K2400E70

Overview

The Littelfuse K2400E70 is a silicon bilateral voltage-triggered switch (SIDAC) from the Kxxxzy series, housed in a TO-92 package. It features a breakover voltage range of 220 V to 250 V and a repetitive peak off-state voltage of 190 V. The device supports an on-state RMS current of 1 A at 50/60 Hz with a junction temperature limit of 125°C. Key electrical parameters include a maximum dynamic holding current of 150 mA, a peak on-state voltage of 1.5 V, and a non-repetitive surge current rating of 16.7 A at 50 Hz. It operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Features glass-passivated junctions for ruggedness and dependable performance in harsh environments.
• Provides bidirectional switching capability through a negative resistance region to a low on-state voltage upon exceeding the breakover point.

Applications

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

Procurement Notes

Verify the specific ordering suffix against official Littelfuse documentation to confirm the exact package type and packaging configuration. Ensure that the selected variant matches the required lead form dimensions and bulk or reel packing quantities specified in the manufacturer's product selector table.

Selection Notes

Select this component based on the required breakover voltage range of 220 V to 250 V and the need for a TO-92 through-hole package. Confirm that the circuit design accommodates the 1 A RMS current rating and the 190 V repetitive peak off-state voltage limits under expected operating conditions.

Part Context

This part belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. The series includes various voltage ratings and package options such as DO-15, DO-214, and TO-92. The 'E' designation specifically indicates the TO-92 package style within this family of silicon voltage-triggered switches.

Replacement Considerations

Compatible substitutes within the same series include K2300E70 and K2500E70, which share the TO-92 package but offer different breakover voltage ranges. Verify that the alternative part number meets the specific voltage and current requirements of the application before substitution.