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STMicroelectronics T2535-800G-TR
- Part No.:
- T2535-800G-TR
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TO-263-3, D2PAK (2 Leads + Tab), TO-263AB
- Datasheet:
-
T2535-800G-TR.pdf
- Description:
- TRIAC ALTERNISTOR 800V 25A D2PAK
- Quantity:
- Payment:
- Shipping:
Inventory:20,752
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Product details
Overview
T2535-800G-TR from STMicroelectronics is a snubberless 3-quadrant triac in D²PAK package, rated for 25 A RMS on-state current and 800 V repetitive peak off-state voltage, with 35 mA maximum gate trigger current (IGT), designed for phase-control AC switching in lighting dimmers and motor speed controllers.
For engineers reviewing the T2535-800G-TR datasheet, T2535-800G-TR pinout, T2535-800G-TR application, or T2535-800G-TR equivalent, this part supports high-commutation AC loads without external snubbers, offers low thermal resistance (Rth(j–c) = 0.8 °C/W), and meets UL1557 recognition and RoHS/ECOPACK2 compliance.
Technical Context
This triac operates in three quadrants (I, II, III) with snubberless capability, enabling robust turn-on under high dV/dt stress (≥500 V/µs at 125 °C) and high critical rate of rise of on-state current (dl/dt ≥ 50 A/µs). Its gate threshold voltage (VGT ≤ 1.3 V) and holding current (IH ≤ 50 mA) ensure reliable triggering and latching across temperature.
Thermal design is supported by low junction-to-case resistance (0.8 °C/W) and defined thermal impedance curves for pulsed operation. The D²PAK package provides enhanced power dissipation versus TO-220AB variants while maintaining surface-mount compatibility and UL94 V0 flammability compliance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 25 A - Sustains full-sine AC load current up to 25 A at case temperature ≤100 °C without derating. |
| VDRM / VRRM | 800 V - Blocks 800 V repetitive peak off-state voltage in both directions, suitable for 230 VAC mains with safety margin. |
| IGT (max) | 35 mA - Requires ≤35 mA gate drive at 12 V/33 Ω, enabling direct MCU GPIO or low-power driver interface. |
| dV/dt (min) | 500 V/µs - Immune to false triggering from rapid voltage transients up to 500 V/µs at 125 °C junction temperature. |
| Rth(j–c) | 0.8 °C/W - Enables efficient heat transfer to heatsink; 25 A conduction yields ≤20 °C junction-to-case rise at steady state. |
| VTM (max) | 1.55 V - On-state voltage drop ≤1.55 V at 35 A pulse, limiting conduction loss to <55 W peak and reducing thermal burden. |
| IDRM / IRRM | 5 µA @ 25 °C - Leakage current <5 µA at rated blocking voltage, ensuring minimal standby power in off-state. |
Pinout & Package
D²PAK (TO-263) surface-mount package with isolated tab; thermally optimized for PCB copper area mounting (Rth(j–a) = 45 °C/W typical with 2.5 cm² copper); UL94 V0 halogen-free molding compound; ECOPACK2 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 (MT1) | Main Terminal 1 | Reference terminal for gate control; connected to load return or neutral side in phase-control circuits. |
| A2 (MT2) | Main Terminal 2 | High-side AC line connection; carries full load current and defines polarity reference for gate triggering. |
| G | Gate | Control input; triggers conduction when current ≥35 mA flows from G to A1 (quadrants I/III) or A2 (quadrant II). |
Key Features
| Feature | Design Value |
|---|---|
| Snubberless 3-quadrant operation | Eliminates need for external RC snubber networks in most phase-control applications, reducing BOM count and board space. |
| UL1557 recognition | Validated isolation and safety compliance for reinforced insulation in industrial and appliance AC control systems. |
| Low Rth(j–c) = 0.8 °C/W | Enables higher continuous current capability on compact heatsinks or copper-pour PCBs without forced air cooling. |
| High commutation robustness | Guaranteed turn-off at high dI/dt (≥13 A/ms) and high dV/dt (≥500 V/µs), preventing false re-triggering during zero-crossing transitions. |
| ECOPACK2 & RoHS compliance | Lead-free terminations and halogen-free resin meet global environmental regulations and end-product sustainability requirements. |
Applications
| Light Dimming Systems | Induction Motor Starting |
|---|---|
|
Use Scenario: Phase-angle controlled dimming of incandescent/halogen lamps in residential and commercial lighting. IC Role / Device Role / Timing Role: Main AC power switch; triggered at programmable phase angle relative to AC zero-crossing to regulate RMS voltage. Use Value: Delivers smooth, flicker-free dimming without snubber components, supporting compact, cost-effective dimmer PCB designs. |
Use Scenario: Solid-state replacement for mechanical relays in single-phase induction motor start circuits (e.g., compressors, fans). IC Role / Device Role / Timing Role: High-current AC switch enabling timed start winding engagement and disengagement. Use Value: Withstands high inrush currents (250 A surge) and eliminates contact wear, extending system lifetime beyond electromechanical alternatives. |
| Heating Regulation | Static Relay Modules |
|
Use Scenario: Proportional on/off control of resistive heating elements in ovens, water heaters, and industrial process equipment. IC Role / Device Role / Timing Role: Duty-cycled AC power switch operating at line frequency or burst-fire mode to regulate average power. Use Value: Low on-state voltage (≤1.55 V) minimizes self-heating during extended conduction, improving thermal stability in sealed enclosures. |
Use Scenario: Input/output isolation and switching in PLC I/O modules, HVAC controllers, and building automation panels. IC Role / Device Role / Timing Role: Isolated AC output stage providing galvanic separation and high-voltage transient immunity. Use Value: UL1557 recognition and 2.5 kV RMS insulation rating ensure safe operation in safety-critical control environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar snubberless triac applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTA24-800CW | TO-220AB insulated package; identical electrical specs (25 A, 800 V, 35 mA IGT), but higher Rth(j–c) = 1.7 °C/W. | Requires larger heatsink or forced cooling for same RMS current; better suited for through-hole prototyping or lower-density layouts. | Select when mechanical mounting or legacy footprint compatibility outweighs surface-mount density benefits. |
| T2535-600G-TR | Same D²PAK package and snubberless 3Q architecture, but rated for 600 V VDRM/VRRM instead of 800 V. | Limited to 120 VAC or 230 VAC with reduced safety margin; unsuitable for 230 VAC systems requiring >2× RMS voltage derating. | Choose only for cost-sensitive 120 VAC applications where 600 V blocking suffices and thermal performance matches. |
Compared with BTA24-800CW and T2535-600G-TR, the T2535-800G-TR uniquely combines 800 V blocking, D²PAK surface-mount form factor, and 0.8 °C/W thermal resistance-enabling higher power density and safer operation in 230 VAC industrial controls.
Availability
T2535-800G-TR is available at Aetrix Electronics and suitable for light dimming systems, heating regulation, induction motor starting, and static relay modules requiring stable component supply across production lifecycles.
Supply support for T2535-800G-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, power, microcontroller, and sensor solutions for industrial, automotive, and consumer markets.
The T25 series belongs to ST's high-reliability AC power switching portfolio, engineered specifically for snubberless, high-commutation triac operation in demanding mains-powered control applications.
FAQ
What is the maximum junction temperature for continuous operation?
The T2535-800G-TR has an operating junction temperature range of –40 °C to +125 °C. Continuous conduction at 25 A RMS requires case temperature ≤100 °C per absolute maximum ratings; exceeding 125 °C risks irreversible parametric shift or failure.
Is a heatsink required for 25 A RMS operation?
Yes-a heatsink is mandatory. At 25 A RMS, power dissipation exceeds 35 W (based on VTM ≈ 1.4 V). With Rth(j–c) = 0.8 °C/W, even a modest 20 °C ambient rise requires Rth(c–a) ≤ 2.2 °C/W, achievable only with a properly sized extruded or bonded heatsink.
Can this triac replace a standard 4-quadrant device in existing designs?
No-T2535-800G-TR is a 3-quadrant snubberless triac and does not operate reliably in quadrant IV (A2 negative, G positive). It must be used in circuits where gate triggering occurs only in quadrants I, II, or III, such as phase-control dimmers with active zero-crossing detection.
What is the minimum gate drive voltage needed for reliable turn-on?
While VGT is guaranteed ≤1.3 V, reliable triggering at full temperature range (–40 °C to +125 °C) requires ≥12 V gate drive into a 33 Ω load (per test condition), delivering ≥35 mA peak current. Lower voltages risk incomplete turn-on, especially at low temperatures or high dV/dt.
T2535-800G-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:
- 800 V
- Current - On State (It (RMS)) (Max):
- 25 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.3 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 250A, 260A
- Current - Gate Trigger (Igt) (Max):
- 35 mA
- Current - Hold (Ih) (Max):
- 50 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- D2PAK
T2535-800G-TR FAQ
1.How can I place an order for T2535-800G-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for T2535-800G-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 T2535-800G-TR reliable?
The price and inventory of T2535-800G-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for T2535-800G-TR is usually 5 days.
3.What payment methods are accepted for T2535-800G-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for T2535-800G-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for T2535-800G-TR?
T2535-800G-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your T2535-800G-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 T2535-800G-TR?
For technical support, including T2535-800G-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your T2535-800G-TR requirements.
6.How does Aetrix verify that T2535-800G-TR is sourced from the original manufacturer or authorized distributors?
All T2535-800G-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 T2535-800G-TR meets industry standards.
7.What is the process for return or replacement of T2535-800G-TR?
All T2535-800G-TR units undergo pre-shipment inspection (PSI). If there is an issue with T2535-800G-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 T2535-800G-TR part is unused and in its original packaging.
Return procedure for T2535-800G-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
T2535-800G-TR Tags
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