K0900E70RP2

Overview

The Littelfuse K0900E70RP2 is a standard bidirectional SIDAC solid-state switch from the Kxxxzy series, housed in a TO-92 package with Type 70 lead form. It features a breakover voltage (VBO) range of 79 V to 97 V and a repetitive peak off-state voltage (VDRM) of 70 V. The device supports an on-state RMS current (IT(RMS)) of 1 A at 50/60 Hz and can withstand a peak non-repetitive surge current (ITSM) of 20 A for a single cycle at 60 Hz. It operates within a junction temperature range of -40°C to +125°C and includes glass-passivated junctions for ruggedness.

Feature Summary

• Bidirectional switching capability utilizing negative resistance region for low on-state voltage conduction.
• Glass-passivated silicon junction construction designed for harsh environment reliability.
• RoHS compliant manufacturing process ensuring environmental safety standards.

Applications

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

Procurement Notes

Verify the specific ordering suffix RP2 corresponds to the reel pack configuration for the TO-92 package type. Confirm that the component marking matches the K0900E designation. Ensure the supplier provides traceability documentation consistent with Littelfuse manufacturing standards. Check for any recent product change notifications affecting packaging or material composition.

Selection Notes

Select this component when a trigger voltage between 79 V and 97 V is required for AC circuit protection. Ensure the application current does not exceed the 1 A RMS rating. Verify that the TO-92 through-hole package fits the PCB layout constraints. Consider thermal resistance limits if operating near maximum ambient temperatures.

Part Context

This part belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. The series offers various breakover voltages and package options including DO-15, DO-214, and TO-92. The K0900 variant specifically targets lower voltage triggering applications compared to higher voltage counterparts in the same family.

Replacement Considerations

Compatible substitutes include other K0900 variants such as K0900E70 (bulk) or K0900G (DO-15 package). Cross-package replacements require verifying pinout compatibility and thermal dissipation characteristics. Ensure replacement parts maintain the same VBO and VDRM specifications.