Q8008RH4

Triacs Overview

The Littelfuse Q8008RH4 is an Alternistor TRIAC rated for 800 V repetitive peak off-state voltage and 8 A RMS on-state current. It features a maximum non-repetitive surge current of 100 A and a low on-state voltage of 1.6 V. The device operates within a junction temperature range of -40 °C to +125 °C, with a maximum holding current of 35 mA and gate trigger parameters of 1.3 V and 35 mA. Packaged in a TO-220AB flange mount configuration, it provides high reliability for industrial power control applications.

Triacs Feature Summary

• Alternistor technology offering enhanced dv/dt immunity and robust switching performance
• Flange mount package design facilitating efficient thermal dissipation via the main terminal
• High reliability construction suitable for demanding industrial environments

Triacs Applications

• Industrial motor speed control systems
• Solid state relays and contactors
• High-power AC switching circuits

Triacs Procurement Notes

Verify the specific suffix RH4 against official Littelfuse documentation to confirm the exact pinout and mechanical dimensions associated with the TO-220AB flange mount variant. Ensure compatibility with existing heatsinking infrastructure due to the flange-mounted design requirements.

Triacs Selection Notes

Select this component when high dv/dt immunity and robust surge capability are required in a through-hole flange mount package. Compare the 8 A RMS rating and 800 V blocking voltage against circuit demands. Verify that the TO-220AB footprint aligns with the printed circuit board layout and thermal management strategy.

Triacs Part Context

This part belongs to the Littelfuse Qxx08xHx series of Alternistor TRIACs. These devices utilize advanced silicon technology to provide superior switching characteristics compared to standard TRIACs, particularly in high-noise or fast-switching industrial applications requiring reliable commutation.

Triacs Replacement Considerations

Cross-reference with other 800 V, 8 A Alternistor TRIACs in the TO-220AB package from Littelfuse. Verify electrical parameter equivalence, specifically regarding gate trigger currents and holding currents, before substituting.