Q2004V3

Triacs Overview

The Littelfuse Q2004V3 is a Teccor brand triac designed for AC switching and phase control applications. It features a 200 V rated repetitive off-state voltage (VDRM) and supports an on-state RMS current (ITRMS) of 4 A. The device operates within a temperature range of -40°C to +125°C and utilizes a TO-220AB through-hole package. Key electrical parameters include a maximum holding current of 20 mA, a gate trigger voltage of 2 V, and a gate trigger current ranging from 10 mA to 25 mA. It exhibits an on-state voltage of 1.6 V and a non-repetitive peak on-state current capacity of 46 A or 55 A depending on pulse duration.

Triacs Feature Summary

• Integrated diac trigger mechanism eliminates the need for external discrete components in gate circuits.
• Electrically isolated TO-220 package provides 2500 V rms isolation between leads and mounting surface.
• Glass-passivated junctions ensure long-term parameter stability and device reliability.

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix against official Littelfuse documentation to confirm exact electrical tolerances and packaging options. Confirm RoHS compliance status and agency approvals such as UL or CSA before integration. Ensure the selected variant matches the required thermal management capabilities for the intended operating environment.

Triacs Selection Notes

Select this component for applications requiring integrated gate triggering to simplify circuit design. The 200 V rating suits low-voltage AC systems, while the 4 A current capacity handles moderate loads. Consider the TO-220 package for ease of heat sinking and high-voltage isolation requirements in industrial or consumer electronics.

Triacs Part Context

This part belongs to the QxxxxLTx series of Quadrac devices manufactured under the Teccor brand by Littelfuse. These devices combine a triac and a diac trigger in a single package to reduce assembly time and component count. The series offers voltage ratings up to 600 V and current capacities from 4 A to 15 A.

Triacs Replacement Considerations

Direct substitutes may include other Triacs with similar 4 A/200 V ratings and integrated triggers, such as those from STMicroelectronics or ON Semiconductor. Verify pinout compatibility and thermal resistance values when cross-referencing with alternative manufacturers' datasheets.