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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T1210-6G-TR

Name: T1210-6G-TR
Brand: STMicroelectronics
SKU: T1210-6G-TR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: T1210-6G-TR

Manufacturer:: STMicroelectronics

Category:: TRIACs

Package:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Datasheet:: T1210-6G-TR.pdf

Description:: TRIAC ALTERNISTOR 600V 12A D2PAK

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Product details

Overview

T1210-6G-TR from STMicroelectronics is a Snubberless™ logic-level triac in D²PAK package, rated for 12 A RMS on-state current and 600 V repetitive peak off-state voltage, with 10 mA maximum gate trigger current (IGT) in quadrants I/II/III, designed for inductive AC load switching in LED dimmers and appliance motor speed controllers.

For engineers reviewing the T1210-6G-TR datasheet, T1210-6G-TR pinout, T1210-6G-TR application, or T1210-6G-TR equivalent, key selection criteria include commutation robustness under inductive loads, insulated thermal performance, gate sensitivity for low-power drive, and RoHS-compliant surface-mount packaging.

Technical Context

This triac operates in three quadrants (I/II/III) with Snubberless™ architecture enabling reliable commutation without external snubbers on inductive loads. Its internal ceramic insulation provides 2500 VRMS isolation between tab and die, meeting UL1557 certification (E81734).

Designed for phase-control AC switching, it features a low 10 mA IGT and high dV/dt immunity (500 V/µs at 125 °C), supporting direct microcontroller gate drive while maintaining stable turn-off under reactive load conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	12 A - supports continuous mains-powered loads up to 2.6 kW at 230 VAC
VDRM / VRRM	600 V - withstands peak line voltages in global 230 VAC and 120 VAC systems
IGT (max)	10 mA - enables direct drive from low-current GPIOs or logic-level drivers
dV/dt (min)	500 V/µs at 125 °C - prevents false triggering during fast transients on inductive loads
Rth(j-c)	1.4 °C/W - enables efficient heat transfer to heatsink in compact SMT layouts
VTM (max)	1.55 V at 17 A - limits conduction loss to ≤26 W at full RMS current
Isolation Voltage	2500 VRMS - satisfies reinforced insulation requirements for Class I appliances

Pinout & Package

D²PAK (TO-263) surface-mount package with insulated tab, 3-pin configuration, and copper pad thermal path optimized for PCB heatsinking (S = 1–4 cm²).

Pin/Terminal	Circuit Role	Design Meaning
A1 (MT1)	Main Terminal 1	Reference terminal for gate trigger; connects to load return or neutral side of AC circuit
A2 (MT2)	Main Terminal 2	High-side AC line connection; carries full load current and defines voltage polarity reference
G	Gate	Low-energy control input; triggers conduction when pulsed with ≥10 mA into A1 reference

Key Features

Feature	Design Value
Snubberless™ operation	Eliminates need for external RC snubber networks on inductive loads like motors and transformers
Logic-level gate drive	10 mA IGT allows direct interface with 3.3 V/5 V microcontrollers without buffer stages
UL1557-certified insulation	2500 VRMS reinforced isolation meets safety standards for double-insulated consumer appliances
High commutation capability	Supports 3-quadrant switching with (dI/dt)c ≥ 6.5 A/ms at 10 V/µs dV/dt stress
RoHS & ECOPACK2®	Lead-free terminations and halogen-free molding compound compliant with EU environmental directives

Applications

LED Dimmer Control

Induction Motor Starter

Use Scenario: Phase-cut dimming of mains-powered LED lamps with trailing-edge or leading-edge topology.

IC Role / Device Role / Timing Role: Main AC power switch controlling conduction angle per half-cycle to regulate average lamp power.

Use Value: Enables flicker-free dimming down to 1 % brightness using logic-level gate drive and eliminates snubber losses.

Use Scenario: Soft-start and ON/OFF control of single-phase induction motors in washing machines or fans.

IC Role / Device Role / Timing Role: High-current AC switch triggered by MCU-controlled zero-crossing timing to minimize inrush current.

Use Value: Prevents contact welding and relay chatter while sustaining 12 A motor surge currents up to 126 A (20 ms).

Heating Element Regulator

Static Relay Replacement

Use Scenario: Proportional time-based control of resistive heating elements in ovens or water heaters.

IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical relays, switched at zero-crossing for EMI reduction.

Use Value: Delivers 12 A RMS continuous current with <1.55 V conduction drop, reducing thermal derating vs. mechanical relays.

Use Scenario: Isolated AC output stage in programmable logic controller (PLC) digital output modules.

IC Role / Device Role / Timing Role: Output driver providing galvanically isolated, high-reliability switching for industrial AC loads.

Use Value: 2500 VRMS insulation and UL certification enable safe integration into safety-critical control cabinets.

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac switching applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
BTA12-600SW	TO-220AB insulated through-hole package; identical electrical specs but higher Rth(j-c) = 2.3 °C/W	Requires mechanical mounting and heatsink; better suited for prototyping or low-volume panel-mount designs	Select when board space permits through-hole assembly and thermal path uses bolted heatsink rather than PCB copper
T1235-6G-TR	Same D²PAK package but 35 mA IGT; higher gate drive requirement and lower dV/dt immunity (100 V/µs)	Less sensitive gate demands buffered drive; suitable where noise immunity outweighs drive simplicity	Choose when operating environment has high EMI and gate drive circuitry can support higher current pulses

Compared with BTA12-600SW and T1235-6G-TR, T1210-6G-TR uniquely balances surface-mount scalability, logic-level drive convenience, and high-noise immunity-making it optimal for high-volume, space-constrained LED and appliance control boards.

Availability

T1210-6G-TR is available at Aetrix Electronics and suitable for LED dimmer design, induction motor control, and static relay replacement requiring stable component supply across automotive-grade temperature range (-40 to +125 °C) and long-lifecycle production.

Supply support for T1210-6G-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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.

The T12xx series belongs to ST's Snubberless™ triac product line, engineered specifically for reliable, snubber-free AC switching in energy-efficient lighting, white goods, and industrial controls where gate drive simplicity and inductive load robustness are critical.

FAQ

What is the maximum junction temperature for continuous operation?

The T1210-6G-TR has an operating junction temperature range of –40 °C to +125 °C. Continuous operation at 125 °C requires thermal design ensuring Rth(j-c) ≤ 1.4 °C/W and case temperature ≤ 90 °C, verified via PCB copper area and heatsinking per Figure 12 in DS2115.

Does this part require a heatsink in typical 12 A applications?

Yes - at 12 A RMS, power dissipation exceeds 10 W. With Rth(j-c) = 1.4 °C/W, even a modest 10 °C rise above ambient requires ≥2 cm² of 35 µm copper under the tab (per Figure 12). For sustained full-load operation, a dedicated heatsink or thermal via array is recommended.

Can T1210-6G-TR replace BTA12-600SW in existing designs?

Electrically yes - identical IGT, VDRM, IT(RMS), and Snubberless™ behavior - but mechanically no: D²PAK footprint differs from TO-220AB insulated. Layout redesign is required; however, thermal performance improves due to lower Rth(j-c) and elimination of mechanical mounting hardware.

Is the insulated tab rated for functional or safety isolation?

The 2500 VRMS isolation rating is certified for safety isolation per UL1557 (file E81734), qualifying it for reinforced insulation in Class I appliances. It is not intended for functional signal isolation; the tab must be connected to earth ground or chassis potential in compliance with IEC 61000-4-5 and IEC 60335-1.

T1210-6G-TR Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Snubberless™

Package/Case:: TO-263-3, D2PAK (2 Leads + Tab), TO-263AB

Packaging:: Tape & Reel (TR)

Product Status:: Active

Triac Type:: Alternistor - Snubberless

Voltage - Off State:: 600 V

Current - On State (It (RMS)) (Max):: 12 A

Voltage - Gate Trigger (Vgt) (Max):: 1.3 V

Current - Non Rep. Surge 50, 60Hz (Itsm):: 120A, 126A

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:: D2PAK

T1210-6G-TR FAQ

1.How can I place an order for T1210-6G-TR through Aetrix?

Please submit a Request for Quotation (RFQ) for T1210-6G-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 T1210-6G-TR reliable?

The price and inventory of T1210-6G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1210-6G-TR is usually 5 days.

3.What payment methods are accepted for T1210-6G-TR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1210-6G-TR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for T1210-6G-TR?

T1210-6G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your T1210-6G-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 T1210-6G-TR?

For technical support, including T1210-6G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1210-6G-TR requirements.

6.How does Aetrix verify that T1210-6G-TR is sourced from the original manufacturer or authorized distributors?

All T1210-6G-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 T1210-6G-TR meets industry standards.

7.What is the process for return or replacement of T1210-6G-TR?

All T1210-6G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1210-6G-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 T1210-6G-TR part is unused and in its original packaging.

Return procedure for T1210-6G-TR:

1.Submit a request within 90 days.

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

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