BTB08-400BRG

Triacs Overview

The BTB08-400BRG is a general-purpose Triac from STMicroelectronics, rated for 8 A RMS on-state current and 400 V repetitive peak off-state voltage. It utilizes the Snubberless™ technology to ensure high commutation performance with inductive loads without requiring external RC snubber circuits. The device operates within a junction temperature range of -40°C to +125°C and features a maximum gate trigger current of 50 mA. Packaged in a TO-220AB through-hole housing, it provides reliable AC switching capabilities for various power control applications.

Triacs Feature Summary

• Snubberless™ technology enables direct operation with inductive loads by eliminating the need for external RC snubber networks.
• Logic-level gate sensitivity allows for direct interfacing with low-power drivers such as microcontrollers.
• High thermal stability supports continuous operation up to a maximum junction temperature of 125°C.

Triacs Applications

• Static relays and solid-state switching
• Heating regulation systems
• Induction motor starting circuits
• Phase control for light dimmers

Triacs Procurement Notes

Verify the specific voltage rating suffix (e.g., 400V vs 600V) against the official datasheet before procurement. Confirm that the TO-220AB package dimensions match the mechanical constraints of the target assembly. Ensure the gate trigger characteristics align with the driving circuit's output capabilities to guarantee reliable turn-on under all operating conditions.

Triacs Selection Notes

Select this component when an 8 A RMS current capacity and 400 V blocking voltage are required for AC load control. The Snubberless feature makes it suitable for inductive loads where standard Triacs would require additional protection components. Consider the TO-220AB package for applications requiring heatsinking or through-hole mounting on printed circuit boards.

Triacs Part Context

This part belongs to the BTB08 series of general-purpose Triacs manufactured by STMicroelectronics. The series includes variants with different voltage ratings, such as the BTB08-600BRG and BTB08-800BRG, offering flexibility for different line voltage requirements while maintaining consistent current handling and packaging standards.

Triacs Replacement Considerations

The BTB08-600BRG serves as a higher-voltage alternative within the same series. Other compatible replacements include the BTA08 series for surface-mount options or equivalent Triacs from other manufacturers with matching 8A/400V specifications and TO-220 packages.