K2200GHU

DIACs, SIDACs 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.

DIACs, SIDACs 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.

DIACs, SIDACs Applications

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

DIACs, SIDACs 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.

DIACs, SIDACs 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.

DIACs, SIDACs 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.

DIACs, SIDACs 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.