QK010RH5

Triacs Overview

The Littelfuse QK010RH5 is a high-reliability bidirectional triac designed for robust power control applications. It features a rated repetitive off-state voltage (VDRM) of 800 V and an RMS on-state current (IT(RMS)) of 10 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-220AB package with three pins. Key electrical characteristics include a maximum holding current of 50 mA, a gate trigger voltage of 1.5 V, and a gate trigger current of 50 mA. It exhibits a typical on-state voltage of 1.6 V and a maximum leakage current of 10 µA at rated voltage.

Triacs Feature Summary

• High reliability construction suitable for demanding industrial environments
• Bidirectional switching capability for AC power control circuits
• Robust thermal performance with a wide operating temperature range

Triacs Applications

• Industrial motor speed control systems
• Solid-state relays and contactors
• AC power regulation and lighting dimmers

Triacs Procurement Notes

Verify the specific suffix 'H5' against the manufacturer's official datasheet to confirm pinout configuration and lead-free status. Ensure the TO-220AB package dimensions match the target PCB footprint. Confirm RoHS compliance requirements align with project specifications before finalizing procurement orders.

Triacs Selection Notes

Select this component when an 800 V blocking voltage and 10 A continuous current capacity are required in a through-hole package. Compare gate sensitivity requirements against the 50 mA trigger current specification. Evaluate thermal management needs given the 125°C maximum junction temperature limit and the TO-220AB heat dissipation capabilities.

Triacs Part Context

This part belongs to the Qxx10xx series of triacs from Littelfuse, which are engineered for general-purpose AC power switching. The QK010RH5 variant specifically targets high-reliability applications requiring durable semiconductor switches. It serves as a core component in thyristor-based power control modules where consistent performance under varying load conditions is critical.

Triacs Replacement Considerations

Direct replacements must match the 800 V / 10 A rating and TO-220AB package. Verify equivalent gate trigger characteristics and thermal resistance values. Cross-reference with other high-reliability triac series from Littelfuse or alternative manufacturers offering identical pinouts and electrical limits.