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Home > Products > Discrete Semiconductor Products > Thyristors > TRIACs

STMicroelectronics T1210-6G

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

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Part No.:: T1210-6G

Manufacturer:: STMicroelectronics

Category:: TRIACs

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

Datasheet:: T1210-6G.pdf

Description:: TRIAC ALTERNISTOR 600V 12A D2PAK

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Inventory:1,380

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Product details

Overview

T1210-6G from STMicroelectronics is a 12 A, 600 V Snubberless™ logic-level triac in D²PAK package, designed for AC mains switching in inductive load applications. It features 10 mA gate trigger current (IGT), 2500 VRMS insulated tab, and high commutation capability in 3-quadrant operation. Used in LED lamp dimmers and appliance motor speed controllers where snubber-free operation and low holding current are critical.

For engineers reviewing the T1210-6G datasheet, T1210-6G pinout, T1210-6G application, or T1210-6G equivalent, this part is selected for phase-control AC switching with high dV/dt immunity (1000 V/µs), low thermal resistance (1.4 °C/W j-c), and UL1557-certified insulation - key parameters for reliable solid-state relay and lighting control designs.

Technical Context

The T1210-6G is a 3-quadrant Snubberless™ triac optimized for inductive loads, eliminating external snubber networks. Its internal ceramic insulation enables 2500 VRMS isolation between tab and die, meeting UL1557 (file E81734). Gate sensitivity is rated at 10 mA max IGT with 1.3 V max VGT, enabling direct drive from microcontrollers without buffer stages.

It operates across -40 to +125 °C junction temperature, supports 120 A non-repetitive surge current (50 Hz), and delivers 6.5 A/ms minimum critical rate of decrease of on-state current (dl/dt)c at 0.1 V/µs dV/dt - confirming robust commutation under reactive load turn-off conditions.

Key Specifications

Parameter	Value and Actual Design Meaning
IT(RMS)	12 A - Sustains continuous AC mains current up to 12 A RMS at Tc = 105 °C in D²PAK package.
VDRM / VRRM	600 V - Blocks 600 V peak off-state voltage, suitable for 230 VAC mains with safety margin.
IGT (max)	10 mA - Low gate trigger current enables direct MCU GPIO driving without amplification.
dV/dt (min)	1000 V/µs - High noise immunity prevents false triggering in noisy inductive environments.
Rth(j-c)	1.4 °C/W - Enables efficient heat transfer to heatsink; allows >10 W power dissipation at ΔT = 14 °C.
VTM (max)	1.55 V - Low on-state voltage reduces conduction losses and self-heating at full load.
Insulation Rating	2500 VRMS - UL1557-certified isolation allows safe mounting to grounded heatsinks in Class I appliances.

Pinout & Package

D²PAK (TO-263) surface-mount package with insulated tab; 3-terminal configuration: Anode 1 (A1), Anode 2 (A2), Gate (G). Tab is electrically connected to A2 and rated for 2500 VRMS isolation from die.

Pin/Terminal	Circuit Role	Design Meaning
A1	Main terminal 1 (cathode-side reference)	Current return path; referenced to gate for triggering in quadrants I, II, III.
A2	Main terminal 2 (anode-side reference, connected to tab)	High-side AC line connection; tab is isolated but electrically tied to A2 for thermal conduction.
G	Gate control input	Triggers conduction when ≥10 mA pulse applied relative to A1; logic-level compatible.

Key Features

Feature	Design Value
Snubberless™ operation	Eliminates external RC snubber components in inductive loads (e.g., motors, transformers), reducing BOM count and PCB area.
UL1557-certified insulation	2500 VRMS isolation enables safe mounting to chassis-grounded heatsinks without additional insulation hardware.
Logic-level gate drive	10 mA IGT max allows direct interface with 3.3 V/5 V MCUs - no gate driver IC required for most dimmer/motor control designs.
High commutation (3Q)	6.5 A/ms (dl/dt)c at low dV/dt ensures reliable turn-off under reactive load conditions without oscillation or re-triggering.
RoHS-compliant ECOPACK2®	Lead-free terminations and halogen-free molding compound meet EU Directive 2011/65/EU and UL94 V0 flammability standard.

Applications

LED Lamp Dimmer

Induction Motor Starter

Use Scenario: Phase-cut dimming of mains-powered LED drivers with trailing-edge control.

IC Role / Device Role / Timing Role: Main AC switching element performing zero-crossing synchronized phase-angle control.

Use Value: 10 mA IGT and 1000 V/µs dV/dt prevent false triggering from LED driver EMI; Snubberless™ design avoids snubber-induced efficiency loss.

Use Scenario: Solid-state replacement for electromechanical contactors in single-phase induction motor start circuits.

IC Role / Device Role / Timing Role: Bidirectional AC switch enabling controlled inrush current and soft-start sequencing.

Use Value: 120 A surge rating handles locked-rotor current; 6.5 A/ms (dl/dt)c ensures clean turn-off during motor back-EMF reversal.

Heating Regulation

Static Relay Module

Use Scenario: Proportional on/off control of resistive heating elements in industrial ovens and HVAC systems.

IC Role / Device Role / Timing Role: Mains-frequency AC power switch modulated via burst-fire or phase-angle control.

Use Value: 12 A RMS rating supports up to 2.76 kW at 230 VAC; 1.4 °C/W Rth(j-c) enables compact heatsink integration.

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

IC Role / Device Role / Timing Role: Galvanically isolated load switch interfacing microcontroller I/O to 230 VAC field devices.

Use Value: 2500 VRMS insulated tab eliminates need for optocoupler + discrete triac layout; simplifies creepage/clearance compliance.

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
BTA12-600SW	TO-220AB insulated package; same 10 mA IGT, 600 V rating, but higher Rth(j-c) = 2.3 °C/W.	Requires larger heatsink due to lower thermal efficiency; better suited for through-hole prototyping or lower-power derated use.	Select when mechanical mounting constraints favor through-hole or when UL certification requires TO-220AB form factor.
T1235-600G	Same D²PAK package, but 35 mA IGT and higher dV/dt = 500 V/µs; not logic-level compatible.	Needs gate driver circuitry; preferred for high-noise industrial motor drives where gate drive strength outweighs MCU compatibility.	Select when system noise immunity is prioritized over microcontroller direct-drive simplicity.

Compared with BTA12-600SW, T1210-6G offers superior thermal performance (1.4 vs. 2.3 °C/W) and surface-mount scalability; versus T1235-600G, it trades higher gate sensitivity for lower dV/dt immunity - making it optimal for space-constrained, logic-driven LED dimmer designs.

Availability

T1210-6G is available at Aetrix Electronics and suitable for LED lamp dimmers, induction motor starters, heating regulation systems, and static relay modules requiring stable component supply and long-term industrial availability.

Supply support for T1210-6G 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, analog, MEMS, and microcontroller technologies for industrial, automotive, and consumer markets.

The T12xx series belongs to ST's Snubberless™ triac product line, engineered specifically for reliable, snubber-free AC power control in inductive and capacitive load applications - targeting cost-sensitive, high-reliability lighting and appliance control systems.

FAQ

What is the maximum junction temperature for continuous operation?

The T1210-6G has an operating junction temperature range of -40 to +125 °C. Continuous operation must maintain Tj ≤ 125 °C, achievable with proper heatsinking - e.g., at IT(RMS) = 12 A and Tc = 105 °C, using the 1.4 °C/W Rth(j-c) value to calculate allowable ambient rise.

Is the tab electrically isolated, and what is its voltage rating?

Yes, the D²PAK tab is electrically isolated from the die via internal ceramic insulation and rated for 2500 VRMS isolation (per UL1557 file E81734). The tab is internally connected to A2, so A2 must be treated as a high-voltage node when mounted to a heatsink.

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

Yes, with layout adaptation: both share identical electrical specs (12 A, 600 V, 10 mA IGT), but T1210-6G uses D²PAK (surface-mount) versus TO-220AB insulated (through-hole). Thermal design must account for lower Rth(j-c) (1.4 vs. 2.3 °C/W), and PCB footprint must match D²PAK dimensions per Figure 14 in DS2115.

Does T1210-6G support 4-quadrant triggering?

No - T1210-6G is a 3-quadrant Snubberless™ triac. It triggers only in quadrants I, II, and III (A2+, A1−; A2−, A1+; A2−, A1−), excluding quadrant IV (A2+, A1+). This improves commutation robustness for inductive loads but excludes certain legacy phase-control topologies requiring full 4Q operation.

T1210-6G Specifications

Product attributes: Attribute value

Manufacturer:: STMicroelectronics

Series:: Snubberless™

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

Packaging:: Tube

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 FAQ

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

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

The price and inventory of T1210-6G 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 is usually 5 days.

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

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

Note: Certain payment methods may incur a processing fee.

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

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

Once your T1210-6G 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?

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

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

All T1210-6G 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 meets industry standards.

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

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

Return procedure for T1210-6G:

1.Submit a request within 90 days.

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

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