Q8016LH352

Triacs Overview

The Littelfuse Q8016LH352 is a bidirectional triac designed for AC switching and phase control applications. It features an RMS on-state current of 16 A and a rated repetitive off-state voltage (VDRM) of 800 V. The device operates within a junction temperature range of -40°C to +125°C. Key electrical parameters include a maximum gate trigger voltage (VGT) of 1.3 V, a maximum gate trigger current (IGT) of 20 mA, and a maximum holding current (IH) of 35 mA. It utilizes a TO-220AB through-hole package with Main Terminal 2 connected to the case for mounting.

Triacs Feature Summary

• Integrated Diac Trigger: Includes a built-in diac trigger mechanism to simplify circuit design by eliminating the need for discrete external triggering components.
• Snubberless Operation: Engineered as an alternistor device that eliminates the requirement for external snubber networks in standard applications.
• High Voltage Isolation: Provides electrical isolation of 2500 V rms from the leads to the mounting surface, removing the need for separate insulators.

Triacs Applications

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

Triacs Procurement Notes

Verify the specific suffix '352' against official Littelfuse documentation to confirm pinout and electrical tolerances, as suffixes often denote specific manufacturing revisions or regional compliance variations. Ensure the ordering part number matches the exact datasheet revision required for your design to avoid functional discrepancies.

Triacs Selection Notes

Select this component when a compact, integrated solution for AC phase control is needed without external snubbers or discrete diacs. The 800 V rating suits general mains voltage applications, while the 16 A current capacity supports moderate power loads. Verify thermal management requirements for the TO-220 package based on the expected RMS current and ambient conditions.

Triacs Part Context

This device belongs to the QxxxxLTx series of Quadrac devices developed by Littelfuse. These are bidirectional AC switches that integrate a diac trigger within the same package as the triac. This integration reduces assembly time and cost compared to using separate gated triacs and discrete diacs.

Triacs Replacement Considerations

Compatible substitutes within the same family include Q8016LH3TP and Q8016LH4TP. Verify that the replacement part's gate trigger characteristics and package isolation ratings meet the original design specifications before substitution.