S6X8ESRP

Overview

The S6X8ESRP is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse, belonging to the SxX8xS series. It features an 800 mA RMS on-state current and a 600 V rated repetitive off-state voltage. 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 gate trigger voltage of 800 mV, a gate trigger current of 200 µA, and a maximum holding current of 5 mA. The forward voltage drop is specified at 1.7 V, with a non-repetitive peak on-state current capability of 10 A.

Feature Summary

• Sensitive gate structure enabling reliable triggering with low gate current requirements
• Glass-passivated junction construction for enhanced parameter stability and long-term reliability
• Compact TO-92 leaded package designed for efficient space utilization in through-hole applications

Applications

• AC phase control circuits for lighting dimming and motor speed regulation
• General-purpose switching applications requiring moderate current handling
• Battery charging circuits and power supply control logic

Procurement Notes

Verify the specific suffix 'RP' against official Littelfuse documentation to confirm packaging details, as standard datasheets may list generic variants. Ensure the component matches the required RoHS compliance status and check for any specific agency approvals such as UL or VDE relevant to your target market. Confirm that the TO-92 package dimensions align with your PCB layout constraints before finalizing procurement.

Selection Notes

Select this SCR when a sensitive gate is required to minimize driver circuit complexity and power consumption. The 600 V rating provides sufficient margin for standard AC line applications, while the 800 mA current capacity suits low-power loads. Consider the thermal management requirements associated with the TO-92 package if operating near the upper temperature limits or under continuous high-duty cycles.

Part Context

This component belongs to Littelfuse's Teccor brand family of SCRs, specifically the SxX8xS series designed for general-purpose use. These devices are engineered to offer a balance of performance and cost-effectiveness for consumer electronics and industrial control systems. The series emphasizes robustness through glass passivation, ensuring consistent electrical characteristics over the operational lifetime.

Replacement Considerations

Direct substitutes must match the 600 V / 800 mA specification and TO-92 package. Verify pinout compatibility and gate sensitivity parameters. Consult Littelfuse application notes for cross-reference lists or equivalent parts from other manufacturers that meet the same electrical and mechanical standards.