K2500EH70RP2

Overview

The K2500EH70RP2 is a high-voltage trigger diode (SIDAC) manufactured by Littelfuse, designed for robust circuit protection in through-hole applications. It operates within the Kxxxzy series and utilizes a TO-92 package. The device features a breakover voltage range of 240 V to 280 V and a rated repetitive off-state voltage of 200 V. It supports an RMS on-state current of 1 A and can handle non-repetitive on-state currents up to 20 A. The component maintains a low holding current maximum of 150 mA and exhibits an on-state voltage of 1.5 V. It functions reliably across a temperature range from -40°C to +85°C.

Feature Summary

• Provides bidirectional high-energy surge protection for sensitive electronic circuits
• Features fast switching response with low on-state voltage drop during conduction
• Designed for reliable operation in harsh thermal environments

Applications

• Protection of telecommunications equipment such as modems and line cards
• Surge suppression in AC power supply inputs
• Compliance support for regulatory standards including IEC 60950 and UL 60950

Procurement Notes

Verify the specific suffix RP2 against official Littelfuse documentation to confirm reel packaging requirements. Ensure the ordering quantity aligns with the manufacturer's standard pack size. Cross-reference the datasheet for any recent design changes or environmental compliance updates prior to final procurement decisions.

Selection Notes

Select this component when a breakover voltage between 240 V and 280 V is required for overvoltage protection. Consider the 1 A RMS current rating and TO-92 package constraints for PCB layout. Verify that the 150 mA holding current is sufficient to latch the device appropriately for the specific application circuit design.

Part Context

This part belongs to the Littelfuse K-series SIDACtor family, which are solid-state protection devices. These components are specifically engineered to protect telecommunications and consumer electronics from high-voltage transients. The K2500 variant represents a higher voltage threshold within this protective semiconductor lineup.

Replacement Considerations

The K2500E70 is a related variant within the same series offering similar electrical characteristics but potentially different packaging options. Verify pinout compatibility and exact voltage tolerances before substituting.