T1635T-8I

Overview

The T1635T-8I is a Snubberless™ 16 A Triac available in the TO220AB-Ins. package, which features ceramic insulation. It serves as an on/off or phase angle function controller for general purpose AC switching applications. The device provides tab insulation rated at 2500 V rms and is UL certified under reference file E81734. Designed for high static and dynamic commutation, it operates across three quadrants. The component complies with RoHS directives (2002/95/EC) and allows operation without external snubber networks when datasheet limits are respected.

Feature Summary

• Snubberless design capability eliminates the need for external RC networks within specified limits
• TO220AB-Insulated package with built-in ceramic pad providing 2500 V rms isolation
• High static dV/dt and high dynamic turn-off commutation performance
• UL certification for safety compliance

Applications

• On/off control in general purpose AC switching
• Phase angle function controllers
• AC load driving requiring high commutation capability

Procurement Notes

Verify the specific ordering suffix to confirm the insulated package variant. Confirm RoHS compliance status through official documentation. Ensure the application respects the thermal and electrical limits required for snubberless operation. Check for any product change notifications affecting the manufacturing process or specifications before finalizing procurement.

Selection Notes

Select this component when high commutation capability is required in general purpose AC switching. The TO220AB-Ins. package is suitable for applications needing galvanic isolation between the heatsink and the circuit. Consider the three-quadrant triggering characteristics for gate drive compatibility. Verify that the system can operate within the defined limits to utilize the snubberless feature effectively.

Part Context

The T1635T-8I belongs to the T1635 series of Triacs manufactured by STMicroelectronics. It shares the Snubberless technology with other variants like the T1635H-8I and T1635T-8G. The 'T' designation typically indicates the through-hole TO220AB insulated package configuration. This series is designed for robust performance in demanding AC control environments.

Replacement Considerations

The T1635T-8G offers similar electrical characteristics but utilizes a surface-mount D2PAK package instead of the through-hole TO220AB-Ins. configuration. Designers must account for the difference in mounting style and thermal management requirements when substituting these parts.