K2500E70RP2

Overview

The Littelfuse K2500E70RP2 is a standard bidirectional SIDAC from the Kxxxzy series, functioning as a silicon voltage-triggered switch. It features a breakover voltage range of 240 V to 280 V and a repetitive peak off-state voltage of 200 V. The device supports an on-state RMS current of 1 A at 50/60 Hz and a peak non-repetitive surge current of 20 A for single cycles 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 and is supplied in a reel pack configuration.

Feature Summary

• Bidirectional switching capability utilizing negative resistance region for low on-state voltage conduction
• Glass-passivated junctions designed for ruggedness and dependable performance in harsh environments
• RoHS compliant construction ensuring environmental safety standards are met

Applications

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

Procurement Notes

Verify the specific ordering suffix RP2 confirms the reel pack packaging format for the TO-92 package type. Confirm that the voltage rating code 250 corresponds to the required 240 V to 280 V breakover range for the target circuit design. Ensure compatibility with the specified Type 70 lead form dimensions during PCB layout and assembly processes.

Selection Notes

Select this component when a bidirectional trigger device with a 240 V to 280 V breakover threshold is required. The TO-92 package suits through-hole mounting applications where space allows. Verify that the 1 A RMS current rating meets the load requirements and that the 20 A surge capability handles potential transient events without damage.

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 package options including DO-15, DO-214, and TO-92. The K2500 variant specifically targets higher voltage triggering applications compared to lower voltage counterparts in the lineup.

Replacement Considerations

Compatible substitutes include other K2500 variants such as K2500E70 (bulk) or K2500G (DO-15 package). Ensure any replacement maintains the same 240 V to 280 V breakover voltage range and 1 A RMS current rating to preserve circuit functionality.