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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T410-700H

Name: T410-700H
Brand: STMicroelectronics
SKU: T410-700H
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T410-700H

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-251-3 Short Leads, IPAK, TO-251AA

Datasheet:: T410-700H.pdf

Description:: TRIAC SENS GATE 700V 4A IPAK

Quantity:: RFQ Add To RFQ list

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Inventory:6,619

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Product details

Overview

T410-700H from STMicroelectronics is a 4 A, 700 V three-quadrant logic-level triac in IPAK package, designed for snubberless AC switching in inductive loads. It features 10 mA max gate trigger current (IGT), 15 mA max 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 T410-700H datasheet, T410-700H pinout, T410-700H application, or T410-700H equivalent, key selection criteria include its 700 V VDRM rating, IPAK thermal resistance (Rth(j-c) = 2.6 °C/W), logic-level gate sensitivity (10 mA IGT), and suitability for snubberless operation in 50/60 Hz AC mains environments.

Technical Context

The T410-700H implements ST's Snubberless logic-level triac architecture, supporting quadrant I, II, and III triggering without external snubbers. Its 40 V/µs dV/dt immunity at 125 °C and 2.7 A/ms critical rate of decrease of on-state current (dI/dt)c ensure robust commutation under reactive load transients.

It operates with a low 10 mA maximum gate trigger current and delivers 1.56 V max on-state voltage (VTM) at 5.5 A, optimized for thermal efficiency in compact PCB layouts. The IPAK package provides 2.6 °C/W junction-to-case thermal resistance, enabling 4 A RMS conduction at TC = 110 °C without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(rms)	4 A - Sustained RMS current handling for continuous AC load switching up to 900 W at 230 VAC.
VDRM / VRRM	700 V - Peak repetitive off-state voltage rating, suitable for 230 VAC mains with 2× safety margin.
IGT (max)	10 mA - Logic-level gate drive compatibility with microcontrollers and optocouplers without amplification.
dV/dt (min)	40 V/µs at 125 °C - Enables snubberless operation in inductive motor circuits with fast voltage transients.
I²t (fusing)	5.1 A²s - Surge withstand capability for 10 ms pulses, supporting brief overloads in power tool startups.
Rth(j-c)	2.6 °C/W - Low thermal resistance enables high-power density mounting on small copper pads without heatsink.
VTM (max)	1.56 V at 5.5 A - Low conduction loss reduces self-heating and improves system efficiency in 4 A applications.

Pinout & Package

IPAK package (plastic surface-mount with insulated tab); dimensions per ST DocID7699 Rev 9 Table 8: 6.0–6.2 mm D, 6.4–6.65 mm E, 16.1 mm H, 9–9.6 mm L; UL94 V0, halogen-free, lead-free.

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate triggering; connects to neutral or low-side AC line in phase-control topologies.
A2 (MT2)	Main Terminal 2	High-current AC load path terminal; carries full load current during conduction in both polarities.
G	Gate	Logic-level control input; triggers conduction when pulsed ≥10 mA relative to A1 in quadrants I, II, or III.

Key Features

Feature	Design Value
Snubberless operation	Validated for inductive loads up to 40 V/µs dV/dt at 125 °C - eliminates snubber RC networks and saves board space.
Three-quadrant triggering	Supports gate triggering in quadrants I, II, and III only - improves noise immunity vs. four-quadrant triacs in noisy motor environments.
Logic-level gate sensitivity	10 mA max IGT enables direct drive from MCU GPIO or low-output-current optocouplers (e.g., MOC302x).
High commutation performance	2.7 A/ms (dI/dt)c at 10 V/µs ensures reliable turn-off during zero-crossing interruption of inductive currents.
Thermally optimized IPAK	2.6 °C/W Rth(j-c) allows 4 A RMS operation at 110 °C case temperature - supports compact, fanless designs.

Applications

Universal Motor Speed Control

Kitchen Appliance Power Switching

Use Scenario: Variable-speed control of brushed universal motors in hand mixers and blenders using phase-angle dimming.

IC Role / Device Role / Timing Role: Main AC power switch triggered by zero-crossing synchronized gate pulses to regulate RMS voltage applied to motor windings.

Use Value: Eliminates need for snubber components while maintaining stable commutation across 0–100% speed range and 50–60 Hz line frequency.

Use Scenario: On/off and cycle-based power control for heating elements and pump motors in dishwashers and coffee makers.

IC Role / Device Role / Timing Role: Solid-state relay replacement for AC load switching, driven by microcontroller PWM or burst-fire timing signals.

Use Value: 700 V VDRM and 4 A IT(rms) support 230 VAC resistive and inductive loads up to 900 W with long-term reliability.

Power Tool Trigger Circuits

Electrovalve Actuation

Use Scenario: High-reliability AC switching in corded drills and sanders where mechanical switches suffer arcing and contact wear.

IC Role / Device Role / Timing Role: Bidirectional AC switch activated by momentary trigger signal; handles surge currents during motor startup.

Use Value: 31 A non-repetitive surge rating (60 Hz, 16.7 ms) accommodates 5× locked-rotor current without failure.

Use Scenario: Precise 50/60 Hz AC energization of solenoid valves in HVAC and irrigation controllers.

IC Role / Device Role / Timing Role: Zero-voltage turn-on switch ensuring EMI-free actuation and minimal contact bounce simulation.

Use Value: 15 mA max holding current (IH) guarantees latching during short AC half-cycles, preventing unintended dropout.

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
T410-700T	Same electrical specs, but TO-220AB through-hole package with insulated tab; Rth(j-c) = 2.6 °C/W identical, but higher Rth(j-a) = 60 °C/W.	Better suited for prototyping or high-vibration environments requiring mechanical anchoring; requires heatsink for >2 A continuous use.	Select when board assembly uses through-hole processes or when thermal interface to external heatsink is preferred over PCB copper area.
T410-700B	DPAK package; identical voltage/current ratings but higher Rth(j-c) = 2.6 °C/W same, yet smaller copper footprint requirement (S = 0.5 cm² vs IPAK's larger pad).	Optimized for ultra-compact consumer PCBs; lower mass enables faster thermal response but reduced steady-state power handling at high ambient.	Select for space-constrained designs where 4 A RMS must be sustained with minimal copper area and no heatsink.

Compared with T410-700T and T410-700B, the T410-700H offers superior thermal coupling to large PCB copper planes via its IPAK insulated tab, enabling higher sustained power density without added heatsinking - ideal for automated SMT production of mid-power appliances.

Availability

T410-700H 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 and consumer production programs.

Supply support for T410-700H 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, microcontroller, 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 cost-sensitive, thermally constrained AC mains applications.

FAQ

Is T410-700H compatible with zero-crossing optocouplers like MOC3041?

Yes - T410-700H's 10 mA max IGT and 1.3 V max VGT align directly with MOC3041's 15 mA output capability and 1.3 V forward voltage. Its three-quadrant operation avoids false triggering from noise-induced gate currents common in four-quadrant devices, making it especially robust in zero-crossing drive configurations.

What is the minimum copper area required for thermal management on FR4 PCB?

Per ST DocID7699 Rev 9 Figure 11, 4 A RMS operation at TC = 110 °C requires ≥20 cm² of 35 µm copper on one side under the IPAK tab. For intermittent 4 A loads, 8 cm² suffices; below 2 A RMS, 2–3 cm² maintains safe junction temperature with natural convection.

Does T410-700H require a snubber circuit for driving universal motors?

No - T410-700H is explicitly characterized for snubberless operation with inductive loads. Its 40 V/µs dV/dt rating at 125 °C and 2.7 A/ms (dI/dt)c ensure reliable commutation without external RC networks, provided gate drive meets IGT and di/dt requirements and layout minimizes stray inductance.

How does the IPAK package compare to TO-220AB in terms of mounting and insulation?

T410-700H's IPAK has an electrically insulated metal tab rated to 2500 V isolation, identical to insulated TO-220AB variants. Unlike TO-220AB, IPAK mounts flat to PCB with solder-reflow-compatible terminals and no mechanical screw torque requirement - simplifying automated assembly and eliminating mounting hardware.

T410-700H Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: -

Package/Case:: TO-251-3 Short Leads, IPAK, TO-251AA

Packaging:: Tube

Product Status:: Obsolete

Triac Type:: Logic - Sensitive Gate

Voltage - Off State:: 700 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:: IPAK

T410-700H FAQ

1.How can I place an order for T410-700H through Aetrix?

Please submit a Request for Quotation (RFQ) for T410-700H 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 T410-700H reliable?

The price and inventory of T410-700H are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T410-700H is usually 5 days.

3.What payment methods are accepted for T410-700H?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T410-700H transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T410-700H?

T410-700H orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T410-700H 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 T410-700H?

For technical support, including T410-700H datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T410-700H requirements.

6.How does Aetrix verify that T410-700H is sourced from the original manufacturer or authorized distributors?

All T410-700H 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 T410-700H meets industry standards.

7.What is the process for return or replacement of T410-700H?

All T410-700H units undergo pre-shipment inspection (PSI). If there is an issue with T410-700H, 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 T410-700H part is unused and in its original packaging.

Return procedure for T410-700H:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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