K2502GRP

Overview

The K2502GRP is a silicon bilateral voltage-triggered switch (SIDAC) manufactured by Littelfuse Inc. It features a DO-15 axial through-hole package and operates within a temperature range of -40°C to +85°C. The device has a rated repetitive off-state voltage (VDRM) of 200 V and an on-state RMS current rating of 1 A. Breakover voltage (VBO) ranges from 240 V to 280 V, with a maximum breakover current (IBO) of 10 µA. Leakage current at VDRM is limited to 5 µA, while the holding current (Ih) maximum is 150 mA. The on-state voltage is 3 V, and it supports non-repetitive on-state currents of 16.7 A or 20 A.

Feature Summary

• Bilateral voltage-triggered switching capability for AC applications
• High surge current handling with non-repetitive ratings up to 20 A
• Robust axial lead construction in a DO-15 package for reliable mounting

Applications

• Triggering SCRs and TRIACs in phase control circuits
• Overvoltage protection in electronic systems
• Gate drive circuits for thyristor-based power controllers

Procurement Notes

Verify the specific datasheet revision and electrical tolerances against the manufacturer's official documentation before integration. Confirm that the DO-15 package dimensions and lead spacing match the target PCB layout requirements. Ensure the operating environment remains within the specified -40°C to +85°C temperature range to maintain performance reliability. Check for any RoHS or REACH compliance updates relevant to the procurement region.

Selection Notes

Select this component when a bilateral trigger device with a 240 V to 280 V breakover threshold is required. The 1 A RMS current rating suits moderate power gate drive applications. Consider the DO-15 package size for available board space. Verify that the 150 mA holding current limit aligns with the downstream SCR or TRIAC gate requirements. Evaluate the non-repetitive surge capability if transient load conditions are present.

Part Context

The K2502GRP belongs to the Kxxxzy series of SIDACs from Littelfuse. These devices are designed as silicon bilateral switches for triggering other thyristors. The family typically offers various breakover voltage options to suit different circuit thresholds. The DO-15 package provides a standard form factor for through-hole implementation in industrial and consumer electronics.

Replacement Considerations

Consult Littelfuse official substitution guides for equivalent SIDACs with matching VBO and I_RMS ratings. Verify pinout compatibility and package dimensions for direct replacement. Cross-reference thermal characteristics and holding current limits to ensure circuit stability.