QK008RH4TP

Triacs Overview

The Littelfuse QK008RH4TP is an Alternistor TRIAC rated for a maximum repetitive off-state voltage of 1000 V and an RMS on-state current of 8 A. It utilizes a TO-220AB package with three pins and features an isolated case connection. The device supports a minimum critical rate of rise of off-state voltage of 25 V/µs and operates within a temperature range from -40 °C to +125 °C. Key electrical parameters include a maximum DC gate trigger current of 35 mA, a maximum DC gate trigger voltage of 1.3 V, and a maximum holding current of 35 mA.

Triacs Feature Summary

• High reliability construction designed for robust performance in demanding environments
• Isolated case configuration provides enhanced safety and simplified thermal management

Triacs Applications

• Industrial motor control systems
• Solid state relays
• Lighting dimmers

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm pinout and isolation characteristics. Ensure the procurement channel provides valid traceability for high-reliability components. Confirm RoHS compliance status through the manufacturer's latest certification records before finalizing orders.

Triacs Selection Notes

Select this component when a 1000 V blocking capability and 8 A continuous current are required in a through-hole isolated package. Compare the 25 V/µs dv/dt rating against circuit noise levels. Verify that the 35 mA gate drive requirements align with the available control logic output capabilities.

Triacs Part Context

This part belongs to the Littelfuse Alternistor family, which integrates TRIAC functionality with high surge tolerance. The QK series typically denotes 1000 V ratings within this lineup. The TO-220AB package is standard for power applications requiring effective heat dissipation and secure mechanical mounting.

Triacs Replacement Considerations

QK008DH4 offers similar 1000 V and 8 A specifications but uses a surface-mount TO-252 package. QK008NH4RP provides equivalent electrical ratings in an SMD SMTO-263-2 package. Verify pin compatibility and thermal resistance differences before substitution.