K1500E70RP2

Overview

The Littelfuse K1500E70RP2 is a standard bidirectional SIDAC from the Kxxxzy series, housed in a TO-92 package with Type 70 lead form. It functions as a silicon bilateral voltage-triggered switch with a breakover voltage range of 140V to 170V and a repetitive peak off-state voltage of 90V. The device supports an on-state RMS current of 1A at 50/60Hz and features a glass-passivated junction for ruggedness. It operates within a junction temperature range of -40°C to 125°C and is supplied in a reel pack configuration.

Feature Summary

• Silicon bilateral voltage triggered switch utilizing negative resistance region for switching
• Glass-passivated junction construction for environmental durability
• Bidirectional operation suitable for AC circuit applications

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 required reel packaging format for automated assembly processes. Confirm that the Type 70 lead form dimensions align with the target PCB footprint requirements. Ensure the component marking matches the expected date code and lot traceability standards for quality control purposes.

Selection Notes

Select this component when a trigger voltage between 140V and 170V is required for AC protection or triggering circuits. The TO-92 package is appropriate for through-hole mounting where space allows. Consider the 1A RMS current rating against the maximum load current to ensure safe operation under continuous conduction conditions.

Part Context

This part belongs to the Kxxxzy Series of Standard Bidirectional SIDACs manufactured by Littelfuse. The series provides various breakover voltage options ranging from 79V to 330V across different packages including DO-15, DO-214, and TO-92. The K1500 variant specifically targets mid-range voltage triggering applications within this family.

Replacement Considerations

Other parts in the Kxxxzy series with matching voltage ratings (K1500G, K1500S) may be considered if package type differences are acceptable. Verify that any substitute maintains the same bidirectional switching characteristics and holding current specifications.