BTB08-400CRG

Triacs Overview

The BTB08-400CRG is a bidirectional triac switch manufactured by STMicroelectronics, designed for general-purpose AC switching applications. It features an RMS on-state current rating of 8 A and a repetitive peak off-state voltage (VDRM) of 400 V. The device operates within a junction temperature range of -40°C to +125°C and utilizes a TO-220AB through-hole package. Key electrical characteristics include a maximum holding current of 25 mA, a gate trigger voltage of 1.3 V, and a gate trigger current of 50 mA. The non-repetitive peak on-state current is rated at 80 A, with an on-state voltage of 1.55 V and a leakage current of 5 µA.

Triacs Feature Summary

• Logic-level triggering capability allows direct interface with low-power drivers such as microcontrollers.
• Snubberless design provides high commutation performance, making it suitable for inductive loads.

Triacs Applications

• Static relays
• Heating regulation systems
• Induction motor starting circuits
• Phase control operation in light dimmers
• Motor speed controllers

Triacs Procurement Notes

Verify the specific suffix 'CRG' against official STMicroelectronics documentation to confirm compliance with RoHS directives and packaging details. Ensure the selected component matches the required voltage rating for the target AC circuit. Cross-reference datasheet parameters with system requirements before finalizing procurement orders.

Triacs Selection Notes

Select this component when an 8 A RMS current capacity and 400 V blocking voltage are sufficient for the application. Consider the TO-220AB package for through-hole mounting requirements. Evaluate thermal management needs based on the 125°C maximum junction temperature limit and expected load conditions.

Triacs Part Context

This part belongs to the BTB08 series of standard and Snubberless triacs from STMicroelectronics. The series offers devices in both through-hole and surface-mount packages. Variants within the series differ primarily in voltage ratings, which range from 600 V to 800 V, while maintaining similar current handling capabilities.

Triacs Replacement Considerations

Check for other BTB08 variants with different voltage ratings if higher blocking voltage is needed. Verify pinout compatibility with existing PCB layouts when substituting with equivalent triacs from other manufacturers.

Triacs FAQ

What is the maximum holding current for the BTB08-400CRG?

The maximum holding current (Ih) is 25 mA.

Is the BTB08-400CRG suitable for inductive loads?

Yes, the Snubberless versions in the BTB08 series are specially recommended for use on inductive loads due to their high commutation performance.

What is the gate trigger current specification?

The gate trigger current (Igt) is specified as 50 mA.