K2000E70

Overview

The Littelfuse K2000E70 is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage range of 190 V to 215 V and a repetitive peak off-state voltage of 180 V. The device supports an on-state RMS current of 1 A at 50/60 Hz and can withstand a peak non-repetitive surge current of 20 A for a single cycle at 60 Hz. Packaged in a TO-92 form factor with Type 70 leads, it operates within a junction temperature range of -40°C to 125°C.

Feature Summary

• Glass-passivated junctions ensure ruggedness and dependability in harsh environments.
• Bilateral switching capability allows operation in both directions through a negative resistance region.
• Low on-state voltage minimizes power dissipation during conduction.

Applications

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

Procurement Notes

Verify the specific package variant matches the application requirements, as the K2000E70 designation indicates the TO-92 lead form. Confirm RoHS compliance status directly with the manufacturer or authorized distributors, as regulatory updates may occur. Ensure the ordering suffix aligns with the desired packaging mode, such as bulk or reel pack, to match assembly line specifications.

Selection Notes

Select this component when a trigger voltage between 190 V and 215 V is required for AC circuit orientation. The 1 A RMS current rating suits moderate load applications. Consider the thermal resistance characteristics for heat dissipation planning. Verify that the holding current limits are compatible with the load impedance to ensure reliable turn-off behavior in the target circuit design.

Part Context

This part belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. The series offers various breakover voltages ranging from 79 V to 330 V across different packages including DO-15, DO-214, and TO-92. The K2000E70 specifically utilizes the 'E' code for the TO-92 package type with Type 70 lead forms.

Replacement Considerations

Compatible substitutes include other K2000 variants such as K2000G (DO-15) or K2000S (DO-214), provided the physical footprint and lead configuration differences are accommodated in the PCB layout. Direct pin-to-pin replacements require matching the TO-92 package constraint.