Littelfuse EC103D Thyristor Sensitive SCR 400V 200µA TO-92

Littelfuse EC103D Sensitive SCR Thyristor 400V is a sensitive gate thyristor, also known as a silicon-controlled rectifier, designed for precise phase control in a wide range of electronic applications. It acts as a unidirectional switch and is easily triggered with gate current in the microamp range, with a maximum gate trigger current of 200µA.

Overview

The low triggering requirement makes it compatible with control signals from sense coils, proximity switches, and direct microprocessor outputs, which can simplify circuit design. The device features glass-passivated junctions for voltage handling and long-term stability. It is housed in a UL94V-0 flame-rated epoxy body in an industry-standard TO-92 through-hole package.

Key Features

• Sensitive gate thyristor for phase control
• Peak repetitive off-state voltage (Vdrm): 400V
• Maximum gate trigger current (Igt): 200µA
• Average on-state current (It(av)): 510mA
• On-state RMS current (It(rms)): 800mA
• Glass-passivated junctions
• UL94V-0 flame-rated epoxy body
• Copper alloy leads, 100% matte tin-plated
• TO-92 through-hole case

Dimensions and Weight

Width: 3.3, Depth: 1.5, Height: 4.3. Weight: 0.2 gm.

Applications

This thyristor is suited to control and switching tasks across multiple industries. Common uses include phase control for heating elements, motor speed regulation in tools and appliances, and capacitive discharge systems such as strobe lighting and gas engine ignition systems. It is also used for controls in power tools, domestic brown goods, and major white goods appliances.

Choose the Littelfuse EC103D when a sensitive, easily triggered thyristor in a TO-92 package is required for phase control or switching circuits.