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STMicroelectronics T410-800B
- Part No.:
- T410-800B
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Datasheet:
-
T410-800B.pdf
- Description:
- TRIAC SENS GATE 800V 4A DPAK
- Quantity:
- Payment:
- Shipping:
Inventory:6,158
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Product details
Overview
T410-800B from STMicroelectronics is a 4 A, 800 V three-quadrant logic-level triac in DPAK package, designed for snubberless AC switching in inductive loads. It features 10 mA maximum gate trigger current (IGT), 15 mA maximum holding current (IH), and 40 V/µs minimum critical dV/dt at 125 °C - enabling reliable triggering and commutation in universal motor control and small appliance power stages.
For engineers reviewing the T410-800B datasheet, T410-800B pinout, T410-800B application, or T410-800B equivalent, key selection criteria include RMS current rating (4 A), blocking voltage (800 V), gate sensitivity (10 mA IGT), thermal resistance (70 °C/W junction-to-ambient), and DPAK package suitability for PCB-mounted motor drive modules.
Technical Context
The T410-800B implements ST's Snubberless logic-level triac architecture, supporting direct microcontroller GPIO triggering without external amplification. Its three-quadrant operation excludes quadrant I triggering only, reducing false turn-on risk under noisy AC line conditions.
It delivers 30 A non-repetitive surge current (50 Hz, 20 ms) and maintains ≥40 V/µs dV/dt immunity at 125 °C - critical for stable commutation in universal motor phase-control circuits with high inductive kickback.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(rms) | 4 A - supports continuous load current up to 4 A RMS in full-sine-wave AC applications |
| VDRM / VRRM | 800 V - blocks peak line voltages up to 800 V, suitable for 230 VAC mains with safety margin |
| IGT (max) | 10 mA - compatible with standard MCU GPIO outputs (3.3 V/5 V) without driver stage |
| dV/dt (min) | 40 V/µs at 125 °C - prevents spurious turn-on during rapid voltage transients on inductive loads |
| Rth(j-a) | 70 °C/W - requires ≥4.95 mm × 5.46 mm copper pad (FR4, 35 µm) for thermal compliance at full load |
| IH (max) | 15 mA - ensures reliable hold-on during low-current motor startup or partial-load conduction |
| VTM (max) | 1.56 V at 5.5 A - limits conduction loss to ≤8.6 W at rated RMS current (4 A) |
Pinout & Package
DPAK (TO-252) surface-mount package with isolated tab; thermally optimized for PCB copper area mounting per Figure 13 footprint (5.97–6.22 mm × 6.35–6.73 mm); lead-free, halogen-free, UL94 V0 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connected to neutral or low-side return path in AC load circuits |
| A2 (MT2) | Main Terminal 2 | High-side AC load connection; carries full load current and withstands 800 V blocking voltage |
| G | Gate | Logic-level control input; triggers conduction when pulsed ≥10 mA (typ. 5–10 mA) relative to A1 |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless operation | Eliminates need for external RC snubber networks in 230 VAC inductive loads, reducing BOM count and board space |
| Three-quadrant triggering | Enables robust gate control by excluding quadrant I (A2+, G+), minimizing noise-induced misfiring |
| Logic-level gate sensitivity | 10 mA IGT max allows direct drive from STM32, ESP32, or PIC GPIO pins without buffer transistors |
| High dV/dt immunity | 40 V/µs at 125 °C ensures stable operation in power tools and kitchen appliances with fast-switching inductive transients |
| Thermal performance | 70 °C/W Rth(j-a) enables 4 A RMS operation with minimal copper area (≥4.5 cm² recommended) |
Applications
| Universal Motor Control | Kitchen Appliance Power Switching |
|---|---|
|
Use Scenario: Phase-angle dimming and speed control of brushed universal motors in vacuum cleaners and blenders. IC Role / Device Role / Timing Role: Main AC power switch; triggered synchronously with zero-crossing detection to regulate RMS voltage delivered to motor windings. Use Value: Enables precise 0–100% speed control with <15 mA holding current ensuring motor remains engaged at low speeds. |
Use Scenario: On/off and cycle control of heating elements and pump motors in dishwashers and coffee makers. IC Role / Device Role / Timing Role: Solid-state relay replacement; switches 230 VAC loads under microcontroller PWM or timed burst-fire control. Use Value: 800 V VDRM provides 2.5× safety margin over 230 VAC peak (325 V), preventing breakdown during surge events. |
| Power Tool Trigger Circuits | Electrovalve Actuation |
|
Use Scenario: Variable-speed trigger control in corded drills and sanders using potentiometer-adjusted firing angle. IC Role / Device Role / Timing Role: High-current AC switch interfacing between MCU timing logic and motor winding; handles 30 A surge during stall conditions. Use Value: 30 A ITSM rating sustains momentary overloads during bit jamming without failure. |
Use Scenario: Fast-acting on/off control of solenoid valves in HVAC systems and washing machine water inlets. IC Role / Device Role / Timing Role: Zero-voltage turn-on switch; minimizes EMI and contact arcing compared to mechanical relays. Use Value: 40 V/µs dV/dt immunity prevents false triggering from line noise generated by adjacent compressor or pump switching. |
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 |
|---|---|---|---|
| BT139-800 | 4 A IT(rms), 800 V VDRM, but 35 mA IGT (not logic-level); TO-220 package | Requires gate driver stage; unsuitable for direct MCU GPIO drive | Select when higher surge rating (65 A ITSM) is prioritized over gate simplicity |
| T410-800T | Identical electrical specs, but TO-220AB through-hole package with insulated tab and 60 °C/W Rth(j-a) | Better thermal performance in heatsinked designs; larger footprint and manual assembly | Select when mechanical robustness, field serviceability, or heatsink mounting is required |
Compared with BT139-800 and T410-800T, the T410-800B uniquely combines logic-level gate drive (10 mA IGT), surface-mount DPAK packaging, and snubberless operation - optimizing for compact, driverless, high-volume appliance PCBs.
Availability
T410-800B is available at Aetrix Electronics and suitable for universal motor control, kitchen appliance power switching, power tool trigger circuits, and electrovalve actuation requiring stable component supply across industrial production cycles.
Supply support for T410-800B 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, specializing in power discrete devices, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.
The T4 series triacs were engineered specifically for snubberless, logic-level AC switching in cost-sensitive, high-volume home appliance and power tool applications - emphasizing reliability, gate simplicity, and thermal efficiency in DPAK and TO-220AB packages.
FAQ
What is the maximum junction temperature for continuous operation of the T410-800B?
The T410-800B has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at 125 °C requires strict adherence to thermal design rules: use ≥4.95 mm × 5.46 mm copper pad (FR4, 35 µm), limit ambient temperature to ≤75 °C, and ensure no sustained overload beyond 4 A RMS.
Can the T410-800B be used without a snubber circuit?
Yes - the T410-800B is explicitly designed as a snubberless triac. Its 40 V/µs dV/dt rating at 125 °C and optimized internal structure eliminate the need for external RC snubbers in typical 230 VAC inductive loads like universal motors and solenoids, provided layout minimizes stray inductance.
Is the DPAK package of the T410-800B electrically insulated?
No - the DPAK package has an electrically conductive tab connected to A2 (MT2). Isolation must be achieved externally via insulating thermal pads or ceramic substrates. For insulated solutions, consider the T410-800H (IPAK) or T410-800T (TO-220AB insulated variant).
How does the T410-800B differ from the T435-800B in practical use?
The T435-800B has higher gate trigger current (35 mA vs. 10 mA), making it incompatible with direct MCU GPIO drive without a transistor buffer. It offers superior dV/dt immunity (400 V/µs) and higher dI/dt capability, targeting high-noise industrial environments where gate drive circuitry is already present.
T410-800B Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-252-3, DPAK (2 Leads + Tab), SC-63
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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:
- Surface Mount
- Supplier Device Package:
- DPAK
T410-800B FAQ
1.How can I place an order for T410-800B through Aetrix?
Please submit a Request for Quotation (RFQ) for T410-800B 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 T410-800B reliable?
The price and inventory of T410-800B are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T410-800B is usually 5 days.
3.What payment methods are accepted for T410-800B?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T410-800B transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T410-800B?
T410-800B orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T410-800B 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 T410-800B?
For technical support, including T410-800B datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T410-800B requirements.
6.How does Aetrix verify that T410-800B is sourced from the original manufacturer or authorized distributors?
All T410-800B 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 T410-800B meets industry standards.
7.What is the process for return or replacement of T410-800B?
All T410-800B units undergo pre-shipment inspection (PSI). If there is an issue with T410-800B, 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 T410-800B part is unused and in its original packaging.
Return procedure for T410-800B:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T410-800B Tags
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Z0103NN5AA4
STMicroelectronics
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