K2000E70AP

Overview

The Littelfuse K2000E70AP is a silicon bilateral voltage triggered switch belonging to the Kxxxzy SIDAC series. It operates in the TO-92 package with Type 70 lead form and features glass-passivated junctions for ruggedness. The device triggers at a breakover voltage (VBO) ranging from 190 V to 215 V, with a repetitive peak off-state voltage (VDRM) of 180 V. It supports an on-state RMS current of 1 A at 50/60 Hz and can handle a peak non-repetitive surge current of 20 A for a single cycle at 60 Hz. The component is designed for AC circuit orientation and includes dynamic holding current specifications.

Feature Summary

• Bilateral switching capability utilizing negative resistance region for low on-state voltage conduction
• Glass-passivated junction construction ensuring reliability in harsh environments
• RoHS compliant manufacturing process

Applications

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

Procurement Notes

Verify the specific ordering suffix against official Littelfuse documentation to confirm packaging configuration. The 'AP' suffix indicates Ammo Pack distribution for the TO-92 variant. Confirm that the required trigger voltage range aligns with the 190 V to 215 V specification before finalizing procurement orders.

Selection Notes

Select this component when a bidirectional trigger switch with a nominal 200 V breakover voltage is required. Ensure the application circuit provides sufficient current to maintain conduction above the holding current threshold. Verify thermal management requirements based on the specified junction temperature limits and power dissipation characteristics.

Part Context

This part belongs to the Kxxxzy Standard Bidirectional SIDACs family manufactured by Littelfuse. The series offers various voltage ratings and package options including DO-15, DO-214, and TO-92. The K2000E70AP specifically utilizes the TO-92 package with Type 70 leads, distinguishing it from surface-mount or axial-leaded variants within the same electrical family.

Replacement Considerations

Compatible substitutes include other K2000 series variants such as K2000G or K2000S if package changes are acceptable. Cross-reference triggering voltage ranges to ensure functional equivalence in the target circuit design.