T1620T-8G-TR

Triacs Overview

The T1620T-8G-TR is a Snubberless Triac in the D²PAK surface-mount package, rated for 16 A RMS on-state current and 800 V repetitive peak off-state voltage. It supports a non-repetitive surge peak current of up to 126 A and operates within a junction temperature range of -40 °C to +150 °C. The device features a maximum gate trigger current of 20 mA and a holding current of 40 mA. It offers high static dV/dt immunity and improved dynamic turn-off commutation, allowing operation without an external snubber RC circuit under defined limits.

Triacs Feature Summary

• High static dV/dt provides strong immunity against false turn-on events.
• Enhanced dynamic turn-off commutation capability improves reliability in high-temperature environments.
• Extended thermal margin allows continuous operation at junction temperatures up to 150 °C.
• Non-insulated tab design ensures efficient heat dissipation and good thermal resistance.

Triacs Applications

• General purpose AC line load switching
• Motor control circuits
• Home appliances
• Heating systems
• Lighting controls

Triacs Procurement Notes

Verify the specific ordering code suffix when sourcing components. The '-TR' designation indicates tape and reel packaging with a base quantity of 1000 units, whereas the standard 'T1620T-8G' variant utilizes tube packaging. Confirm that the required delivery mode aligns with your manufacturing assembly processes before placing orders.

Triacs Selection Notes

Select this component for applications requiring high commutation capability where external snubber circuits are undesirable. Ensure the operating environment respects the 150 °C maximum junction temperature limit. Verify that the gate drive circuit can supply the specified 20 mA trigger current across the full operating temperature range to guarantee reliable switching.

Triacs Part Context

This part belongs to STMicroelectronics' T-Series of Snubberless Triacs, optimized for general-purpose AC switching. The T1620T-8G-TR specifically denotes the surface-mount D²PAK version supplied in tape and reel format. It shares core electrical characteristics with through-hole variants but differs in physical mounting and packaging logistics.

Triacs Replacement Considerations

Direct functional substitutes include other ST T-Series triacs such as the T1610T-8G or T1635T-8T, provided the package type and current ratings match the application requirements. Cross-vendor replacements must be evaluated for equivalent dV/dt and (dI/dt)c specifications to ensure snubberless compatibility.

Triacs FAQ

Can the T1620T-8G-TR operate without a snubber circuit?

Yes, the device is designed to function without an external snubber RC circuit, provided the operational limits defined in the datasheet regarding voltage and current rates are strictly respected.

What is the critical rate of rise of on-state current?

The critical rate of rise of on-state current, (dl/dt)c, is a minimum of 6 A/ms at a junction temperature of 125 °C and 4.5 A/ms at 150 °C when operated without a snubber.

How does the package affect thermal performance?

The D²PAK package features a non-insulated tab which provides good thermal resistance. The junction-to-case thermal resistance is typically 1.15 °C/W, facilitating effective heat transfer to the PCB copper pad.