K1500GURP

Overview

The K1500GURP is a standard unidirectional SIDAC manufactured by Littelfuse Inc. in the DO-15 package. It features a breakover voltage range of 142 to 157 V and a rated repetitive off-state voltage of 120 V. The device supports a maximum on-state current of 1 A with an on-state voltage of 1.5 V. Key electrical parameters include a maximum holding current of 80 mA, an off-state leakage current of 5 uA at VDRM, and a maximum breakover current of 10 uA.

Feature Summary

• Unidirectional switching capability for gate triggering applications
• High surge current handling with 1 A on-state rating
• Glass passivated junction construction for reliability

Applications

• Thyristor and TRIAC gate triggering circuits
• AC line protection interfaces
• Phase control circuitry

Procurement Notes

Verify component authenticity through authorized Littelfuse distributors or TTI, Inc. channels. Confirm RoHS exemption status and ECCN classification EAR99 compliance prior to order placement. Ensure packaging matches DO-15 specifications and check SVHC declarations against current regulatory requirements to maintain supply chain integrity.

Selection Notes

Select this component when unidirectional high-current switching is required for thyristor gates. The 142-157 V breakover range suits specific AC line voltages. Compare against bidirectional DIACs if symmetrical triggering is needed. Validate that the 120 V off-state voltage meets circuit isolation requirements without premature conduction during normal operation.

Part Context

This part belongs to the Kxxx0yU SIDAC series from Littelfuse. It complements other discrete semiconductor products designed for power control applications. The DO-15 axial leaded package provides robust mechanical stability for through-hole mounting in industrial and consumer electronics environments requiring reliable gate drive signals.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing circuit designs before attempting substitution with generic equivalents.