BTB08-800CW3G

Triacs Overview

The Littelfuse BTB08-800CW3G is a surface-mount Triac designed for AC power control applications. It features an RMS on-state current of 8 A and a repetitive peak off-state voltage of 800 V. The device utilizes a sensitive gate architecture with a maximum gate trigger current of 5 mA, enabling direct interface with low-power logic circuits. Packaged in a compact DPAK (TO-263) form factor, it supports through-hole mounting on printed circuit boards. The component operates within a junction temperature range of -40°C to +125°C and includes internal snubberless design characteristics suitable for inductive loads.

Triacs Feature Summary

• Sensitive gate structure allows direct drive from microcontrollers or CMOS logic without external buffer components
• Snubberless design capability reduces external component count and simplifies circuit layout for inductive loads
• Surface-mount DPAK package provides space-efficient integration onto PCBs while maintaining high thermal performance

Triacs Applications

• Solid state relays for industrial switching
• AC motor speed control circuits
• Lighting dimmer modules

Triacs Procurement Notes

Verify the specific manufacturer datasheet for the exact electrical limits and thermal resistance values associated with the DPAK package. Confirm that the sensitive gate specifications align with the driving circuit's output capabilities. Ensure proper derating of the 8 A current rating based on the expected ambient operating temperature and PCB copper area available for heat dissipation.

Triacs Selection Notes

Select this component when a surface-mount solution is required for 800 V AC switching applications. The 5 mA gate trigger current makes it suitable for low-power digital interfaces. Compare against standard TO-220 variants if higher thermal mass or screw-mount capability is necessary for the specific enclosure design constraints.

Triacs Part Context

This part belongs to the BTA/BTB08 family of Triacs produced by Littelfuse. The 'BTB' prefix indicates a surface-mount variant, while 'W3G' typically denotes the sensitive gate and snubberless characteristics. This series is widely used in consumer electronics and industrial controls requiring reliable AC phase control.

Triacs Replacement Considerations

Equivalent surface-mount Triacs include the STMicroelectronics BTB08-800CWRG and WeEn Semiconductors equivalents. Verify pinout compatibility and thermal pad configuration before substituting.