K1100S

Overview

The Littelfuse K1100S is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, designed for AC circuit protection. It features a breakover voltage range of 104 V to 118 V and a repetitive peak off-state voltage of 90 V. The device supports an on-state RMS current of 1 A at 50/60 Hz with a junction temperature below 125°C. It operates within a junction temperature range of -40°C to 125°C and can be stored between -40°C and 150°C. Packaged in the DO-214AA surface-mount format, it utilizes glass-passivated junctions for ruggedness.

Feature Summary

• Bilateral switching capability for AC circuits
• Glass-passivated junction construction
• Low on-state voltage drop

Applications

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

Procurement Notes

Verify the specific package suffix 'S' corresponds to the DO-214AA surface mount configuration when ordering. Confirm that the application environment remains within the specified thermal limits to prevent overheating. Ensure soldering parameters adhere to the provided reflow profiles to maintain component integrity during assembly processes.

Selection Notes

Select this component for applications requiring a trigger voltage between 104 V and 118 V. Ensure the circuit design accommodates the 90 V maximum repetitive off-state voltage. Verify that the expected surge currents do not exceed the non-repetitive peak surge rating of 16.7 A at 50 Hz to avoid device failure.

Part Context

This part belongs to the Kxxxzy Standard Bidirectional SIDAC family manufactured by Littelfuse. The series offers various breakover voltages and package options including DO-15, DO-214, and TO-92. The K1100S specifically denotes the 104-118 V breakover variant in the compact surface mount package.

Replacement Considerations

Compatible substitutes include other K1100 variants such as K1100G (DO-15) or K1100E (TO-92) if leaded packaging is acceptable. Cross-series replacements must match the 104-118 V breakover range and 1 A RMS current rating.