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STMicroelectronics TPDV1240RG
- Part No.:
- TPDV1240RG
- Manufacturer:
- STMicroelectronics
- Category:
- TRIACs
- Package:
- TOP-3
- Datasheet:
-
TPDV1240RG.pdf
- Description:
- TRIAC ALTERNISTOR 1.2KV 40A TOP3
- Quantity:
- Payment:
- Shipping:
Inventory:1,325
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Product details
Overview
TPDV1240RG from STMicroelectronics is a 40 A RMS, 1200 V repetitive blocking voltage insulated triac in TOP3 package, designed for high-reliability AC power control of inductive loads. It delivers 590 A non-repetitive surge current (tp = 2.5 ms), supports 142 A/ms commutation at 10 V/μs, and features 500 V/μs noise immunity - enabling robust operation in three-phase motor starters and heating systems.
For engineers reviewing the TPDV1240RG datasheet, TPDV1240RG pinout, TPDV1240RG application, or TPDV1240RG equivalent, this alternistor triac addresses demanding requirements in fan speed control, industrial heater cycling, and transformer primary switching where high dI/dt immunity and galvanic isolation are critical.
Technical Context
This triac uses ST's alternistor technology to enable bidirectional conduction with enhanced commutation robustness - particularly under high dv/dt and high di/dt conditions typical in inductive load switching. Its gate trigger current (200 mA max) and latching current (100 mA typ., Quadrant I/III) are optimized for direct drive from microcontrollers or optocouplers without external amplification.
The device integrates reinforced insulation (2500 Vrms, UL E81734) between main terminals and case, supporting safe isolation in grounded-case mounting configurations. Thermal resistance Rth(j–c) is 0.9 °C/W (AC, 50 Hz), enabling 40 A RMS operation at Tc ≤ 75 °C without forced cooling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| IT(RMS) | 40 A - Sustained AC load current capability at Tc = 75 °C, suitable for continuous motor starter duty |
| VDRM / VRRM | 1200 V - Peak repetitive off-state voltage rating, compatible with 690 VAC three-phase line-to-line systems |
| IGT (max) | 200 mA - Maximum gate trigger current required, enabling direct drive from standard logic-level optocouplers |
| (dI/dt)c | 142 A/ms at 10 V/μs - Critical rate-of-rise immunity for reliable commutation in highly inductive motor windings |
| VGD (min) | 0.2 V at 125 °C - Minimum gate-to-cathode blocking voltage ensures noise immunity against false triggering |
| Rth(j–c) | 0.9 °C/W (AC) - Junction-to-case thermal resistance enables passive heatsinking for 40 A RMS in compact enclosures |
| VTM (max) | 1.8 V at 56 A - On-state voltage drop determines conduction loss (≈101 W at 40 A), critical for thermal design |
Pinout & Package
TPDV1240RG uses the insulated TOP3 package (UL recognized E81734), with creepage/clearance >8 mm and reinforced insulation rated 2500 Vrms for 1 minute between terminals and case. Mounting torque: 1.05 N·m (max 1.2 N·m).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | Main terminal 1 (MT1) | Reference cathode for gate triggering; connected to load neutral or low-side return path |
| A2 | Main terminal 2 (MT2) | High-side AC line connection; carries full load current and withstands full VDRM |
| G | Gate | Control input referenced to A1; triggers conduction in all four quadrants with ≤200 mA pulse |
Key Features
| Feature | Design Value |
|---|---|
| Alternistor structure | Enables high (142 A/ms) commutation capability without snubbers in inductive motor circuits |
| Insulated TOP3 package | 2500 Vrms isolation allows direct chassis-mounting without insulating washers in safety-critical appliances |
| Low VTO (1.02 V) | Reduces on-state power loss at high junction temperature, improving thermal margin in sealed enclosures |
| High dV/dt immunity (500 V/μs) | Prevents false turn-on from line transients in industrial environments with variable-frequency drives nearby |
| ECOPACK® compliance | Lead-free plating and halogen-free molding compound meet RoHS and UL94 V0 flammability requirements |
Applications
| Heating System Control | Three-Phase Motor Starter |
|---|---|
Use Scenario: Phase-angle controlled resistive heating in industrial ovens and HVAC duct heaters. IC Role / Device Role / Timing Role: Alternistor triac switching AC line voltage to heating elements with zero-crossing or phase-control timing. Use Value: 1200 V blocking rating accommodates 690 VAC three-phase supply; 40 A RMS handles up to 27.6 kW per phase at 690 V. |
Use Scenario: Soft-start sequencing for three-phase induction motors driving pumps and compressors. IC Role / Device Role / Timing Role: High-surge-current triac controlling motor winding energization during ramp-up to limit inrush current. Use Value: 590 A non-repetitive surge current (2.5 ms) sustains motor lock-rotor current without failure. |
| Fan Speed Regulation | Transformer Primary Switching |
Use Scenario: Variable-speed control of large axial fans in data center cooling systems. IC Role / Device Role / Timing Role: Triac-based phase-cut dimming of fan motor voltage, synchronized to line frequency. Use Value: 142 A/ms commutation rating prevents commutation failure during rapid speed changes under high inductance. |
Use Scenario: On/off switching of transformer primary windings in industrial power supplies and welding equipment. IC Role / Device Role / Timing Role: Isolated triac interrupting magnetizing current in highly inductive transformer primaries. Use Value: Reinforced 2500 Vrms insulation prevents breakdown across terminals during high-voltage flyback transients. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar alternistor triac applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BTB16-800CW | Lower VDRM (800 V), same IT(RMS) (40 A), non-insulated TO-220AB package | Lacks 2500 Vrms isolation; requires external insulation for chassis mounting | Select when cost sensitivity outweighs isolation requirement and PCB layout permits creepage management |
| Q6040JH4 | Higher IGT (50 mA max), lower (dI/dt)c (100 A/ms), same 1200 V rating, insulated TO-220 package | Reduced commutation margin limits use in high-inductance motor windings with fast current decay | Prefer for resistive or lightly inductive loads where gate drive simplicity (low IGT) is prioritized over surge robustness |
Compared with BTB16-800CW and Q6040JH4, TPDV1240RG uniquely combines 1200 V blocking, 142 A/ms commutation, and certified 2500 Vrms insulation - making it the only option qualified for safety-critical, high-dI/dt three-phase motor control without external snubbers or isolation barriers.
Availability
TPDV1240RG is available at Aetrix Electronics and suitable for heating system control, three-phase motor starters, and industrial fan speed regulation requiring stable component supply and long-term lifecycle support.
Supply support for TPDV1240RG 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.
TPDV1240RG belongs to ST's high-performance alternistor triac product line, engineered specifically for reliable AC power switching in harsh electromagnetic environments with inductive loads.
FAQ
What is the maximum allowable case temperature for continuous 40 A RMS operation?
The datasheet specifies IT(RMS) = 40 A at Tc = 75 °C with 180° conduction angle. Exceeding this case temperature reduces safe current capacity - for example, at Tc = 85 °C, derated IT(RMS) drops to approximately 36 A. Thermal design must ensure heatsink interface maintains Tc ≤ 75 °C under worst-case ambient conditions.
Can TPDV1240RG be triggered directly by a microcontroller GPIO without a driver stage?
No - its maximum gate trigger current is 200 mA, exceeding typical GPIO sink/source capability (usually ≤20 mA). A dedicated gate driver (e.g., MOC302x optocoupler or discrete transistor stage) is required to deliver the necessary 200 mA pulse with <2.5 µs rise time while maintaining noise immunity.
Is the 2500 Vrms insulation rating suitable for reinforced insulation per IEC 60747-5-5?
Yes - UL recognition E81734 confirms compliance with UL 1557 for reinforced insulation at 2500 Vrms for 1 minute. This meets IEC 60747-5-5 requirements for basic and reinforced insulation in functional safety applications up to 690 VAC working voltage.
How does the alternistor structure improve commutation compared to standard triacs?
Alternistor triacs like TPDV1240RG feature modified emitter geometry that increases carrier lifetime in the P-base region, raising the critical commutation current (dI/dt)c to 142 A/ms - more than double that of conventional triacs. This eliminates need for snubber networks in motor and transformer switching, reducing component count and board space.
TPDV1240RG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- STMicroelectronics
- Series:
- -
- Package/Case:
- TOP-3
- Packaging:
- Tube
- Product Status:
- Active
- Triac Type:
- Alternistor - Snubberless
- Voltage - Off State:
- 1.2 kV
- Current - On State (It (RMS)) (Max):
- 40 A
- Voltage - Gate Trigger (Vgt) (Max):
- 1.5 V
- Current - Non Rep. Surge 50, 60Hz (Itsm):
- 350A, 370A
- Current - Gate Trigger (Igt) (Max):
- 200 mA
- Current - Hold (Ih) (Max):
- 50 mA
- Configuration:
- Single
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TOP3
TPDV1240RG FAQ
1.How can I place an order for TPDV1240RG through Aetrix?
Please submit a Request for Quotation (RFQ) for TPDV1240RG 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 TPDV1240RG reliable?
The price and inventory of TPDV1240RG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPDV1240RG is usually 5 days.
3.What payment methods are accepted for TPDV1240RG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPDV1240RG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPDV1240RG?
TPDV1240RG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPDV1240RG 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 TPDV1240RG?
For technical support, including TPDV1240RG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPDV1240RG requirements.
6.How does Aetrix verify that TPDV1240RG is sourced from the original manufacturer or authorized distributors?
All TPDV1240RG 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 TPDV1240RG meets industry standards.
7.What is the process for return or replacement of TPDV1240RG?
All TPDV1240RG units undergo pre-shipment inspection (PSI). If there is an issue with TPDV1240RG, 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 TPDV1240RG part is unused and in its original packaging.
Return procedure for TPDV1240RG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPDV1240RG Tags
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Z0103NN5AA4
STMicroelectronics
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Z0107MNT1G
Littelfuse Inc.
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Z0103MNT1G
Littelfuse Inc.
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T405-800B-TR
STMicroelectronics
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T835-600B-TR
STMicroelectronics
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2N6073BG
Littelfuse Inc.
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2N6075BG
Littelfuse Inc.
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BTA08-600CWRG
STMicroelectronics
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T835H-6G-TR
STMicroelectronics
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BTA16-800BRG
STMicroelectronics
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T1210-800G-TR
STMicroelectronics
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MAC4DHMT4G
Littelfuse Inc.
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