QK012RH2

Triacs Overview

The Littelfuse QK012RH2 is a bidirectional triac belonging to the Qxx12xHx series, designed for high-voltage AC power control applications. It features a rated repetitive off-state voltage (VDRM) of 1 kV and an RMS on-state current (It RMS) of 12 A. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-220-2 package for surface mount or through-hole integration. Key electrical characteristics include a maximum holding current of 50 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 50 mA. The on-state voltage drop is specified at 1.6 V, with a non-repetitive peak on-state current capability of 110 A or 120 A depending on the specific datasheet variant.

Triacs Feature Summary

• High voltage blocking capability suitable for industrial AC switching
• Robust thermal performance across extended operating temperatures
• Standardized pinout configuration for easy PCB layout

Triacs Applications

• Industrial motor speed control systems
• Solid state relay modules
• AC power regulation circuits

Triacs Procurement Notes

Verify the exact suffix against the manufacturer's official datasheet to confirm pinout compatibility and specific electrical tolerances. Ensure the component meets RoHS compliance requirements for your target market. Cross-reference the part number with Littelfuse documentation to distinguish between similar variants in the Qxx12xHx family before procurement.

Triacs Selection Notes

Select this component when a 1 kV rating and 12 A continuous current are required in a TO-220-2 form factor. Consider the 50 mA gate drive requirement for circuit design. Compare with lower voltage variants if system constraints allow, but ensure the selected part meets the specific voltage isolation needs of the application.

Triacs Part Context

This triac is part of Littelfuse's Qxx12xHx series, which offers various voltage ratings including 600 V and 800 V options. The QK012RH2 specifically targets high-voltage applications requiring reliable AC switching. It shares common packaging and basic current handling characteristics with other members of the series, differing primarily in breakdown voltage specifications.

Triacs Replacement Considerations

Direct substitutes may include other 1 kV, 12 A triacs in TO-220 packages from Littelfuse or competitors. Verify pinout alignment and thermal resistance values. Check for equivalent gate sensitivity and holding current specifications to ensure circuit compatibility without redesign.