K2200GHU

Overview

The Littelfuse K2200GHU is a high-energy unidirectional SIDAC switch housed in a DO-15 through-hole package. It features a breakover voltage range of 210 V to 230 V and a repetitive peak off-state voltage of 190 V. The device supports an on-state RMS current of 1 A and can handle a peak surge current of up to 280 A at low repetition rates. Key electrical parameters include a holding current maximum of 60 mA, a critical rate-of-rise of off-stage voltage of 1500 V/µs, and a peak on-state voltage of 1.5 V at 1 A. Thermal resistance from junction to lead is 18 K/W for the DO-15 package.

Feature Summary

• Unidirectional silicon voltage-triggered thyristor switch designed for gas ignition applications requiring high pulse current capability.
• Switches on through a negative resistance region to a low on-state voltage, maintaining conduction until current drops below the holding threshold.
• RoHS-compliant construction with matte tin-plated terminals and UL recognized body material meeting flammability rating 94V-0.

Applications

• High voltage power supplies
• Natural gas igniters
• Xenon flash ignition systems

Procurement Notes

Verify the specific suffix 'GHU' corresponds to the DO-15 through-hole package and bulk packing configuration. Confirm that the required breakover voltage falls within the 210 V to 230 V range specified for the K2200 variant. Ensure the application circuit limits the on-state RMS current to 1 A and respects the thermal resistance constraints for the chosen mounting method.

Selection Notes

Select this component when a unidirectional trigger device is required rather than a bilateral SIDAC. The DO-15 package is suitable for through-hole assembly where higher surge current handling (up to 280 A) is needed compared to surface mount options. Verify that the system's blocking voltage does not exceed the 190 V VDRM rating under steady-state conditions.

Part Context

This part belongs to the K2xx0yHU series of high-energy unidirectional SIDACs. The 'K2200' designation indicates the specific breakover voltage tier (210–230 V), while 'G' specifies the DO-15 leaded package. Other series members include K2000, K2400, and K2500 variants with different voltage ratings, as well as SHU versions in DO-214AA packages.

Replacement Considerations

Direct substitutes within the same family include K2000GHU (190–210 V), K2400GHU (230–250 V), and K2500GHU (240–260 V). For surface mount equivalents, consider K2200SHU in the DO-214AA package. Ensure the replacement maintains the unidirectional characteristic and meets the 1 A RMS current requirement.