S8040RTP

Scrs Overview

The Littelfuse S8040RTP is a Silicon Controlled Rectifier (SCR) from the Teccor Sxx40x series, designed for general-purpose power control applications. It features an 800V repetitive peak off-state voltage and a 40A average on-state current rating. The device utilizes a TO-220-2 package with an isolated mounting tab for efficient thermal management. Key electrical characteristics include a maximum gate trigger voltage of 1.5V and a holding current of 60mA. The component exhibits a low off-state leakage current of 20µA and supports a non-repetitive peak surge current of 520A. It operates within a junction temperature range up to 125°C.

Scrs Feature Summary

• High-voltage blocking capability suitable for demanding AC power switching environments
• Robust thermal design via TO-220-2 package with isolated tab for heatsink attachment
• Low gate drive requirements enabling direct interfacing with standard logic circuits

Scrs Applications

• Solid-state relays and contactors
• Industrial motor speed controls
• Lighting dimmer circuits

Scrs Procurement Notes

Verify the specific suffix 'RTP' against the manufacturer's official datasheet to confirm pinout orientation and packaging style. Ensure the procurement channel provides valid traceability documentation. Confirm RoHS compliance status through the latest product change notification or certification documents provided by Littelfuse before finalizing orders.

Scrs Selection Notes

Select this component when an 800V blocking voltage and 40A continuous current capacity are required in a through-hole configuration. Evaluate the thermal resistance of the TO-220-2 package against the expected heat dissipation in the target application. Consider the 1.5V gate trigger voltage for compatibility with available drive circuitry and ensure adequate snubber networks are implemented to protect against high dv/dt conditions.

Scrs Part Context

The S8040RTP belongs to the Littelfuse Teccor Sxx40x family of thyristors. This series is engineered for reliable performance in industrial and consumer power control systems. The part shares common electrical specifications with other variants in the lineup but differs in physical packaging and terminal configuration to suit specific board layout requirements.

Scrs Replacement Considerations

The S8040NTP is a documented alternative within the same series, offering identical electrical ratings but utilizing a D2PAK surface-mount package. Verify that the PCB footprint and thermal interface methods support the required package type before substituting.