K2400F1

Overview

The K2400F1 is a high-voltage trigger diode from Littelfuse, functioning as a Silicon Symmetric Trigger Diode (SIDAC). It features a breakover voltage range of 220V to 250V and a maximum breakover current of 10µA. The device supports a peak output current of 1A and maintains a holding current of up to 150mA. Packaged in a TO-92 (TO-226AC) case, it is designed for robust performance in high-voltage triggering applications.

Feature Summary

• Symmetrical bidirectional switching capability for AC circuits
• High-voltage breakdown characteristics for reliable triggering
• Robust construction suitable for demanding industrial environments

Applications

• Natural gas igniters
• High-pressure sodium lamp starters
• Xenon flash ignition systems
• High voltage power supplies

Procurement Notes

Verify the specific manufacturer source to ensure authenticity, as counterfeit components exist in the market. Confirm that the received units match the Littelfuse branding and part marking specifications. Check for physical damage to the TO-92 leads before integration into circuit boards. Ensure compliance with relevant safety standards for high-voltage components in your final assembly.

Selection Notes

Select this component when a symmetric trigger device with a 220V to 250V breakover threshold is required. The TO-92 package is ideal for through-hole mounting in space-constrained designs. Consider the 1A peak current rating to ensure the device can handle the load without failure. Evaluate the 10µA breakover current limit for sensitivity requirements in the triggering circuit.

Part Context

The K2400F1 belongs to the Kxxxzy Series SIDAC family from Littelfuse. These devices are specialized thyristors designed specifically for high-voltage triggering applications. Unlike standard DIACs, SIDACs offer higher voltage ratings and current capabilities, making them suitable for industrial and commercial lighting systems where reliable high-voltage pulses are necessary for ignition or switching.

Replacement Considerations

Check Littelfuse documentation for direct cross-references within the Kxxxzy series. Verify pinout compatibility if substituting with other TO-92 SIDACs. Ensure replacement parts meet the same 220-250V breakover voltage range to maintain circuit functionality.