K2500SHRP

Overview

The Littelfuse K2500SHRP is a high-energy SIDAC (Silicon Diode for Alternating Current) surge protection device manufactured by Littelfuse Inc. This component belongs to the K-series of voltage-triggered thyristors, designed to protect sensitive electronic circuits from transient overvoltage events. It features a bidirectional switching characteristic with a breakover voltage range of 240 V to 280 V. The device is rated for a maximum repetitive peak off-state voltage of 200 V and can handle non-repetitive peak on-state currents up to 16.7 A or 20 A depending on the specific test conditions defined in the datasheet. It operates within a temperature range of -40°C to +85°C.

Feature Summary

• Bidirectional triggering capability for AC line protection applications
• High energy handling capacity for robust surge suppression
• Low holding current to ensure reliable turn-off after triggering

Applications

• Surge protection for telecommunications equipment
• Protection of AC power input stages in consumer electronics
• Transient voltage suppression in industrial control systems

Procurement Notes

Verify the exact suffix 'HRP' against the official Littelfuse datasheet to confirm package type and tape/reel specifications. Ensure the component meets RoHS and REACH compliance requirements for your target market. Cross-reference the part number with authorized distributors to confirm availability and authenticity before procurement.

Selection Notes

Select this component when designing circuits requiring high-energy surge protection with a breakover voltage between 240 V and 280 V. Consider the non-repetitive peak current rating to ensure the device can withstand expected transient events without damage. Verify that the through-hole package fits the PCB layout constraints and that the operating temperature range aligns with the application environment.

Part Context

The K2500SHRP is part of Littelfuse's broader SIDACtor and SIDAC product families, which are specialized thyristor-based devices for overvoltage protection. These components are distinct from standard TVS diodes and MOVs, offering higher energy absorption capabilities and latching behavior until current drops below the holding threshold. The K-series specifically targets high-voltage AC line protection scenarios.

Replacement Considerations

Potential substitutes include other SIDAC devices from Littelfuse such as the K2500GH or K2500F2, provided they match the breakover voltage and current ratings. Other manufacturers like STMicroelectronics or Nexperia may offer equivalent parts, but careful verification of electrical parameters and package dimensions is required.