S6X8ES

Overview

The Littelfuse S6X8ES is a silicon-controlled rectifier (SCR) from the SxX8xS series, designed for sensitive gate triggering applications. It features a rated repetitive off-state voltage of 600 V and an RMS on-state current capacity of 800 mA. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-92 through-hole package. Key electrical parameters include a maximum gate trigger voltage of 800 mV, a gate trigger current of 200 µA, and a forward voltage drop of 1.7 V. The component exhibits a holding current of up to 5 mA and a non-repetitive peak on-state current of 10 A.

Feature Summary

• Sensitive gate architecture enabling reliable triggering with low gate current requirements
• High thermal stability supporting operation in extreme ambient temperatures
• Robust surge handling capability for transient overcurrent protection

Applications

• AC power control circuits requiring precise phase angle modulation
• Solid-state relay inputs for industrial automation systems
• Lighting dimmer controls and motor speed regulation interfaces

Procurement Notes

Verify the specific suffix designation when ordering, as packaging formats such as Ammo Pack or Tape & Reel may vary by manufacturer lot. Confirm RoHS compliance status directly with the supplier documentation prior to integration. Ensure the procurement channel provides authentic Littelfuse components to guarantee parameter consistency and long-term reliability in critical electronic assemblies.

Selection Notes

Select this component when a compact through-hole SCR with sensitive gate characteristics is required for low-power AC switching. The 600 V rating suits general-purpose mains isolation tasks, while the 800 mA RMS current limits define its suitability for small loads. Evaluate the TO-92 footprint constraints against available PCB real estate and ensure thermal management strategies align with the specified junction temperature limits during continuous conduction.

Part Context

This device belongs to the SxX8xS family of thyristors manufactured by Littelfuse, specializing in compact, high-reliability power control solutions. The series integrates glass-passivated junction technology to enhance parameter stability and longevity under harsh electrical conditions. These components are engineered to meet stringent automotive and industrial standards for consistent performance across diverse environmental operating ranges.

Replacement Considerations

Direct substitutes must match the 600 V blocking voltage, 800 mA RMS current, and TO-92 package outline. Verify that alternative SCRs maintain comparable sensitive gate specifications, specifically the 800 mV trigger voltage and 200 µA trigger current thresholds to ensure circuit compatibility without redesign.