QJ8008NH4TP

Triacs Overview

The Littelfuse QJ8008NH4TP is a bidirectional TRIAC from the Qxx08xHx series, rated for 800 V peak repetitive off-state voltage and 8 A RMS on-state current. It features a non-repetitive surge current capacity of 83 A and an on-state voltage of 1.6 V. The device operates within a temperature range of -40 °C to +125 °C and utilizes a TO-263AB (SMTO-263-2) surface-mount package. Key gate parameters include a trigger voltage of 1.3 V and a maximum holding current of 35 mA.

Triacs Feature Summary

• High-voltage bidirectional switching capability with robust thermal performance
• Surface-mount construction in a compact TO-263AB package for automated assembly
• Defined gate triggering characteristics for reliable control circuit integration

Triacs Applications

• Solid-state relay modules requiring high isolation and switching
• Industrial motor control systems for AC power regulation
• Lighting dimmer circuits for commercial or industrial fixtures

Triacs Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm package type and tape/reel specifications. Ensure that the selected variant matches the required lead time and production cycle constraints. Cross-reference the component marking with official Littelfuse documentation to authenticate the source and prevent counterfeit substitution during procurement.

Triacs Selection Notes

Select this component when a surface-mount TRIAC with 800 V blocking capability and 8 A continuous current rating is required. Consider the TO-263AB footprint compatibility with existing PCB layouts. Evaluate the thermal dissipation requirements relative to the 125 °C junction temperature limit and the specific gate drive voltage available in the control circuitry.

Triacs Part Context

This part belongs to the Littelfuse Qxx08xHx series of high-temperature TRIACs. These devices are engineered for demanding power electronics applications where reliability under high voltage stress is critical. The series offers various packaging options to suit different manufacturing processes and space constraints.

Triacs Replacement Considerations

Direct substitutes may include other 800 V, 8 A TRIACs in TO-263 packages from manufacturers such as STMicroelectronics or Vishay. Verify pinout compatibility, gate trigger current limits, and thermal resistance values before substitution.