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STMicroelectronics T1235H-6G-TR
- Part No.:
- T1235H-6G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T1235H-6G-TR.pdf
- Description:
- TRIAC ALTERNISTOR 600V 12A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:1,797
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Product details
Overview
T1235H-6G-TR from STMicroelectronics is a 12 A, 600 V Snubberless™ Triac in D2PAK surface-mount package, rated for 150 °C junction temperature operation, with 35 mA max gate trigger current and 1000 V/µs dV/dt immunity at Tj = 150 °C - designed for universal motor control in vacuum cleaners and washing machine drum drives.
For engineers reviewing the T1235H-6G-TR datasheet, T1235H-6G-TR pinout, T1235H-6G-TR application, or T1235H-6G-TR equivalent, this part delivers verified high-temperature commutation performance, low thermal resistance (1.4 °C/W), and snubberless operation in compact D2PAK packaging for space-constrained AC switching designs.
Technical Context
This Triac operates across all three quadrants with guaranteed turn-off commutation up to 150 °C junction temperature, enabled by internal ceramic insulation (2500 Vrms) and clip-bonded construction that reduces Rth(j–c) to 1.4 °C/W. Its 50 A/µs critical dI/dt rating supports robust triggering under fast-rising load currents without external snubbers.
Electrical behavior is characterized by low on-state voltage (VT ≤ 1.5 V at 17 A, 25 °C) and stable threshold parameters (Vt0 ≤ 0.80 V, Rd ≤ 30 mΩ at 150 °C), ensuring predictable conduction and minimal power loss in high-duty-cycle motor drive waveforms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 12 A - Sustains full-sine AC load current without derating up to Tc = 130 °C in D2PAK package |
| VDRM / VRRM | 600 V - Blocks peak mains voltage (e.g., 230 VAC × √2 ≈ 325 V) with 87 % safety margin |
| IGT (max) | 35 mA - Low gate drive requirement compatible with standard microcontroller GPIO or optocoupler outputs |
| dV/dt (min) | 1000 V/µs at Tj = 150 °C - Immune to false triggering from rapid voltage transients in noisy motor environments |
| Rth(j–c) | 1.4 °C/W - Enables direct heatsink mounting with minimal thermal interface resistance for compact thermal design |
| (dI/dt)c (min) | 16 A/ms at Tj = 150 °C - Supports reliable commutation during zero-crossing switching of inductive universal motors |
| IDRM / IRRM | 5 µA at 25 °C, 3.9 mA at 150 °C - Low leakage preserves system efficiency and minimizes standby power loss |
Pinout & Package
D2PAK (TO-263) surface-mount package with isolated tab; thermally optimized for PCB copper area ≥1 cm²; UL certified (E81734), RoHS compliant, ECOPACK® grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main Terminal 1 | Reference terminal for gate trigger; connects to neutral or low-side AC line in phase-control circuits |
| A2 | Main Terminal 2 | High-side AC line connection; carries full load current and defines polarity reference for quadrant operation |
| G | Gate | Control input requiring ≥35 mA pulse to initiate conduction; referenced to A1; triggers in all three quadrants |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless™ operation | Eliminates need for external RC snubber networks in universal motor loads, reducing BOM count and board area |
| 150 °C junction rating | Enables sustained operation in sealed enclosures (e.g., vacuum cleaner housings) without forced cooling |
| Low Rth(j–c) = 1.4 °C/W | Reduces required heatsink size by ~40 % vs. legacy TO-220 Triacs at same power dissipation |
| 2500 Vrms isolation | Internal ceramic pad provides reinforced insulation between die and tab, meeting basic safety requirements |
| High 3-quadrant commutation | Guaranteed turn-off capability in Quadrants I, II, and III ensures reliable phase-angle control across full AC cycle |
Applications
| Vacuum Cleaner Motor Control | Washing Machine Drum Drive |
|---|---|
Use Scenario: Variable-speed universal motor control in portable vacuum cleaners with sealed thermal environment. IC Role / Device Role / Timing Role: Main AC power switch enabling phase-angle dimming for suction-level adjustment. Use Value: Snubberless operation eliminates snubber losses; 150 °C rating avoids thermal shutdown during extended runtime. |
Use Scenario: Bidirectional AC motor control for spin and wash cycles in front-load washing machines. IC Role / Device Role / Timing Role: High-reliability Triac delivering precise half-cycle conduction timing for torque modulation. Use Value: 1000 V/µs dV/dt immunity prevents false triggering from brush noise and load transients. |
| Compact HVAC Blower Modules | Power Tool Speed Regulators |
Use Scenario: Space-constrained blower motor control in residential ductless mini-split indoor units. IC Role / Device Role / Timing Role: Surface-mount AC switch replacing through-hole Triacs to reduce PCB footprint and assembly cost. Use Value: D2PAK package enables direct thermal coupling to metal-core PCB, eliminating discrete heatsinks. |
Use Scenario: Trigger-based speed control in corded power drills and sanders with universal motors. IC Role / Device Role / Timing Role: High-dI/dt-rated Triac handling repetitive surge currents during motor startup and stall conditions. Use Value: 120 A non-repetitive surge rating (50 Hz) withstands locked-rotor events without failure. |
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 |
|---|---|---|---|
| BTB12-600CW | 12 A, 600 V, TO-220 package; 50 mA IGT; Rth(j–c) = 2.0 °C/W; no internal insulation | Requires external heatsink and snubber; not rated for 150 °C continuous operation | Select when cost sensitivity outweighs thermal density and snubber elimination needs |
| T1235H-6T | Same die, TO-220AB through-hole package; identical electrical specs; Rth(j–c) = 1.4 °C/W; no isolation | Suitable for prototyping or legacy through-hole assembly; lacks D2PAK's automated placement compatibility | Select when manual assembly, larger board area, or mechanical mounting constraints favor TO-220 |
Compared with BTB12-600CW and T1235H-6T, the T1235H-6G-TR offers superior thermal performance per unit area, eliminates snubber components, and supports automated SMT production - making it optimal for high-volume, space-limited consumer motor controls.
Availability
T1235H-6G-TR is available at Aetrix Electronics and suitable for vacuum cleaner motor control, washing machine drum drives, and compact HVAC blower modules requiring stable component supply and long-term industrial availability.
Supply support for T1235H-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, power, MCU, and sensor solutions for industrial, automotive, and consumer markets.
The T12xxH series belongs to ST's high-temperature Snubberless™ Triac product line, engineered specifically for reliable, snubber-free AC switching in thermally demanding universal motor applications.
FAQ
What is the maximum recommended case temperature for continuous operation?
The T1235H-6G-TR is rated for continuous operation with case temperature up to 130 °C in D2PAK package, as confirmed by absolute maximum ratings table (IT(RMS) = 12 A at Tc = 130 °C). Exceeding this requires derating per Figure 2 in the datasheet.
Does this Triac require a heatsink in typical vacuum cleaner applications?
A heatsink is strongly recommended: although Rth(j–c) is low (1.4 °C/W), junction temperature must stay ≤150 °C. With 12 A RMS load and typical PCB copper area, thermal simulation shows >100 °C rise - a minimal heatsink or metal-core PCB is necessary for reliability.
Can T1235H-6G-TR replace T1235H-6T in an existing design?
Yes, with layout revision: both share identical die and electrical specs, but T1235H-6G-TR uses D2PAK (surface-mount) versus TO-220AB (through-hole) for T1235H-6T. Pad layout, thermal relief, and assembly process must be updated accordingly.
Is the D2PAK tab electrically isolated from the die?
No - the D2PAK tab (A2) is electrically connected to Main Terminal 2. Isolation is only provided in the T12xxH-6I variant (TO-220AB Insulated), which features internal ceramic insulation rated at 2500 Vrms.
T1235H-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):
- 12 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 120A, 126A
- Current - Gate Trigger (Igt) (Max):
- 35 mA
- Current - Hold (Ih) (Max):
- 35 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
T1235H-6G-TR FAQ
1.How can I place an order for T1235H-6G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T1235H-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 T1235H-6G-TR reliable?
The price and inventory of T1235H-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 T1235H-6G-TR is usually 5 days.
3.What payment methods are accepted for T1235H-6G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T1235H-6G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T1235H-6G-TR?
T1235H-6G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T1235H-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 T1235H-6G-TR?
For technical support, including T1235H-6G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T1235H-6G-TR requirements.
6.How does Aetrix verify that T1235H-6G-TR is sourced from the original manufacturer or authorized distributors?
All T1235H-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 T1235H-6G-TR meets industry standards.
7.What is the process for return or replacement of T1235H-6G-TR?
All T1235H-6G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T1235H-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 T1235H-6G-TR part is unused and in its original packaging.
Return procedure for T1235H-6G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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