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STMicroelectronics T850H-6G-TR
- Part No.:
- T850H-6G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T850H-6G-TR.pdf
- Description:
- TRIAC ALTERNISTOR 600V 8A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:3,962
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Product details
Overview
T850H-6G-TR from STMicroelectronics is a high-temperature, snubberless 8 A, 600 V RMS triac in D²PAK surface-mount package, rated for 150 °C junction operation with 50 mA gate trigger current (IGT), 1500 V/µs critical dV/dt, and 14 A/ms commutation capability-designed for universal motor control in vacuum cleaners and washing machine drum drives.
For engineers reviewing the T850H-6G-TR datasheet, T850H-6G-TR pinout, T850H-6G-TR application, or T850H-6G-TR equivalent, this part supports high-power-density AC switching at elevated junction temperatures, requires thermal design for Rth(j-c) = 1.85 °C/W, and enables heatsink reduction versus conventional triacs in mains-powered motor loads.
Technical Context
This triac operates in all three quadrants without external snubbers, leveraging internal ceramic insulation (2500 VRMS isolation) and clip-bonded construction for low thermal resistance. Its 150 °C maximum junction temperature and 1000–1500 V/µs dV/dt rating enable reliable commutation under high dv/dt transients in inductive motor loads.
The device delivers 8 A RMS on-state current at TC = 133 °C, supports non-repetitive surge currents up to 84 A (60 Hz, 16.7 ms), and maintains stable latching (IL ≤ 60 mA) and holding (IH ≤ 75 mA) across its full -40 to +150 °C operating range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 8 A - Sustained AC load current at TC = 133 °C, enabling compact thermal design in motor drive PCBs |
| VDRM / VRRM | 600 V - Peak repetitive blocking voltage, suitable for 230 VAC mains with safety margin |
| IGT | 50 mA max - Gate trigger current at 12 V, defining minimum driver strength required |
| dV/dt (Tj = 150 °C) | 1500 V/µs min - Immunity to false turn-on during fast voltage transients in noisy motor environments |
| (dI/dt)c | 14 A/ms min - Commutation robustness without snubber in universal motor commutation cycles |
| Rth(j-c) | 1.85 °C/W - Junction-to-case thermal resistance, enabling direct heatsink mounting via tab |
| Isolation Voltage | 2500 VRMS - Reinforced insulation between main terminals and heatsink, meeting basic safety requirements |
Pinout & Package
D²PAK (TO-263) surface-mount package with isolated copper tab (pin 3), thermally and electrically connected to A2. Standard 3-pin layout optimized for high-current conduction and PCB thermal relief.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main Terminal 1 | Current return path; referenced to A2 in standard triac configuration; connects to load neutral or low-side |
| A2 | Main Terminal 2 | High-current input terminal; electrically and thermally tied to exposed metal tab for heatsinking |
| G | Gate | Control input; triggers conduction in all quadrants; requires ≥50 mA pulse for guaranteed turn-on |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless operation | Eliminates external RC snubber components in universal motor phase-control circuits, reducing BOM count and board space |
| 150 °C junction rating | Enables higher power density by allowing sustained operation at elevated temperatures where conventional triacs derate or fail |
| Low Rth(j-c) = 1.85 °C/W | Reduces thermal interface complexity-direct tab mounting achieves efficient heat transfer without thermal pads or paste in many applications |
| High 3-quadrant commutation | Ensures reliable turn-off during zero-crossing and reverse-polarity conduction in brushed AC motor commutation |
| UL certification (E81734) | Validates safety compliance for end-equipment certification in North American consumer appliances |
Applications
| Vacuum Cleaner Motor Control | Washing Machine Drum Drive |
|---|---|
|
Use Scenario: Phase-angle controlled AC power delivery to universal motors driving suction fans with variable speed demand. IC Role / Device Role / Timing Role: Main power switch regulating RMS voltage applied to motor windings via leading-edge triggering synchronized to AC line zero-crossing. Use Value: Enables precise speed control while maintaining >150 °C junction stability during burst-mode operation, reducing heatsink mass by ~40% vs. legacy triacs. |
Use Scenario: Bidirectional AC power switching for reversible drum rotation in spin/rinse cycles with high inrush and braking currents. IC Role / Device Role / Timing Role: High-current bidirectional switch handling both forward and reverse motor phases without polarity reversal circuitry. Use Value: Supports 84 A non-repetitive surge current during motor startup and dynamic braking, eliminating need for parallel devices or oversized heatsinks. |
| Industrial Fan Speed Regulator | Power Tool Motor Controller |
|
Use Scenario: Duty-cycle modulated AC switching for HVAC blower fans requiring continuous operation at ambient temperatures up to 70 °C. IC Role / Device Role / Timing Role: Mains-isolated power switch interfaced with microcontroller-driven zero-crossing detector and gate driver. Use Value: Maintains 8 A RMS capability at TC = 133 °C, enabling convection-cooled designs without forced airflow in enclosed enclosures. |
Use Scenario: Compact, high-reliability AC switching in corded power tools subject to mechanical shock and thermal cycling. IC Role / Device Role / Timing Role: Snubberless triac directly driven by optocoupler-isolated gate signal for safety-critical motor on/off and speed control. Use Value: 2500 VRMS isolation and UL certification simplify system-level safety certification, reducing time-to-market for Class I portable tools. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triac switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTB16-600CW | 16 A rating, TO-220 package, 50 mA IGT, but only rated to 125 °C Tj and lacks snubberless certification | Requires external snubber in high-dV/dt motor loads; unsuitable for compact 150 °C thermal envelopes | Select when higher current headroom is needed and thermal constraints allow larger heatsink |
| T850H-6T | Same electrical specs, but TO-220AB through-hole package with lower Rth(j-c) = 1.85 °C/W (non-insulated) and no tape-and-reel packaging | Preferred for prototyping or low-volume through-hole assembly; not compatible with automated SMT lines | Select for manual assembly or when D²PAK footprint or reel logistics are incompatible with production line |
Compared with BTB16-600CW and T850H-6T, the T850H-6G-TR uniquely combines SMT manufacturability, 150 °C operation, and certified snubberless performance-making it optimal for high-volume, space-constrained, thermally aggressive motor control designs.
Availability
T850H-6G-TR is available at Aetrix Electronics and suitable for vacuum cleaner motor control, washing machine drum drives, industrial fan regulators, and power tool controllers requiring stable component supply across multi-year production programs.
Supply support for T850H-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, digital, and mixed-signal ICs for automotive, industrial, and consumer markets.
The T850H series belongs to ST's high-temperature snubberless triac product line, engineered specifically for energy-efficient, compact AC motor control in demanding home appliance and power tool applications.
FAQ
What is the maximum allowable case temperature for continuous 8 A RMS operation?
The T850H-6G-TR sustains 8 A RMS current at TC = 133 °C, per Table 2 of the datasheet. Exceeding this temperature requires derating per Figure 2. The device's 150 °C maximum junction temperature allows operation at elevated ambient conditions when heatsink design maintains TC ≤ 133 °C.
Does the D²PAK package provide electrical isolation between the tab and pins?
No-the D²PAK tab is electrically connected to A2 and is not isolated. For insulated mounting, use the TO-220AB Insulated variant (T850H-6I). The D²PAK's 2500 VRMS isolation refers to internal die-to-tab insulation, not pin-to-tab clearance.
Can T850H-6G-TR replace T835H-6G-TR in existing designs?
Yes-both share identical package, voltage, and current ratings, but T850H has higher IGT (50 mA vs. 35 mA) and improved dV/dt (1500 V/µs vs. 1000 V/µs). Gate drive must supply ≥50 mA; otherwise, marginal turn-on may occur. No layout change is needed.
Is UL certification valid for the T850H-6G-TR D²PAK package?
Yes-UL file E81734 covers the entire T835H/T850H family, including D²PAK variants. Certification applies to the device itself, not the package form factor alone; end-equipment still requires full system-level UL review.
T850H-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):
- 8 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 80A, 84A
- Current - Gate Trigger (Igt) (Max):
- 50 mA
- Current - Hold (Ih) (Max):
- 75 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
T850H-6G-TR FAQ
1.How can I place an order for T850H-6G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T850H-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 T850H-6G-TR reliable?
The price and inventory of T850H-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 T850H-6G-TR is usually 5 days.
3.What payment methods are accepted for T850H-6G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T850H-6G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T850H-6G-TR?
T850H-6G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T850H-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 T850H-6G-TR?
For technical support, including T850H-6G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T850H-6G-TR requirements.
6.How does Aetrix verify that T850H-6G-TR is sourced from the original manufacturer or authorized distributors?
All T850H-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 T850H-6G-TR meets industry standards.
7.What is the process for return or replacement of T850H-6G-TR?
All T850H-6G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T850H-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 T850H-6G-TR part is unused and in its original packaging.
Return procedure for T850H-6G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T850H-6G-TR Tags
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