S802ECSRP

Overview

The Littelfuse S802ECSRP is a silicon-controlled rectifier (SCR) from the SxX8xSx series, designed for low-current switching applications. It features an 800 V rated repetitive off-state voltage and an RMS on-state current of 800 mA. The device utilizes a sensitive gate architecture with a maximum gate trigger current of 50 uA, enabling direct interfacing with microprocessors. Packaged in a TO-92 through-hole configuration, it operates within a temperature range of -40 C to +125 C. Key electrical parameters include a forward voltage of 1.7 V, a holding current maximum of 5 mA, and a non-repetitive peak on-state current of 10 A.

Feature Summary

• Sensitive gate design allows for direct interfacing with microprocessor logic levels using minimal trigger current.
• Glass passivated junction construction ensures durability against environmental stressors.
• Compatible with lead-free reflow soldering processes for modern surface mount and through-hole assembly lines.

Applications

• Strobe light control circuits
• Fluid level sensing systems
• Capacitive-discharge ignition systems

Procurement Notes

Verify the specific ordering suffix to confirm package type and tape/reel specifications. Confirm RoHS compliance status via the manufacturer's datasheet before integration. Ensure the sensitive gate requirements match the driving circuit capabilities. Check for any REACH SVHC declarations relevant to the manufacturing region. Validate that the TO-92 package fits the designated PCB footprint.

Selection Notes

Select this component for applications requiring precise switching with minimal gate drive power. The 800 mA RMS rating suits low-power AC load control tasks. Consider the 800 V blocking capability for standard mains voltage isolation needs. The TO-92 package is appropriate for prototyping or low-volume through-hole designs. Evaluate thermal management requirements based on the 1.7 V forward voltage drop at full load.

Part Context

This SCR belongs to the Teccor SxX8xSx family of discrete thyristors manufactured by Littelfuse. These devices are engineered for efficient switching in low-current electronic controls. The series emphasizes reliability and compatibility with automated assembly processes. It serves as a fundamental building block for solid-state relay and motor control implementations.

Replacement Considerations

Consult official Littelfuse substitution guides for verified equivalents. Cross-reference gate trigger currents to ensure compatible driver interfaces. Verify that alternative packages support the required thermal dissipation characteristics.

FAQ

What is the maximum gate trigger current for the S802ECSRP?

The maximum gate trigger current is specified as 50 uA, classifying it as a sensitive gate device.

Does the S802ECSRP support lead-free soldering?

Yes, the device is compatible with lead-free reflow soldering processes.

What is the operating temperature range?

The component functions reliably between -40 C and +125 C.