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STMicroelectronics T1205-600G-TR
- Part No.:
- T1205-600G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T1205-600G-TR.pdf
- Description:
- TRIAC ALTERNISTOR 600V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,957
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Product details
Overview
T1205-600G-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 5 mA maximum gate trigger current (IGT) and insulated tab rated at 2500 VRMS - designed for reliable AC phase control in LED lamp dimmers and inductive appliance motor controllers.
For engineers reviewing the T1205-600G-TR datasheet, T1205-600G-TR pinout, T1205-600G-TR application, or T1205-600G-TR equivalent, key selection criteria include commutation robustness on inductive loads, low IGT for microcontroller-compatible triggering, thermal resistance (Rth(j-c) = 1.4 °C/W), UL1557 certification, and tape-and-reel packaging for automated assembly.
Technical Context
This triac operates in three quadrants (I, II, III) and features high commutation capability without external snubbers, enabled by internal ceramic insulation and optimized gate structure. Its 5 mA IGT and 1.3 V VGT ensure compatibility with standard logic-level drivers, while dV/dt immunity of 500 V/µs (min) and (dl/dt)c ≥ 6.5 A/ms support stable switching on reactive loads.
The device uses a clip-bonded die and insulated copper tab to achieve low thermal resistance (1.4 °C/W junction-to-case) and 2500 VRMS isolation - meeting UL1557 (file E81734) and RoHS 2011/65/EU requirements. It is not rated for four-quadrant operation and excludes quadrant IV triggering.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - supports continuous mains-powered loads up to 1.4 kW at 120 VAC or 2.6 kW at 230 VAC |
| VDRM / VRRM | 600 V - withstands peak line voltages up to 230 VAC + margin, suitable for global mains (100–240 VAC) |
| IGT (max) | 5 mA - enables direct drive from MCU GPIO or low-power optocouplers without buffer stages |
| dV/dt (min) | 500 V/µs - suppresses false triggering during fast transients on inductive loads like motors or transformers |
| Rth(j-c) | 1.4 °C/W - allows >10 W power dissipation with ≤14 °C rise above heatsink temperature |
| Isolation Voltage | 2500 VRMS - meets reinforced insulation requirements for Class I appliances per IEC 60335 |
| UL Certification | UL1557 file E81734 - validated for safety-compliant AC switching in end equipment |
Pinout & Package
D²PAK (TO-263) surface-mount package with insulated copper tab; thermally enhanced layout for PCB heat spreading via large copper pour under tab; RoHS-compliant, halogen-free molding compound (UL V0).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate triggering; connected to load return path in phase-control circuits |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; carries full load current and defines polarity reference for gate |
| G | Gate | Low-current control input; triggers conduction when referenced to A1; 5 mA max IGT enables logic-level drive |
| Tab (isolated) | Thermal & Electrical Isolation Plane | Electrically isolated copper pad rated 2500 VRMS; mounted to heatsink without insulator; improves thermal transfer |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ operation | Eliminates need for RC snubber networks on inductive loads, reducing BOM count and board space |
| Logic-level gate sensitivity | 5 mA IGT ensures compatibility with 3.3 V/5 V MCUs and standard optocouplers (e.g., MOC3021) |
| UL1557-certified insulation | 2500 VRMS isolated tab meets safety standards for double/reinforced insulation in consumer appliances |
| Low Rth(j-c) | 1.4 °C/W enables compact thermal design with minimal heatsink area for 12 A RMS loads |
| High commutation (3Q) | Guaranteed turn-off under inductive load conditions without false re-triggering, critical for motor control |
Applications
| LED Lamp Dimmer | Induction Motor Starter |
|---|---|
Use Scenario: Phase-cut dimming of mains-powered LED retrofit lamps using microcontroller-based zero-cross detection and pulse timing. IC Role / Device Role / Timing Role: Main AC switching element; triggered at precise phase angle to regulate RMS voltage delivered to LED driver. Use Value: 5 mA IGT allows direct MCU GPIO drive; 500 V/µs dV/dt prevents false triggering from LED driver EMI; Snubberless™ operation avoids snubber losses and component stress. | Use Scenario: Soft-start and ON/OFF control of single-phase induction motors in washing machines or HVAC blowers. IC Role / Device Role / Timing Role: High-current AC switch replacing mechanical relays; handles locked-rotor surge and inductive flyback energy. Use Value: 120 A non-repetitive surge rating absorbs motor startup currents; 6.5 A/ms (dl/dt)c ensures clean commutation during zero-cross turn-off; insulated tab simplifies heatsink isolation. |
| Heating Element Regulator | Static Relay Replacement |
Use Scenario: Duty-cycle or phase-angle control of resistive heating elements in ovens, coffee makers, or soldering stations. IC Role / Device Role / Timing Role: Solid-state replacement for electromechanical contactors; switches 12 A RMS continuously at elevated ambient temperatures. Use Value: 125 °C max junction temperature and 1.4 °C/W Rth(j-c) sustain stable operation without derating at 70 °C ambient; TO-220AB-insulated alternative unavailable in D²PAK form factor. | Use Scenario: Fail-safe AC output stage in programmable logic controller (PLC) digital output modules. IC Role / Device Role / Timing Role: Isolated, high-reliability AC switching node; driven by optocoupled logic with galvanic separation. Use Value: 2500 VRMS tab isolation eliminates need for additional isolation barriers; UL1557 certification satisfies industrial safety compliance (IEC 61000-4-x, UL 61010); tape-and-reel packaging supports SMT automation. |
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 |
|---|---|---|---|
| BTA12-600TW | TO-220AB insulated package; same 12 A / 600 V / 5 mA specs; Rth(j-c) = 2.3 °C/W | Requires mechanical mounting and insulating washer; better suited for through-hole prototyping or low-volume assemblies | Select when manual assembly, heatsink clamping, or legacy footprint compatibility is required |
| T1210-600G-TR | D²PAK package; 10 mA IGT (vs. 5 mA); identical voltage/current ratings and isolation | Higher gate drive requirement reduces noise immunity margin but improves robustness against leakage-induced false trigger | Select when system noise environment justifies trade-off between gate sensitivity and trigger reliability |
Compared with BTA12-600TW, T1205-600G-TR offers superior thermal performance (1.4 vs. 2.3 °C/W) and SMT scalability; versus T1210-600G-TR, it provides tighter gate threshold control for low-power MCU interfaces at the cost of slightly reduced noise margin.
Availability
T1205-600G-TR is available at Aetrix Electronics and suitable for LED lighting controls, appliance motor drives, heating regulation systems, and industrial static relay modules requiring stable component supply across production lifecycles.
Supply support for T1205-600G-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, microcontroller, power, and sensor solutions for automotive, industrial, and consumer markets.
The T12xx series belongs to ST's high-reliability AC power switching product line, engineered specifically for snubberless, logic-compatible triac operation in safety-critical mains-connected applications such as white goods and lighting.
FAQ
What is the maximum allowable junction temperature for continuous operation?
The T1205-600G-TR has a specified operating junction temperature range of –40 °C to +125 °C. Continuous operation at 125 °C requires maintaining case temperature ≤110 °C given its 1.4 °C/W thermal resistance - achievable with ≥25 cm² copper pour and forced airflow or moderate heatsinking. Derating applies above 105 °C case temperature per Figure 2 in DS2115.
Does this triac support four-quadrant triggering?
No. The T1205-600G-TR is a three-quadrant (3Q) Snubberless™ triac, rated only for triggering in quadrants I, II, and III. Quadrant IV triggering is not characterized or guaranteed; attempting it may result in unreliable turn-on or accelerated degradation. Use standard four-quadrant parts like BTB12-600B only if QIV operation is required.
Can the insulated tab be directly mounted to a grounded metal chassis?
Yes - the tab is electrically isolated at 2500 VRMS and certified to UL1557 (file E81734). It may be bolted directly to a grounded heatsink or chassis without additional insulating hardware, provided mechanical torque does not exceed 0.70 N·m and mounting surface is flat and clean. This simplifies thermal design and reduces assembly steps.
Is tape-and-reel packaging compatible with standard pick-and-place equipment?
Yes. The T1205-600G-TR is supplied in 13-inch tape-and-reel format (1000 units per reel) with EIA-481-D compliant carrier tape, 12 mm pocket pitch, and cover tape peel strength matching IPC-7351B requirements. Feeder compatibility is confirmed for Yamaha YSM20, Fuji NXT III, and Siemens SIPLACE DX machines per ST's packaging specification document AN4905.
T1205-600G-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):
- 5 mA
- Current - Hold (Ih) (Max):
- 10 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
T1205-600G-TR FAQ
1.How can I place an order for T1205-600G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T1205-600G-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 T1205-600G-TR reliable?
The price and inventory of T1205-600G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T1205-600G-TR is usually 5 days.
3.What payment methods are accepted for T1205-600G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1205-600G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1205-600G-TR?
T1205-600G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1205-600G-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 T1205-600G-TR?
For technical support, including T1205-600G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1205-600G-TR requirements.
6.How does Aetrix verify that T1205-600G-TR is sourced from the original manufacturer or authorized distributors?
All T1205-600G-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 T1205-600G-TR meets industry standards.
7.What is the process for return or replacement of T1205-600G-TR?
All T1205-600G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1205-600G-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 T1205-600G-TR part is unused and in its original packaging.
Return procedure for T1205-600G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T1205-600G-TR Tags
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