). Mounting torque: 0.4–0.6 N·m. UL94 V0, halogen-free epoxy, lead-free compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| MT1 | Anode 1 / Main terminal 1 | Primary current path terminal; referenced as common return in phase-control dimmer/motor circuits |
| MT2 | Anode 2 / Main terminal 2 | Second main current path; polarity reversal relative to MT1 defines quadrant conduction behavior |
| Gate | Trigger control input | Low-energy (≤10 mA) logic-compatible input that initiates conduction when voltage exceeds VGT (≤1.3 V) |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless commutation | Guaranteed dV/dt immunity ≥40 V/µs at 125 °C eliminates need for RC snubber networks in motor control |
| Logic-level gate sensitivity | IGT ≤ 10 mA and VGT ≤ 1.3 V enable direct interface with 3.3 V/5 V microcontrollers and logic ICs |
| Three-quadrant operation | Triggers only in Quadrants I, II, and III - suppresses false turn-on during negative gate pulses in noisy AC environments |
| High surge robustness | ITSM = 31 A (60 Hz, 16.7 ms) supports brief overloads in power tool startup and valve actuation |
| Thermal efficiency | Rth(j-c) = 2.6 °C/W allows 4 A RMS operation with modest heatsinking (e.g., 10 cm² aluminum fin) |
Applications
| Universal Motor Control | Kitchen Appliance Power Switching |
|---|---|
|
Use Scenario: Speed regulation of brushed universal motors in corded drills and angle grinders. IC Role / Device Role / Timing Role: AC phase-angle controller replacing mechanical speed switches; triggered synchronously with zero-crossing detection. Use Value: Enables precise, jitter-free speed control with <15 mA holding current ensuring stable conduction at low RPM. |
Use Scenario: On/off and cycle-based power delivery to heating elements and pumps in dishwashers. IC Role / Device Role / Timing Role: Solid-state relay replacement; handles 800 V transient surges during pump shutdown and heater cooldown. Use Value: 800 V VDRM rating and 40 V/µs dV/dt immunity prevent false triggering during inductive kickback from solenoid valves. |
| Power Tool Safety Interlock | Small Home Appliance Fan Control |
|
Use Scenario: Dual-redundant activation circuit requiring fail-safe gate drive in circular saws and routers. IC Role / Device Role / Timing Role: High-immunity triac used in series with safety switch; triggered only upon validated dual-input logic. Use Value: Three-quadrant triggering prevents accidental turn-on from EMI coupling into gate line during emergency stop transitions. |
Use Scenario: Variable-speed fan control in microwave ovens and range hoods using leading-edge phase-cut. IC Role / Device Role / Timing Role: Bidirectional AC switch synchronized to line voltage zero-crossing for EMI reduction. Use Value: Low 10 mA IGT and 1.3 V VGT allow direct PWM-driven gate timing from 3.3 V MCU timers without level-shifting. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac-based AC switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ST T410-800B | DPAK package (surface-mount), Rth(j-a) = 60 °C/W vs. 2.6 °C/W (j-c); no insulated mounting option | Suitable for compact PCB designs with forced-air cooling; not recommended for >2 A continuous without heatsink | Select when board space is constrained and thermal management uses PCB copper area or airflow |
| Littelfuse Q4010LH5 | 4 A/400 V rating, higher IGT (≤50 mA), TO-220 non-insulated, lower dV/dt immunity (25 V/µs) | Requires gate driver for MCU interfacing; limited to 400 V line applications (e.g., 120 VAC regions) | Select only for cost-sensitive 120 VAC systems where 800 V margin and snubberless operation are unnecessary |
Compared with T410-800B and Q4010LH5, the T410-800T offers superior thermal performance (2.6 °C/W), full 800 V blocking, and true snubberless operation-making it optimal for industrial-grade 230/240 VAC motor controls requiring reliability under voltage transients and thermal stress.
Availability
T410-800T is available at Aetrix Electronics and suitable for universal motor control, kitchen appliance power switching, power tool safety interlocks, and small home appliance fan control requiring stable component supply across long-lifecycle consumer and industrial programs.
Supply support for T410-800T 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, power, MCU, and sensor solutions for automotive, industrial, and consumer markets.
The T4 series belongs to ST's high-reliability AC power switching product line, engineered specifically for snubberless, logic-level triac operation in demanding inductive-load environments like power tools and white goods.
FAQ
What is the maximum junction temperature for continuous operation?
The T410-800T has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at Tj = 125 °C is permitted only when case temperature is maintained at or below 110 °C per the IT(rms) derating curve in Figure 2 of DocID7699 Rev 9. Exceeding this requires active thermal management or current derating.
Can the T410-800T be used without a heatsink?
No - the TO-220AB package requires a heatsink for continuous 4 A RMS operation. At ambient temperatures above 40 °C or with limited airflow, thermal calculations using Rth(j-c) = 2.6 °C/W and Rth(c-s) of the heatsink must ensure Tj stays ≤125 °C. For short-duration pulses (<1 s), limited heatsinking may suffice per Figure 6 surge curves.
Is the TO-220AB variant electrically insulated?
The T410-800T is offered in both insulated and non-insulated TO-220AB versions. The standard part number denotes non-insulated; insulated variants carry suffix "-IS" (e.g., T410-800T-IS) and feature reinforced isolation between the metal tab and internal die, rated to 2500 VAC for safety-critical applications.
Does this triac support zero-crossing switching?
The T410-800T itself does not integrate zero-crossing detection - it is a passive switching device. However, it is fully compatible with external zero-crossing controllers (e.g., MOC30xx optocouplers) due to its three-quadrant triggering and low IGT. Zero-crossing turn-on minimizes EMI and inrush current when driving inductive loads.
T410-800T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 800 V
- Current - On State (It (RMS)) (Max):
- 4 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 30A, 31A
- 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:
- Through Hole
- Supplier Device Package:
- TO-220AB
T410-800T FAQ
1.How can I place an order for T410-800T through Aetrix?
Please submit a Request for Quotation (RFQ) for T410-800T 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 T410-800T reliable?
The price and inventory of T410-800T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T410-800T is usually 5 days.
3.What payment methods are accepted for T410-800T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T410-800T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T410-800T?
T410-800T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T410-800T 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 T410-800T?
For technical support, including T410-800T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T410-800T requirements.
6.How does Aetrix verify that T410-800T is sourced from the original manufacturer or authorized distributors?
All T410-800T 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 T410-800T meets industry standards.
7.What is the process for return or replacement of T410-800T?
All T410-800T units undergo pre-shipment inspection (PSI). If there is an issue with T410-800T, 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 T410-800T part is unused and in its original packaging.
Return procedure for T410-800T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T410-800T Tags
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Z0103NN5AA4
STMicroelectronics
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Littelfuse Inc.
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Z0103MNT1G
Littelfuse Inc.
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BTA08-600CWRG
STMicroelectronics
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T835H-6G-TR
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