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STMicroelectronics T1210T-8G-TR
- Part No.:
- T1210T-8G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T1210T-8G-TR.pdf
- Description:
- TRIAC SENS GATE 800V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,432
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Product details
Overview
T1210T-8G-TR from STMicroelectronics is a logic-level, snubberless triac in D²PAK package rated for 12 A RMS on-state current, 800 V repetitive peak off-state voltage (VDRM/VRRM), and 10 mA gate trigger current (IGT). It operates up to 150 °C junction temperature and supports three-quadrant triggering for AC line switching in resistive loads such as heating elements and incandescent lamps.
For engineers reviewing the T1210T-8G-TR datasheet, T1210T-8G-TR pinout, T1210T-8G-TR application, or T1210T-8G-TR equivalent, key selection criteria include low IGT for direct MCU control, high dV/dt immunity (≥150 V/µs at 150 °C), surge capability (100 A @ 20 ms), thermal robustness (Rth(j-c) = 1.3 °C/W), and RoHS/Halogen-Free Ecopack2 compliance.
Technical Context
This triac is engineered for phase-angle and zero-crossing AC switching in mains-powered systems where EMI suppression and gate drive simplicity are critical. Its three-quadrant operation enables reliable turn-on with low gate current across all polarity combinations of A2 relative to A1, while its snubberless architecture eliminates external RC networks for resistive loads.
The device features high commutation robustness (dl/dt ≥ 100 A/µs at 25 °C) and elevated static dV/dt immunity (≥200 V/µs at 125 °C), enabling stable operation under fast transients and inductive kickback conditions typical in hybrid relay and crowbar protection circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - Sustains full-sine AC load current without derating at Tc = 131 °C |
| VDRM/VRRM | 800 V - Blocks 50/60 Hz AC line voltage up to 800 V peak (Tj ≤ 125 °C) |
| IGT | 10 mA - Directly drivable by standard MCU GPIO without buffer stage |
| dV/dt (min) | 150 V/µs at Tj = 150 °C - Resists false triggering during voltage transients in noisy environments |
| Rth(j-c) | 1.3 °C/W - Enables high-power dissipation with minimal case-to-junction temperature rise |
| ITSM | 100 A @ 20 ms - Handles inrush surges from cold resistive loads (e.g., tungsten filaments) |
| VTM | 1.55 V max @ 16.9 A - Low conduction loss reduces thermal stress in compact SMT layouts |
Pinout & Package
D²PAK (TO-263) surface-mount package with isolated tab (A2), halogen-free UL94 V0 molding compound, and Ecopack2 RoHS/Halogen-Free compliance. Thermal pad requires soldered copper area (SCu = 2 cm²) for optimal Rth(j-a) performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Anode 1 | Main current terminal; referenced ground point for gate trigger circuit |
| A2 | Anode 2 | Main current terminal; electrically isolated tab for heatsinking and high-current return path |
| G | Gate | Low-energy control input; triggers conduction when IGT ≥ 10 mA applied between G and A1 |
Key Features
| Feature | Design Value |
|---|---|
| Three-quadrant triggering | Enables gate control with either polarity of A2 relative to A1 - simplifies driver design vs. four-quadrant triacs |
| Snubberless operation | Eliminates need for external RC snubber on resistive loads - reduces BOM count and PCB area |
| 150 °C max junction temperature | Extends thermal margin in enclosed or high-ambient environments - avoids forced cooling in space-constrained designs |
| High surge capability (VRSM = 900 V) | Withstands non-repetitive overvoltage events (e.g., lightning-induced spikes) without failure |
| Low IGT (10 mA) | Permits direct interface with 3.3 V or 5 V MCUs - no level-shifting or gate driver IC required |
Applications
| Heating Control in Small Appliances | Hybrid AC Relay Replacement |
|---|---|
Use Scenario: Precise power regulation for resistive heating elements in coffee makers, rice cookers, and hair dryers. IC Role / Device Role / Timing Role: Logic-level triac performing phase-angle control synchronized to AC zero-crossing detection. Use Value: Enables smooth thermal ramp-up and energy-efficient duty-cycle modulation without snubber components. | Use Scenario: Solid-state replacement for electromechanical relays in HVAC actuators and industrial controls. IC Role / Device Role / Timing Role: Bidirectional AC switch providing silent, wear-free, and bounce-free load switching. Use Value: Achieves >10⁶ switching cycles with no contact arcing - improves reliability and reduces maintenance. |
| Inrush Current Limiting | Overvoltage Crowbar Protection |
Use Scenario: Controlled soft-start of high-capacitance DC power supplies or transformer primaries. IC Role / Device Role / Timing Role: Triac triggered after delay to limit peak inrush current during initial AC half-cycle. Use Value: Prevents fuse blowing and upstream breaker tripping while maintaining fast system startup. | Use Scenario: Fast-acting overvoltage protection for sensitive downstream electronics in AC mains interfaces. IC Role / Device Role / Timing Role: Triac gated into conduction when overvoltage threshold is exceeded, shorting line to trip upstream breaker. Use Value: Responds within <100 µs to transient overvoltages - protects against sustained surges exceeding 900 V VRSM rating. |
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 |
|---|---|---|---|
| BTA12-800BWRG | Same IT(RMS)/VDRM ratings but 25 mA IGT; requires gate buffer for MCU drive | Higher gate drive requirement limits use in ultra-low-power or 3.3 V-only systems | Select if existing BTA-series footprint compatibility is required and gate buffering is acceptable |
| MAC12A8G | 12 A/800 V triac with 15 mA IGT; lower dV/dt immunity (100 V/µs at 125 °C) | Reduced noise immunity may require snubber in high-EMI environments | Select for cost-sensitive designs where EMI constraints are moderate and thermal margin is less critical |
Compared with BTA12-800BWRG and MAC12A8G, the T1210T-8G-TR offers superior MCU compatibility (10 mA IGT), higher dV/dt immunity (150 V/µs at 150 °C), and snubberless operation - making it optimal for compact, noise-sensitive, and thermally constrained AC control designs.
Availability
T1210T-8G-TR is available at Aetrix Electronics and suitable for heating control in small appliances, hybrid AC relay replacement, and inrush current limiting circuits requiring stable component supply, long-term lifecycle support, and consistent tape-and-reel delivery for automated SMT assembly.
Supply support for T1210T-8G-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 microcontrollers, power devices, sensors, and analog ICs for automotive, industrial, and consumer markets.
The T-series triac product line targets EMI-sensitive AC power control applications, emphasizing snubberless operation, low gate drive, and extended thermal capability for compact, reliable solid-state switching solutions.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The T1210T-8G-TR is rated for continuous operation up to 150 °C junction temperature, verified per absolute maximum ratings in DS13088 Rev 3. Derating begins above Tj = 125 °C for VDRM/VRRM (reduced to 600 V), and thermal resistance data confirms safe operation at Tc = 131 °C for full 12 A RMS current.
Can this triac be used without a snubber circuit?
Yes - the T1210T-8G-TR is a snubberless triac optimized for resistive loads. Its high dV/dt immunity (≥150 V/µs at 150 °C) and three-quadrant triggering eliminate the need for external RC snubbers in applications like heating control and lamp dimming, reducing component count and layout complexity.
Is the D²PAK package lead-free and RoHS compliant?
Yes - the D²PAK package is ECOPACK2 certified, meaning it meets RoHS Directive 2011/65/EU and is halogen-free. The molding compound complies with UL94 V0 flammability standard, and package leads are lead-free with matte tin plating per STMicroelectronics' environmental specifications.
How does the gate trigger behavior vary with temperature?
IGT increases with junction temperature: typical IGT at 150 °C is ~1.8× its value at 25 °C (per Figure 5 in DS13088). However, the 10 mA maximum rating is guaranteed across the full -40 °C to +150 °C range, ensuring reliable MCU-driven triggering even under worst-case thermal conditions.
T1210T-8G-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 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 100A, 105A
- Current - Gate Trigger (Igt) (Max):
- 10 mA
- Current - Hold (Ih) (Max):
- 25 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
T1210T-8G-TR FAQ
1.How can I place an order for T1210T-8G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T1210T-8G-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 T1210T-8G-TR reliable?
The price and inventory of T1210T-8G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1210T-8G-TR is usually 5 days.
3.What payment methods are accepted for T1210T-8G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1210T-8G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1210T-8G-TR?
T1210T-8G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1210T-8G-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 T1210T-8G-TR?
For technical support, including T1210T-8G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1210T-8G-TR requirements.
6.How does Aetrix verify that T1210T-8G-TR is sourced from the original manufacturer or authorized distributors?
All T1210T-8G-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 T1210T-8G-TR meets industry standards.
7.What is the process for return or replacement of T1210T-8G-TR?
All T1210T-8G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1210T-8G-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 T1210T-8G-TR part is unused and in its original packaging.
Return procedure for T1210T-8G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T1210T-8G-TR Tags
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