T1635H-8G-TR

Triacs Overview

The T1635H-8G-TR is a high-temperature Triac from the H-Series, housed in a D²PAK package. It features an RMS on-state current of 16 A and a symmetrical blocking voltage of 800 V. The device supports a maximum junction temperature of 150 °C and utilizes ST Snubberless technology for robust commutation. Key electrical parameters include a gate trigger current (IGT) ranging from 5 mA to 35 mA, a static dV/dt immunity of at least 2000 V/µs, and a critical rate of turn-off commutation ((dl/dt)c) of 16 A/ms. It operates across three triggering quadrants.

Triacs Feature Summary

• Snubberless high temperature technology providing enhanced noise immunity and turn-off commutation up to maximum junction temperature.
• D²PAK package design enabling compact drive of heavy AC loads with reduced heatsink size requirements.
• Internal ceramic pad insulation rated at 2500 V RMS for safe operation in demanding environments.

Triacs Applications

• Home automation smart AC plugs
• Water heaters, room heaters, and coffee machines
• AC induction and universal motor control
• Inrush current limiting in AC-DC rectifiers
• Lighting and automation I/O control

Triacs Procurement Notes

Verify the specific ordering code T1635H-8G-TR against the manufacturer's datasheet DS13213 Rev 2 to confirm the tape and reel delivery mode. Ensure that the D²PAK package dimensions and thermal resistance values align with the target PCB footprint and cooling strategy. Cross-reference the ECOPACK2 compliance status and UL94-V0 flammability rating with local regulatory requirements before finalizing component selection.

Triacs Selection Notes

Select this component when designing circuits requiring 16 A continuous current handling at elevated temperatures up to 150 °C. The D²PAK package is suitable for surface mount applications where space constraints limit heatsink size. Consider the 800 V blocking voltage capability for standard AC line applications. Verify that the gate trigger current specifications match the driving circuit capabilities across all three triggering quadrants.

Triacs Part Context

This part belongs to the T1635H series of high-temperature Triacs manufactured by STMicroelectronics. The 'G' suffix indicates the D²PAK package, while 'TR' denotes the tape and reel packaging format. It shares core electrical characteristics with the tube-packaged T1635H-8G variant but differs in delivery method. The series is designed for industrial control and home appliance applications requiring robust performance under harsh conditions.

Triacs Replacement Considerations

The T1635H-8G (tube version) is the direct functional equivalent with identical electrical ratings and pinout. Other variants within the T1635H family may offer different current ratings or voltage levels but require verification of package compatibility and thermal performance before substitution.

Triacs FAQ

What is the maximum non-repetitive surge peak on-state current?

The T1635H-8G-TR can withstand a non-repetitive surge peak on-state current of 168 A for a 16.7 ms pulse width and 160 A for a 20 ms pulse width, assuming an initial junction temperature of 25 °C.

How does the device handle dynamic turn-off commutation?

Based on ST Snubberless technology, the device offers a minimum critical rate of turn-off commutation ((dl/dt)c) of 16 A/ms at a junction temperature of 150 °C without requiring an external snubber network.

What are the thermal resistance characteristics of the D²PAK package?

The junction-to-case thermal resistance (Rth(j-c)) has a maximum value of 1.1 °C/W. The junction-to-ambient thermal resistance (Rth(j-a)) is typically 45 °C/W when mounted on a FR4 PCB with a 2 cm² copper pad under the tab.