K1300GURP

Overview

The K1300GURP is a standard unidirectional SIDAC manufactured by Littelfuse Inc. It operates within a breakover voltage range of 120 to 138V and supports a peak output current of 1A. The device features a maximum hold current of 80mA and an on-state voltage of 1.5V. Designed for through-hole mounting, it utilizes the DO-15 (DO-204AC) axial package. The component functions reliably across an operating temperature range from -40°C to +125°C.

Feature Summary

• Unidirectional switching capability for precise trigger applications
• High peak output current handling up to 1A
• Robust thermal performance across extended industrial temperature ranges

Applications

• Triggering silicon controlled rectifiers (SCRs)
• Gate drive circuits for triacs
• Overvoltage protection in AC power supplies

Procurement Notes

Verify the specific suffix 'GURP' against official Littelfuse documentation to confirm lead times and packaging configurations. Ensure the procurement channel provides valid traceability for this active lifecycle component. Cross-reference the DO-15 package dimensions with your PCB layout requirements before finalizing orders to prevent assembly mismatches.

Selection Notes

Select this component when unidirectional triggering is required rather than bidirectional symmetry. The 120-138V breakover range suits standard AC line voltages. Consider the 1A peak current rating against load requirements. The DO-15 package dictates board space allocation. Verify thermal management needs given the 125°C junction limit.

Part Context

This part belongs to the Littelfuse SIDAC family, designed for gate triggering and overvoltage protection. Unlike DIACs, SIDACs offer higher current capabilities and latching behavior. The K1300 series provides reliable switching for thyristor-based control systems. This specific model represents a standard unidirectional variant within the broader protection portfolio.

Replacement Considerations

Check Littelfuse official substitution lists for direct equivalents. Generic replacements may differ in hold current or breakover tolerance. Ensure any substitute maintains the DO-15 footprint and 1A peak current rating. Verify that alternative parts support the same unidirectional operation mode.