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STMicroelectronics T1210-800G-TR
- Part No.:
- T1210-800G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T1210-800G-TR.pdf
- Description:
- TRIAC SENS GATE 800V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,414
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Product details
Overview
T1210-800G-TR from STMicroelectronics is a Snubberless™ logic-level triac in D²PAK package, rated for 12 A RMS on-state current and 800 V off-state blocking voltage, with 10 mA gate trigger current (IGT) and 2500 VRMS insulated tab compliance per UL 81734 - designed for phase-controlled AC switching in LED dimmers and inductive motor speed controllers.
For engineers reviewing the T1210-800G-TR datasheet, T1210-800G-TR pinout, T1210-800G-TR application, or T1210-800G-TR equivalent, this part delivers verified high commutation performance in 3-quadrant operation, low thermal resistance (1.4 °C/W j-c), and RoHS-compliant surface-mount packaging ideal for space-constrained industrial and appliance control designs.
Technical Context
This triac operates in three quadrants (I, II, III) with logic-level gate sensitivity (IGT ≤ 10 mA at 12 V), enabling direct drive from microcontrollers without external amplification. Its Snubberless™ architecture eliminates need for external snubber networks when switching inductive loads like universal motors or transformer-based ballasts.
Thermal design is supported by low junction-to-case resistance (1.4 °C/W), validated for D²PAK mounting on FR4 PCBs with ≥1 cm² copper area, and features guaranteed dV/dt immunity of 500 V/µs at 125 °C - critical for reliable operation in noisy mains environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - supports continuous AC load switching up to 1.3 kW at 230 VAC |
| VDRM / VRRM | 800 V - provides 2× safety margin over 400 V peak line voltage in 230 VAC systems |
| IGT (max) | 10 mA - enables direct MCU GPIO drive without buffer stage |
| dV/dt (min) | 500 V/µs at Tj = 125 °C - ensures noise-immune turn-on in high-dI/dt inductive circuits |
| Rth(j-c) | 1.4 °C/W - allows 12 A conduction with <17 °C junction rise above case at 105 °C TC |
| VTM (max) | 1.55 V at 17 A - limits conduction loss to <26 W peak, reducing heatsink requirements |
| Insulation rating | 2500 VRMS - meets reinforced insulation requirements for Class I appliances per UL 81734 |
Pinout & Package
D²PAK (TO-263) surface-mount package with isolated tab; thermally optimized for PCB copper area ≥1 cm²; lead-free, halogen-free, ECOPACK2® compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connected to load return path in standard phase-control topology |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; carries full load current and defines polarity reference for gate drive |
| G | Gate | Logic-level control input; triggers conduction when pulsed positive or negative relative to A1 (3Q operation) |
| Tab (isolated) | Thermal & Electrical Isolation Plane | Electrically isolated copper pad rated 2500 VRMS; mounted directly to heatsink or ground plane without insulator |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ 3Q operation | Eliminates external RC snubber components for inductive loads - reduces BOM count and board space |
| UL 81734 certified insulation | 2500 VRMS reinforced isolation enables direct use in Class I mains-connected equipment without additional creepage/clearance measures |
| Logic-level gate (10 mA IGT) | Compatible with 3.3 V/5 V microcontroller outputs - removes need for discrete transistor drivers |
| Low Rth(j-c) = 1.4 °C/W | Enables higher power density: 12 A RMS sustained with compact heatsinking on standard FR4 PCB |
| RoHS & ECOPACK2® compliant | Meets EU 2011/65/EU and halogen-free requirements for global industrial and consumer product certifications |
Applications
| LED Dimmer Module | Universal Motor Speed Controller |
|---|---|
Use Scenario: Phase-cut dimming of mains-powered LED lamps with zero-crossing synchronization. IC Role / Device Role / Timing Role: Main AC switching element in leading-edge dimmer circuit; triggered synchronously with line voltage zero-crossing and phase angle delay. Use Value: 10 mA IGT enables direct MCU timing control; 500 V/µs dV/dt immunity prevents false triggering during rapid line transients. |
Use Scenario: Variable-speed control of brushed AC motors in power tools and kitchen appliances. IC Role / Device Role / Timing Role: Bidirectional AC switch in phase-controlled motor drive; handles both half-cycles with 3Q commutation robustness. Use Value: Snubberless™ operation eliminates snubber losses and component stress during high-dI/dt motor commutation events. |
| Induction Cooktop Power Stage | Industrial Static Relay Replacement |
Use Scenario: Mains-frequency power switching for resonant inverter primary stage in induction heating systems. IC Role / Device Role / Timing Role: High-reliability AC switch replacing electromechanical relays; driven by isolated gate driver with precise phase alignment. Use Value: 12 A RMS rating and 126 A non-repetitive surge support handle inrush currents of LC tank circuits. |
Use Scenario: Solid-state replacement for 10–15 A industrial control relays in PLC I/O modules and HVAC actuators. IC Role / Device Role / Timing Role: Fail-safe ON/OFF AC power switch with galvanic isolation between control and load sides. Use Value: 2500 VRMS insulated tab satisfies IEC 61800-5-1 reinforced insulation requirements without auxiliary isolation barriers. |
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 |
|---|---|---|---|
| BTA12-800SW | TO-220AB insulated package; identical electrical specs (12 A, 800 V, 10 mA IGT); Rth(j-c) = 2.3 °C/W | Requires mechanical mounting hardware and thermal interface; better suited for chassis-mounted heatsinks | Select when through-hole assembly or higher thermal mass heatsinking is preferred over SMT footprint |
| T1235-800G-TR | D²PAK package; same footprint; higher IGT = 35 mA; lower dV/dt = 1000 V/µs (vs. 500 V/µs) | Less sensitive gate requires buffer stage; higher dV/dt tolerance suits noisier EMI environments | Select when system noise immunity is prioritized over MCU drive simplicity |
Compared with BTA12-800SW, T1210-800G-TR offers superior thermal efficiency (1.4 vs. 2.3 °C/W) and SMT manufacturability; versus T1235-800G-TR, it trades higher gate sensitivity for lower dV/dt immunity - favoring microcontroller-direct control in cleaner signal environments.
Availability
T1210-800G-TR is available at Aetrix Electronics and suitable for LED lighting controls, appliance motor drives, induction heating power stages, and industrial static relay replacements requiring stable component supply across production lifecycles.
Supply support for T1210-800G-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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The T12xx series belongs to ST's high-reliability power switching portfolio, engineered specifically for robust, snubber-free AC control in cost-sensitive, space-constrained mains-powered equipment.
FAQ
What is the maximum junction temperature for continuous operation?
The T1210-800G-TR has an operating junction temperature range of –40 °C to +125 °C. For continuous 12 A RMS conduction, thermal design must ensure junction temperature remains ≤125 °C - achievable with D²PAK mounted on ≥1 cm² copper area and case temperature ≤105 °C, per Table 5.
Does this triac require a heat sink in typical applications?
A heatsink is not mandatory but strongly recommended for sustained 12 A RMS loads. With 1.4 °C/W junction-to-case resistance and 1.55 V on-state drop, power dissipation reaches ~18.6 W at full load - requiring thermal path to ambient ≤3.5 °C/W to hold Tj ≤125 °C, typically met using a small extruded or stamped heatsink attached to the isolated tab.
Can T1210-800G-TR replace BTA12-800SW in existing designs?
Yes, with layout adaptation: both share identical electrical ratings (12 A, 800 V, 10 mA IGT) and UL insulation certification, but T1210-800G-TR uses D²PAK surface-mount packaging versus TO-220AB through-hole. PCB redesign is required for footprint and thermal pad; gate drive and snubberless behavior remain functionally identical.
Is the insulated tab electrically connected to any internal terminal?
No - the insulated tab is fully galvanically isolated from A1, A2, and G terminals. It serves solely as a thermal conduction path and is rated for 2500 VRMS isolation per UL 81734 (file E81734). This allows direct mounting to grounded heatsinks without compromising safety isolation.
T1210-800G-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Triac Type:
- Logic - Sensitive Gate
- Voltage - Off State:
- 800 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
T1210-800G-TR FAQ
1.How can I place an order for T1210-800G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T1210-800G-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 T1210-800G-TR reliable?
The price and inventory of T1210-800G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1210-800G-TR is usually 5 days.
3.What payment methods are accepted for T1210-800G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1210-800G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1210-800G-TR?
T1210-800G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1210-800G-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 T1210-800G-TR?
For technical support, including T1210-800G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1210-800G-TR requirements.
6.How does Aetrix verify that T1210-800G-TR is sourced from the original manufacturer or authorized distributors?
All T1210-800G-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 T1210-800G-TR meets industry standards.
7.What is the process for return or replacement of T1210-800G-TR?
All T1210-800G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1210-800G-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 T1210-800G-TR part is unused and in its original packaging.
Return procedure for T1210-800G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T1210-800G-TR Tags
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