EC103D3RP

Scrs Overview

The Littelfuse EC103D3RP is a sensitive gate Silicon Controlled Rectifier (SCR) designed for phase control applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 800 mA, with a maximum non-repetitive peak on-state current of 20 A. The device operates within a junction temperature range of -40°C to +110°C. Key electrical characteristics include a maximum gate trigger voltage of 800 mV and a maximum gate trigger current of 500 µA. It exhibits a maximum on-state voltage of 1.7 V and a holding current of up to 8 mA. The component is housed in a TO-92 through-hole package and supplied in tape-and-reel packaging.

Scrs Feature Summary

• Sensitive gate architecture enables reliable triggering using low microampere currents from sense coils or proximity switches.
• Robust construction supports high surge current handling capabilities for demanding switching environments.
• Designed for efficient phase control in heating and motor speed regulation circuits.

Scrs Applications

• Phase control systems for resistive heating elements
• Motor speed control circuits
• Lighting dimmer applications

Scrs Procurement Notes

Verify the specific suffix 'D3RP' against official Littelfuse documentation to confirm the tape-and-reel packaging configuration and exact gate trigger current limits. Ensure the procurement specification matches the required 400 V rating and TO-92 form factor. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and compliance with RoHS standards before finalizing orders.

Scrs Selection Notes

Select this component when a sensitive gate SCR is required for low-power triggering scenarios involving microprocessor or sensor interfaces. Confirm that the 400 V blocking voltage and 800 mA continuous current ratings exceed the circuit's maximum operational requirements. Verify that the TO-92 package dimensions fit the available board space and that the thermal management strategy accommodates the specified operating temperature range.

Scrs Part Context

The EC103D3RP belongs to the Littelfuse EC103xx series of sensitive gate SCRs. This family provides unidirectional switching capabilities optimized for applications requiring precise control with minimal gate drive power. The series is widely utilized in consumer electronics and industrial controls where compact thyristor solutions are necessary for effective power regulation.

Scrs Replacement Considerations

EC103D1: Offers similar electrical ratings but may differ in packaging format or specific gate sensitivity parameters. EC103D175: Provides comparable performance characteristics; verify if the leaded status or specific test conditions align with design requirements before substitution.