K2200S

Overview

The Littelfuse K2200S is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage (VBO) range of 205 V to 230 V and a repetitive peak off-state voltage (VDRM) of 180 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 50/60 Hz and handles a peak non-repetitive surge current (ITSM) of 20 A for single cycles at 60 Hz. Packaged in DO-214AC (SMD/SMT), it operates within a junction temperature range of -40°C to 125°C and a storage temperature range of -40°C to 150°C.

Feature Summary

• Bidirectional switching capability with glass-passivated junctions for ruggedness
• Low on-state voltage drop during conduction
• RoHS compliant construction

Applications

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

Procurement Notes

Verify the specific package suffix 'S' corresponds to the DO-214AC surface-mount configuration required for your design. Confirm that the 180 V VDRM rating aligns with your circuit's maximum blocking voltage requirements. Ensure thermal management accounts for the specified junction temperature limits during operation.

Selection Notes

Select this component when a bidirectional trigger is needed for AC circuits with voltages between 205 V and 230 V. Compare ITSM ratings against expected surge conditions. Consider the DO-214AC footprint if space constraints preclude through-hole packages like DO-15 or TO-92 variants found in the same series.

Part Context

The K2200S belongs to the Kxxxzy family of standard bidirectional SIDACs manufactured by Littelfuse under the Teccor brand. This series provides various breakover voltage options ranging from 79 V to 330 V across different package types including DO-15, DO-214, and TO-92, allowing designers to choose based on voltage and mounting needs.

Replacement Considerations

K2200G (DO-15 through-hole equivalent)

FAQ

What is the dynamic holding current range for the K2200S?

The dynamic holding current (IH) ranges from 10 mA to 150 mA.

How does the K2200S handle overvoltage events?

It switches on through a negative resistance region when the applied voltage exceeds the breakover point, maintaining conduction until current drops below the holding threshold.

Is the K2200S suitable for high-temperature environments?

Yes, it has a maximum junction temperature of 125°C and can withstand storage temperatures up to 150°C.