K2500GRP

Overview

The Littelfuse K2500GRP is a high-voltage trigger diode, classified as a SIDAC, designed for overvoltage protection circuits. It operates within the Kxxxzy series and utilizes a DO-15 axial through-hole package. The device features a breakover voltage (VBO) range of 240 V to 280 V with a maximum breakover current (IBO) of 10 uA. It supports a rated repetitive off-state voltage (VDRM) of 200 V and maintains a low leakage current of 5 uA under VDRM conditions. The component handles an RMS on-state current (It RMS) of 1 A and can withstand non-repetitive peak on-state currents of 16.7 A or 20 A depending on specific test conditions. It exhibits a holding current (Ih) maximum of 150 mA and an on-state voltage of 1.5 V. The operational temperature range spans from -40 C to +85 C.

Feature Summary

• Provides bidirectional high-voltage triggering for circuit protection applications
• Features robust surge handling capability with defined non-repetitive peak current ratings
• Designed for reliable operation in harsh thermal environments up to 85 C

Applications

• Gas discharge tube triggering circuits
• Overvoltage protection for sensitive electronic components
• High-voltage switch-mode power supply input stages

Procurement Notes

Verify the exact suffix 'GRP' against official Littelfuse documentation to confirm pinout and mechanical dimensions, as distributor listings may vary. Ensure the selected component matches the required DO-15 package style and RoHS compliance status specified in the manufacturer's datasheet for the specific part number variant.

Selection Notes

Select this component when a breakover voltage between 240 V and 280 V is required for triggering protective devices. Consider the 1 A RMS current rating and 200 V VDRM limit to ensure compatibility with the target circuit's voltage and current stresses. Verify that the DO-15 through-hole package fits the PCB layout constraints and that the operating temperature range meets the system requirements.

Part Context

The K2500GRP belongs to the Littelfuse Kxxxzy series of SIDACs, which are specialized thyristors used primarily for triggering gas discharge tubes. This series is characterized by its ability to handle high energy surges and provide precise voltage thresholds for overvoltage protection systems in industrial and consumer electronics.

Replacement Considerations

Potential substitutes include other SIDACs with similar VBO ranges (240-280 V) and DO-15 packages, such as the K2500GH or equivalent parts from manufacturers like Bourns or Shindengen, provided they meet the same electrical specifications and package constraints.