Q2010LT

Triacs Overview

The Littelfuse Q2010LT is a Quadrac device belonging to the Teccor brand series, integrating a triac and an internal diac trigger within a single package. This bidirectional AC switch is gate-controlled for either polarity of main terminal voltage. The component features glass-passivated junctions to ensure long-term reliability and parameter stability. It operates with a continuous on-state current (Itrms) of 4A and supports voltage ranges up to 600V. The device is housed in a TO-220 package, which provides electrical isolation of 2500V rms from the leads to the mounting surface, eliminating the need for external insulators.

Triacs Feature Summary

• Integrates a triac and diac trigger in one package to reduce assembly time and cost
• Bidirectional AC switching capability controlled by gate signal for either main terminal voltage polarity
• Glass-passivated junctions ensure device reliability and parameter stability over time
• TO-220 package offers built-in electrical isolation without requiring separate insulators

Triacs Applications

• AC speed controls
• Temperature modulation controls
• Lighting controls requiring noise immunity

Triacs Procurement Notes

Verify the specific part number suffix against official Littelfuse documentation to confirm exact voltage and current ratings. Ensure the TO-220 package variant matches the required isolation specifications for the target application. Cross-reference agency approvals if regulatory compliance is mandatory for the end product.

Triacs Selection Notes

Select this component when phase control or AC switching is required with high noise immunity. The integrated diac simplifies circuit design by removing discrete components. Consider the 2500V rms isolation of the TO-220 package for applications where hot tab devices would require additional insulation steps.

Triacs Part Context

This device is part of the QxxxxLTx series developed by Littelfuse under the Teccor brand. It serves as a consolidated solution for AC power control, replacing the traditional combination of a discrete triac and diac. The series covers various current and voltage ratings to suit different power levels in industrial and consumer electronics.

Triacs Replacement Considerations

Direct substitutes must be verified through official Littelfuse cross-reference tools. Generic triacs do not include the internal diac and will require external triggering circuits. Ensure any replacement maintains the same package type and isolation rating.