EC103D3AP

Scrs Overview

The Littelfuse EC103D3AP is a Silicon Controlled Rectifier (SCR) belonging to the EC103xx series, designed for phase control applications. It features a sensitive gate structure requiring a maximum DC gate trigger current of 12 µA and a gate trigger voltage of 800 mV. The device supports a rated repetitive off-state voltage of 400 V with an RMS on-state current of 800 mA. Packaged in a TO-92 through-hole configuration, it operates within a temperature range of -40°C to +110°C.

Scrs Feature Summary

• Sensitive gate architecture enabling reliable triggering with microampere-level currents from sense coils or proximity switches.
• Robust unidirectional switching capability suitable for heating and motor speed control circuits.

Scrs Applications

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

Scrs Procurement Notes

Verify the specific suffix 'AP' against official Littelfuse documentation to confirm if it denotes a specific tape-and-reel packaging variant or environmental compliance status distinct from standard bulk units. Confirm RoHS and REACH SVHC declarations directly via the manufacturer datasheet before procurement.

Scrs Selection Notes

Select this component when a low-gate-current SCR is required for precise phase control. Ensure the circuit design accommodates the 400 V blocking voltage and 800 mA RMS current rating. Verify that the TO-92 package thermal characteristics meet the system's heat dissipation requirements at the intended operating temperature.

Scrs Part Context

This part belongs to the EC103xx family of sensitive gate SCRs manufactured by Littelfuse. These devices are engineered as cost-effective solutions for general-purpose phase control, offering high reliability in compact packages compared to larger industrial thyristors.

Scrs Replacement Considerations

Cross-reference with EC103D175 for identical electrical ratings in the same series. Check Teccor Electronics equivalents such as the Q103D3 series for potential pin-compatible substitutions if sourcing constraints exist.