K2202G

Overview

The Littelfuse K2202G is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series. 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. It utilizes a DO-15 through-hole package with glass-passivated junctions, operating within a junction temperature range of -40°C to +125°C.

Feature Summary

• Bilateral switching capability utilizing negative resistance region for low on-state voltage conduction
• Glass-passivated junction construction for ruggedness in harsh environments
• 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 manufacturer markings against official datasheet specifications. Confirm RoHS compliance status via current Littelfuse documentation. Ensure ordering suffixes match required packaging options such as bulk or reel pack quantities. Validate that the specific part number corresponds to the desired circuit function and package type before finalizing procurement orders.

Selection Notes

Select this component based on the required breakover voltage range of 205 V to 230 V. Ensure the application current does not exceed the 1 A RMS rating. Verify thermal management requirements against the specified junction temperature limits. Consider the DO-15 package dimensions for PCB layout constraints. Confirm compatibility with the intended AC line frequency and load characteristics.

Part Context

The K2202G belongs to the Kxxxzy SIDAC family, which provides standard bidirectional triggering functions. This series includes various voltage ratings and package options like DO-15, DO-214, and TO-92. The '2' in the model indicates a two-series die configuration, while 'G' denotes the DO-15 axial leaded package format used for through-hole mounting.

Replacement Considerations

Compatible substitutes include other K220zy series parts with matching voltage ranges, such as K2200G or K2300G. Verify that alternative components meet the same electrical parameters and physical package dimensions. Ensure any replacement maintains the required RoHS compliance and environmental testing standards.