STMicroelectronics T1650H-6T

Overview

T1650H-6T from STMicroelectronics is a 16 A, 600 V snubberless triac in TO-220AB package, designed for high-power AC mains switching in universal motor loads and inrush current limiting. It delivers 50 mA gate trigger current (IGT), supports 150 °C junction operation, and features 1000 V/µs dV/dt immunity at 150 °C - enabling robust commutation in vacuum cleaners and coffee brewers.

For engineers reviewing the T1650H-6T datasheet, T1650H-6T pinout, T1650H-6T application, or T1650H-6T equivalent, key selection criteria include its 16 A RMS rating, 600 V blocking voltage, 50 mA IGT sensitivity, insulated thermal performance, and compatibility with high-temperature motor control PCB layouts.

Technical Context

This triac operates in all three quadrants without external snubbers, leveraging optimized gate structure and low dynamic resistance (23 mΩ at 150 °C) to sustain high commutation margins. Its 100 A/µs critical di/dt and 1500 V/µs dV/dt (at Tj = 150 °C) ensure reliable turn-off under reactive load transients.

The TO-220AB package provides 1.15 °C/W junction-to-case thermal resistance and supports direct heatsink mounting. With 2500 VRMS isolation in insulated variants (not applicable to -6T), the -6T variant prioritizes thermal efficiency over galvanic isolation for cost-sensitive, space-constrained motor drive designs.

Key Specifications

Pinout & Package

TO-220AB package: 3-pin through-hole, non-insulated, tab-connected to MT2 (A2). Mounting hole accepts 0.4–0.6 N·m torque. Tab serves as heatsink interface and electrical connection point.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BTB16-600BWRG, T1650H-6T delivers superior high-temperature reliability and transient immunity; versus T1650H-6I, it trades isolation for improved thermal efficiency and simplified mechanical mounting in non-isolated systems.

Availability

T1650H-6T is available at Aetrix Electronics and suitable for vacuum cleaner motor control, coffee brewer heating element switching, and inverter-based appliance inrush limiting requiring stable component supply and long-term industrial availability.

Supply support for T1650H-6T 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, specializing in power discrete devices, microcontrollers, and analog ICs for industrial, automotive, and consumer markets.

The H-series snubberless triac product line targets high-reliability AC power control in thermally demanding, cost-sensitive home appliances - emphasizing rugged commutation, extended temperature capability, and simplified system design.

FAQ

What is the maximum allowable case temperature for continuous 16 A operation?

The datasheet specifies IT(RMS) = 16 A at TC = 130 °C for TO-220AB packages. Exceeding this case temperature requires derating per Figure 2; at TC = 140 °C, maximum RMS current drops to approximately 14.2 A. Thermal design must maintain case temperature ≤130 °C under worst-case ambient and airflow conditions.

Can T1650H-6T be driven directly by a 3.3 V microcontroller GPIO?

No - the 50 mA maximum IGT requires gate drive capable of sourcing ≥50 mA at ≥12 V (per test condition in Table 2). A 3.3 V GPIO cannot meet this; use a dedicated triac driver IC (e.g., MOC302x optocoupler) or transistor buffer stage to ensure reliable turn-on across all operating temperatures and quadrants.

Is heatsink mounting mandatory for T1650H-6T at full 16 A load?

Yes - with Rth(j-c) = 1.15 °C/W and typical on-state loss of ~1.2 W at 16 A, junction temperature rise exceeds safe limits without heatsinking. At 130 °C case temperature, junction reaches 150 °C; passive copper pour alone is insufficient. A minimum 10 cm² aluminum heatsink is recommended for continuous operation.

Does T1650H-6T require a snubber circuit in universal motor applications?

No - it is explicitly designed as a snubberless triac, validated for 3-quadrant commutation up to 150 °C. Its 1500 V/µs dV/dt and 28 A/ms (dl/dt)c ratings eliminate need for external RC snubbers in properly laid-out motor control PCBs with minimized trace inductance.