K2200G

Overview

The Littelfuse K2200G is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, housed in a DO-15 through-hole package. It features a breakover voltage range of 205 V to 230 V and a repetitive peak off-state voltage of 180 V. The device supports an on-state RMS current of 1 A at 50/60 Hz and can withstand a peak non-repetitive surge current of 20 A for a single cycle at 60 Hz. Operating within a junction temperature range of -40°C to +125°C, it utilizes glass-passivated junctions for ruggedness.

Feature Summary

• Bilateral switching capability with negative resistance region transition
• Glass-passivated junction construction for environmental durability
• RoHS compliant manufacturing process

Applications

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

Procurement Notes

Verify component authenticity by checking the date code marking format against official Littelfuse standards. Confirm the package type matches the required DO-15 form factor. Ensure the specific voltage rating aligns with circuit design requirements before finalizing orders. Request datasheet revisions if sourcing from secondary distributors.

Selection Notes

Select this component when a bidirectional trigger switch is required for AC circuits. The 205 V to 230 V breakover range suits applications needing precise voltage thresholds. Consider thermal resistance limits during high-current operation. Verify that the holding current specifications meet the load requirements to ensure reliable turn-off behavior.

Part Context

This part belongs to the Kxxxzy SIDAC family, which includes various voltage ratings and package options such as DO-214 and TO-92. The 'K' prefix identifies the device as a SIDAC, while '220' indicates the specific voltage class. The 'G' suffix denotes the DO-15 axial leaded package configuration used in this specific model.

Replacement Considerations

Compatible substitutes include other K2200 variants like K2200S or K2200E, provided the package footprint and lead dimensions are compatible with the existing PCB layout. Verify that alternative packages maintain identical electrical parameters for breakover and holding currents.