K2402GRP

Overview

The Littelfuse K2402GRP is a high-voltage trigger diode, classified as an SIDAC within the Kxxxzy series. It utilizes a DO-15 through-hole package and operates within a temperature range of -40°C to +85°C. The device features a breakdown voltage (VBO) between 260 V and 300 V, with a maximum holding current (Ih) of 150 mA. It supports a non-repetitive on-state current of 16.7 A or 20 A and maintains a rated repetitive off-state voltage (VDRM) of 190 V. The component exhibits a low on-state voltage of 1.5 V and a maximum leakage current of 5 uA at VDRM.

Feature Summary

• Bidirectional high-voltage triggering capability for AC circuit protection
• Integrated SIDAC design eliminates external gate components
• Robust construction in a standard DO-15 axial leaded package

Applications

• Gas discharge tube triggering circuits
• Overvoltage protection for sensitive electronic loads
• Phase control applications requiring precise firing thresholds

Procurement Notes

Verify the specific breakdown voltage tolerance required for the application against the datasheet specifications. Confirm that the DO-15 through-hole mounting style aligns with the PCB layout constraints. Ensure the operating temperature range meets the environmental requirements of the final assembly.

Selection Notes

Select this component when a reliable, bidirectional trigger source is needed for gas tubes or thyristors. Compare the 260 V to 300 V breakdown range against the target ignition voltage of the protected device. Consider the 1 A RMS current rating for continuous operation limits in the circuit design.

Part Context

This part belongs to the Kxxxzy series of SIDACs from Littelfuse. These devices are designed to replace discrete diac-triac combinations, simplifying circuit topology. The K2402GRP specifically targets higher voltage triggering applications compared to lower-voltage variants in the same family.

Replacement Considerations

Check for direct substitutes within the K2402 series or other SIDACs with matching VBO ranges. Verify pinout compatibility and thermal characteristics before substituting with generic equivalents.