K1300SRP

Overview

The Littelfuse K1300SRP is a high-voltage trigger diode (SIDAC) designed for overvoltage protection in electronic circuits. It features a symmetrical breakover voltage range of 120V to 138V, enabling reliable triggering in both polarities. The device supports a peak repetitive current of 20A and an RMS current of 1A, housed in a compact SMB (DO-214AA) surface-mount package.

Feature Summary

• Symmetrical bidirectional switching characteristics for AC line protection
• High surge current capability with 20A peak repetitive rating
• Compact surface-mount SMB package design for space-constrained applications

Applications

• Surge protection for telephone and data lines
• Overvoltage protection in consumer electronics
• Triggering elements for thyristor-based protection circuits

Procurement Notes

Verify the specific breakover voltage bin required for the application, as the K1300SRP covers a range from 120V to 138V. Confirm that the SMB tape-and-reel packaging format aligns with automated assembly equipment specifications. Ensure thermal management considerations are addressed given the 1A RMS current rating during sustained operation.

Selection Notes

Select this component when symmetrical high-voltage triggering is necessary for transient suppression. The SMB package offers a balance between power handling and board space efficiency. Consider the 120-138V breakdown window to ensure compatibility with the target circuit's operating voltage and surge tolerance requirements without premature triggering.

Part Context

This part belongs to Littelfuse’s SIDAC family of silicon avalanche devices. These components function similarly to DIACs but offer higher current handling capabilities. The K1300SRP is engineered for robust performance in harsh electrical environments, providing reliable latching behavior once the breakover threshold is exceeded.

Replacement Considerations

Direct substitutes must match the 120-138V breakover range and SMB DO-214AA footprint. Verify equivalent peak current ratings of at least 20A. Cross-reference datasheets for identical symmetrical characteristics and thermal resistance values to ensure functional parity in existing designs.