St MicroElectronics Triac 600V 4A TO-252 DPAK Surface Mount

The St MicroElectronics Triac is a 4-quadrant sensitive gate triac rated at 600V and 4A RMS, designed for general-purpose switching applications that require robust surge current capability. Its design allows direct drive from microcontrollers (MCUs), which simplifies circuit design and integration.

Overview

This triac is suited to controlling inductive and resistive loads in a range of domestic and industrial settings. Its maximum gate trigger voltage of 1.3V supports compatibility with low-voltage logic signals. The device is supplied in a compact TO-252 (DPAK) surface-mount package, offering a space-efficient solution for modern PCB designs.

Key Features

• 4-quadrant sensitive gate
• Peak repetitive off-state voltage of 600V
• On-state RMS current rating of 4A
• Gate trigger current of 5mA
• Maximum gate trigger voltage of 1.3V
• Peak non-repetitive surge current of 35A
• Power dissipation of 500mW
• Maximum operating temperature of 125°C
• Three pins in a surface-mount DPAK package
• Dimensions (L x W x H): 6.6 mm x 6.1 mm x 2.3 mm
• Weight: 0.435 g

Applications

• Motor control circuits, providing smooth switching for small AC motors
• Small home appliances, such as food processors, coffee makers, or power tools, for controlling heating elements, lights, or motors
• Fan speed controllers, enabling efficient and reliable speed regulation for AC fans

This device suits AC switching designs that need a 600V, 4A triac in a compact surface-mount package with direct microcontroller drive.