T2800DG

Overview

The Littelfuse T2800DG is a bidirectional triac designed for high-power switching applications. It features a non-repetitive on-state current rating of 100 A and a rated repetitive off-state voltage (VDRM) of 400 V. The device exhibits an on-state voltage of 2 V and a maximum holding current of 30 mA. Gate triggering requirements include a voltage of 2.5 V and a current of 60 mA. It operates within a temperature range of -40°C to +125°C and utilizes a TO-220-3 through-hole package.

Feature Summary

• Bidirectional thyristor structure for AC power control
• High surge current capability for robust switching
• Sensitive gate interface for direct microprocessor driving

Applications

• Solid-state relays
• Motor speed control circuits
• Lighting dimmer systems

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to confirm pinout configuration and thermal characteristics. Ensure compliance with RoHS and REACH directives as specified in the latest product documentation before finalizing procurement specifications.

Selection Notes

Select this component based on its 400 V blocking voltage and 100 A surge capacity. Confirm that the TO-220-3 package provides adequate thermal dissipation for the intended load. Validate gate trigger parameters against the driving circuit capabilities to ensure reliable turn-on under all operating conditions.

Part Context

This part belongs to the T2800D series of triacs manufactured by Littelfuse. These devices are engineered for general-purpose AC power switching, offering a balance of high current handling and compact packaging suitable for industrial and consumer electronics applications requiring reliable solid-state control.

Replacement Considerations

Consult the official Littelfuse replacement guide for electrically equivalent triacs with matching voltage and current ratings. Verify pin compatibility and thermal performance before substituting.