T107D2

Overview

The T107D2 is a silicon-controlled rectifier (SCR) manufactured by Littelfuse Inc. It features a sensitive gate structure designed for reliable triggering with low gate current requirements. The device is rated for a repetitive peak forward blocking voltage of 400V and an on-state average current of 4A. It utilizes a TO-202 (TO-92) through-hole package, suitable for general-purpose power control applications requiring robust performance in compact form factors.

Feature Summary

• Sensitive gate architecture enabling efficient triggering with minimal gate drive current
• Robust thermal management capabilities inherent to the TO-202 leaded package design
• High voltage blocking capability ensuring safe operation in medium-voltage circuits

Applications

• General-purpose AC/DC power control circuits
• Lighting dimmer applications
• Motor speed control systems

Procurement Notes

Verify the specific manufacturer part number against official Littelfuse documentation to confirm availability status. Check for any obsolescence notices or lifecycle changes directly from the manufacturer's official channels before finalizing procurement plans.

Selection Notes

Select this component when a 4A SCR with 400V blocking voltage is required in a TO-202 package. Ensure the application demands a sensitive gate type for low-power trigger sources. Validate thermal dissipation requirements against the package's limitations for continuous operation.

Part Context

This SCR belongs to Littelfuse's standard discrete semiconductor lineup. It serves as a fundamental switching element in power electronics. The TO-202 package provides a balance between current handling capacity and physical footprint for board-mounted designs.

Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Generic replacements may differ in gate sensitivity or thermal characteristics. Verify pinout compatibility and electrical ratings before integrating alternative parts.