K2400EH70RP2

Overview

The Littelfuse K2400EH70RP2 is a high-voltage trigger diode (Sidac) from the Kxxxzy series, designed for overvoltage protection in through-hole applications. It features a bidirectional switching characteristic with a breakover voltage range of 205 V to 230 V and a rated repetitive off-state voltage of 180 V. The device supports an RMS current rating of 1 A and can handle non-repetitive on-state currents of 16.7 A or 20 A. Packaged in a TO-92 case, it operates within a temperature range of -40°C to +85°C. The component is supplied in reel packaging.

Feature Summary

• Bidirectional high-energy switching capability for symmetrical overvoltage protection
• High peak current handling suitable for surge suppression applications
• Through-hole mounting configuration for robust mechanical attachment

Applications

• Surge protection for AC mains inputs
• Overvoltage protection in gas discharge tube triggering circuits
• Protection for sensitive electronic components in industrial control systems

Procurement Notes

Verify the specific suffix RP2 indicates reel packaging when ordering. Confirm the breakover voltage tolerance requirements match the 205 V to 230 V specification. Ensure the TO-92 through-hole footprint aligns with the target PCB design. Check RoHS compliance status if required by project specifications.

Selection Notes

Select this component when a bidirectional trigger device with a nominal 220 V breakover voltage is required. Compare the 1 A RMS current rating against the expected load conditions. Consider the TO-92 package size constraints relative to available board space. Verify that the operating temperature range meets the environmental demands of the application.

Part Context

This part belongs to the Littelfuse Teccor Sidac family, specifically the K-series designed for high-energy switching. It serves as a cost-effective alternative to more complex thyristor-based protection circuits. The device is commonly used in conjunction with other transient voltage suppression elements to provide comprehensive circuit protection.

Replacement Considerations

The K2200EH70RP2 is a similar variant within the same series but features a lower breakover voltage range of 205 V to 230 V compared to the standard 240V variants. Ensure the lower voltage threshold does not cause premature triggering in the target application.