STMicroelectronics TPDV1025RG

Overview

TPDV1025RG from STMicroelectronics is a 25 A, 1025 V insulated triac in TOP3 package, designed for robust AC power control in three-phase inductive/resistive loads. It delivers 390 A non-repetitive surge current (tp = 2.5 ms), 2 kV/µs noise immunity, and 88 A/ms commutation capability at 10 V/µs - enabling reliable motor starter and heating system switching under high dv/dt stress.

For engineers reviewing the TPDV1025RG datasheet, TPDV1025RG pinout, TPDV1025RG application, or TPDV1025RG equivalent, key selection criteria include verified 1025 V blocking voltage, 150 mA gate trigger current, insulated 2500 V_rms isolation, thermal resistance R_th(j-c) ≤ 1.5 °C/W, and validated 2000 V/µs dV/dt immunity at 125 °C junction temperature.

Technical Context

This alternistor-based triac operates across all four quadrants with symmetrical triggering characteristics (I_GT ≤ 150 mA, V_GT ≤ 1.5 V) and supports full-cycle conduction up to 25 A RMS at T_c = 85 °C. Its high commutation robustness (88 A/ms at 10 V/µs) and 2000 V/µs dV/dt immunity enable stable turn-off in noisy three-phase motor drive and heater control environments.

The device integrates reinforced insulation (2500 V_rms, UL E81734) between main terminals (A1/A2) and case, eliminating need for external isolation barriers in industrial panel-mount applications. Thermal design is supported by low R_th(j-c) (1.1 °C/W AC, 1.5 °C/W DC) and defined mounting torque (1.05 N·m typical).

Key Specifications

Pinout & Package

TPDV1025RG uses the insulated TOP3 package (UL E81734 recognized), with A1, A2, and G terminals isolated from the metal baseplate by reinforced dielectric barrier. Mounting torque: 1.05 N·m (max 1.2 N·m). Dimensions per DS7040 Rev 4: 20.4–21.1 mm length, 15.1–15.5 mm width, 14.35–15.60 mm height.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB24-1200BW and Q6025LH4, TPDV1025RG uniquely combines 1025 V blocking, 25 A rating, 2500 V_rms insulation, and 88 A/ms commutation - making it the only drop-in solution for compact, isolated, three-phase 400 VAC motor and heater control without derating or auxiliary protection.

Availability

TPDV1025RG is available at Aetrix Electronics and suitable for industrial heating systems, motor starters, and induction motor speed control requiring stable component supply and long-term production continuity.

Supply support for TPDV1025RG 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 microcontrollers, power devices, sensors, and analog ICs for industrial, automotive, and consumer markets.

The TPDVxx25 series belongs to ST's high-reliability alternistor triac product line, engineered specifically for ruggedized three-phase AC power control in harsh industrial environments with high electromagnetic interference and thermal cycling.

FAQ

What is the maximum allowable case temperature for continuous 25 A operation?

The datasheet specifies IT(RMS) = 25 A at Tc = 85 °C. Operation above this temperature requires derating per Figure 3 in DS7040 Rev 4. At Tc = 100 °C, maximum sustainable IT(RMS) drops to approximately 20 A due to thermal saturation of the silicon die and packaging limits.

Does TPDV1025RG require a heat sink in a 25 A application?

Yes - with Rth(j-c) ≤ 1.5 °C/W and 63 W conduction loss at full current, a heatsink maintaining Tc ≤ 85 °C is mandatory. Without forced air, a minimum 150 cm² aluminum heatsink (10 mm thick) is required; thermal interface material must be applied per ST's mounting guidelines.

Can TPDV1025RG replace a standard triac in an existing PCB layout?

Only if the footprint matches TOP3 (20.4 × 15.1 mm), mounting hole pattern aligns, and isolation requirements are met. Unlike non-insulated triacs, TPDV1025RG's case is electrically isolated - so ground plane routing and heatsink attachment must avoid shorting A1/A2/G to chassis ground.

What gate drive circuit is recommended for reliable triggering?

ST recommends a 150 mA, 20 µs minimum pulse width gate driver with 500 mA peak capability (e.g., MOC3023 + BTA12-600CW buffer). Gate resistor must limit IGT to ≤150 mA while ensuring tGT ≤ 2.5 µs; RL = 33 Ω is validated per Table 2 for quadrant I–III triggering.