K1200SRP

Overview

The K1200SRP is a silicon bilateral voltage-triggered switch (SIDAC) manufactured by Littelfuse Inc. It operates as a bidirectional trigger device, switching on when the applied voltage exceeds its breakover threshold and maintaining conduction until current drops below the holding level. The component features glass-passivated junctions for ruggedness in harsh environments. It is designed for AC circuit applications with a triggering voltage range of 79V to 330V across the series. The device utilizes a DO-214AA surface-mount package, ensuring compliance with RoHS standards for environmental safety.

Feature Summary

• Silicon bilateral voltage-triggered switch functionality
• Glass-passivated junctions for environmental durability
• RoHS compliant construction

Applications

• High-voltage power supplies
• Natural gas igniters
• High-pressure sodium lamps
• Xenon flash ignition systems

Procurement Notes

Verify the specific part number suffix against manufacturer documentation to confirm exact electrical characteristics and packaging details. Ensure the procurement source provides official Littelfuse certification to guarantee authenticity. Cross-reference the datasheet revision date to ensure compatibility with current design specifications and regulatory requirements.

Selection Notes

Select this component based on the required breakover voltage within the 79V to 330V range. Consider the surface-mount DO-214AA package for PCB space constraints. Evaluate the thermal management requirements relative to the on-state current capabilities. Confirm that the glass-passivated construction meets the environmental exposure conditions of the target application.

Part Context

The K1200SRP belongs to the Kxxxzy series of standard bidirectional SIDACs from Littelfuse. This series includes various variants differentiated by their specific breakover voltage ratings and package options. These devices are engineered for reliable triggering in high-voltage AC circuits, serving as robust alternatives to traditional diacs in industrial and consumer electronics.

Replacement Considerations

Compatible substitutes include other SIDACs from the same family, such as K1200GRP or K1200GURP, provided they match the required breakover voltage and package type. Verify equivalent electrical parameters before substitution.