T106M1

Overview

The Littelfuse T106M1 is a half-wave unidirectional sensitive gate silicon-controlled rectifier (SCR) housed in a non-isolated TO-202 package. It features a repetitive peak off-state voltage of 600 V and an RMS on-state current rating of 4 A at 25 °C, with an average on-state current capacity of 2.5 A. The device requires a maximum DC gate trigger current of 200 µA for activation. Electrical characteristics include a peak on-state voltage of 2.2 V, a holding current of 8 mA, and a non-repetitive surge current capability of 60 A²s². The component operates within a junction temperature range of -40 °C to +110 °C.

Feature Summary

• Sensitive gate architecture enabling direct interfacing with microprocessors using minimal gate current
• Glass-passivated junction construction providing long-term parameter stability and reliability
• Non-isolated TO-202 leaded package design suitable for through-hole mounting

Applications

• Temperature control circuits
• Light dimming systems
• Speed control applications
• Process control modules
• Warning systems requiring reliable operation

Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm exact electrical tolerances and package variations. Confirm RoHS compliance status and moisture sensitivity level requirements prior to integration into production assemblies. Ensure supply chain sources provide authentic Littelfuse components to maintain specified performance parameters.

Selection Notes

Select this component when a 600 V blocking voltage and 4 A RMS current handling are required in a standard TO-202 form factor. The sensitive gate specification allows for low-power drive signals from logic circuits. Evaluate thermal derating curves for ambient operating conditions exceeding 25 °C to ensure safe junction temperatures during continuous conduction.

Part Context

The T106M1 belongs to the Teccor line of sensitive SCRs manufactured by Littelfuse. This series complements power SCR offerings by providing high-volume consumer electronics solutions. The device utilizes glass passivation technology to protect the PNPN junction from contamination, ensuring durability in demanding electronic control environments.

Replacement Considerations

T106D1 offers identical electrical ratings but with a 400 V blocking voltage. T107M1 provides the same 600 V rating but with higher gate sensitivity at 500 µA. Verify pinout compatibility and thermal resistance values when substituting these variants in existing designs.