K2000GHU

Overview

The Littelfuse K2000GHU is a high-energy unidirectional SIDAC switch designed for gas ignition applications requiring high pulse current at low repetition rates. It operates within a DO-15 leaded package and features a breakover voltage range of 190 V to 210 V with a maximum repetitive peak off-state voltage of 180 V. The device supports an on-state RMS current of 1 A, a holding current maximum of 60 mA, and a peak on-state voltage of 1.5 V at 1 A. It withstands a critical rate of rise of on-state current (di/dt) of 220 A/µs and offers surge peak on-state current capabilities up to 280 A depending on pulse width.

Feature Summary

• Unidirectional silicon bilateral voltage-triggered thyristor switch
• High energy capability suitable for low repetition rate gas ignition
• RoHS-compliant construction with matte tin-plated terminals

Applications

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

Procurement Notes

Verify the specific ordering suffix to confirm the package type and packing mode. The 'G' suffix indicates the DO-15 through-hole package. Confirm whether the base quantity corresponds to bulk packaging or reel pack options based on the required assembly volume. Ensure the component meets RoHS compliance standards for the intended manufacturing process.

Selection Notes

Select this component when a unidirectional trigger is required for high-voltage ignition circuits. The K2000 variant provides a 190 V to 210 V breakover threshold. Compare thermal resistance values between DO-15 and surface mount packages if board space is constrained. Ensure the circuit design accommodates the 280 A non-repetitive surge current capability during ignition events.

Part Context

This part belongs to the K2xx0yHU series of high-energy unidirectional SIDACs from Littelfuse. The series includes variants with different breakover voltages (K2200, K2400, K2500) and package options (DO-15 and DO-214AA). The K2000GHU specifically denotes the lowest voltage tier in the standard lineup with a DO-15 axial leaded package.

Replacement Considerations

Direct substitutes include other K2xx0yHU series parts such as K2200GHU or K2400GHU if higher breakover voltages are acceptable. Surface mount equivalents like K2000SHU offer identical electrical characteristics in a DO-214AA package.