STMicroelectronics TPDV640RG

Overview

TPDV640RG from STMicroelectronics is a 40 A RMS insulated triac in TOP3 package, rated for 600 V repetitive peak off-state voltage (VDRM/VRRM), with 200 mA gate trigger current (IGT) and 500 V/μs noise immunity-designed for robust AC power control in three-phase motor starters and heating systems.

For engineers reviewing the TPDV640RG datasheet, TPDV640RG pinout, TPDV640RG application, or TPDV640RG equivalent, this device delivers high commutation capability (142 A/ms at 10 V/μs), low on-state voltage (1.8 V max at 56 A), and UL-recognized 2500 V_rms insulation-critical for reliable switching of inductive loads in industrial AC mains environments.

Technical Context

This alternistor-based triac supports full-wave AC conduction across all four quadrants (I–III), with latching current (IL) of 100 mA (Quadrant I/III) and holding current (IH) of 50 mA, enabling stable turn-on under noisy grid conditions. Its dV/dt immunity (500 V/μs at 125 °C) and critical rate of rise of on-state current (dl/dt = 20 A/μs) ensure reliable operation without false triggering in transformer-coupled or long-cable drive circuits.

The device features a low dynamic resistance (12 mΩ at 125 °C) and thermal resistance R_th(j–c) of 0.9 °C/W (AC, 50 Hz), allowing sustained 40 A RMS conduction at case temperatures up to 75 °C-validated by SOA curves covering sinusoidal surges up to 590 A (2.5 ms).

Key Specifications

Pinout & Package

TPDV640RG uses the insulated TOP3 package (UL E81734 certified), with creepage/clearance optimized for reinforced insulation in 300–600 V AC systems. The package features screw-mount terminals (M4) and a metal baseplate for thermal and electrical isolation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar triac-based AC power control applications.

Compared with BTB16-600CW and Q6016LH4, TPDV640RG uniquely combines 40 A RMS rating, 600 V blocking, 142 A/ms commutation, and UL-recognized insulation-making it the only option qualified for high-reliability, three-phase inductive load control without external snubbers or isolation barriers.

Availability

TPDV640RG is available at Aetrix Electronics and suitable for heating system control, motor starter design, and induction motor speed control requiring stable component supply, long-term industrial lifecycle support, and UL-recognized safety certification.

Supply support for TPDV640RG 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, and microcontroller solutions for industrial, automotive, and consumer markets.

TPDV640RG belongs to the TPDVxx40 alternistor triac product line, engineered specifically for high-reliability AC power control in three-phase inductive applications-including motor drives, heating systems, and industrial automation-where commutation robustness and reinforced insulation are mandatory.

FAQ

What is the maximum 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 temperature requires derating per Figure 3; at 85 °C case, maximum sustainable RMS current drops to ~35 A. Thermal design must maintain Tc ≤ 75 °C using the specified R_th(j–c) = 0.9 °C/W.

Is TPDV640RG compatible with zero-crossing trigger circuits?

Yes-its gate trigger sensitivity (IGT ≤ 200 mA) and quadrants I/II/III operation support both phase-angle and zero-crossing control. However, zero-crossing operation fully leverages its high dV/dt immunity (500 V/μs) and reduces EMI, making it ideal for noise-sensitive environments like HVAC control panels.

Does the 2500 V_rms insulation rating apply to all terminals simultaneously?

Yes-the UL E81734 recognition certifies 2500 V_rms withstand voltage for 1 minute between A1/A2/Gate collectively and the metal case (baseplate). This is a reinforced insulation rating, not basic isolation, and covers simultaneous stress across all main terminals relative to chassis ground.

Can TPDV640RG replace TPDV840RG or TPDV1240RG in a 400 V three-phase system?

No-TPDV640RG is rated for 600 V VDRM/VRRM, sufficient for 400 V 3φ mains (line-to-line peak ≈ 566 V), but TPDV840RG (800 V) and TPDV1240RG (1200 V) are intended for higher-voltage grids (e.g., 690 V industrial systems) or applications requiring greater transient margin. Substitution requires validation of worst-case overvoltage exposure.