BT137X-800E,127

Triacs Overview

The BT137X-800E,127 is a four-quadrant logic level triac manufactured by WeEn Semiconductors. It features an 8 A RMS on-state current and an 800 V repetitive peak off-state voltage rating. The device utilizes a sensitive gate structure for direct microcontroller interfacing. It is housed in a TO-220F (SOT78) plastic package designed for flange mounting. Key electrical parameters include a maximum holding current of 20 mA, a gate trigger voltage of 700 mV, and a gate trigger current of 30 mA. The component supports a non-repetitive surge current of 71 A and operates within a junction temperature range of -40°C to +125°C.

Triacs Feature Summary

• Four-quadrant sensitivity ensures reliable triggering across all gate polarities and main terminal voltages.
• Sensitive gate architecture allows direct interface with low-power logic circuits and microcontrollers.
• Planar passivated construction provides robust protection against mechanical stress and environmental factors.

Triacs Applications

• General purpose bidirectional switching
• Phase control applications
• Lighting dimmers

Triacs Procurement Notes

Verify the specific suffix '127' corresponds to the required tape and reel packaging configuration when sourcing. Confirm that the TO-220F package variant matches the thermal management requirements of the target design. Ensure compliance with RoHS directives if applicable to the final assembly standards.

Triacs Selection Notes

Select this component for applications requiring high voltage blocking capability combined with moderate current handling. The 800 V rating suits mains voltage applications. The logic-level gate sensitivity simplifies driver circuit design compared to standard gate devices. Verify thermal dissipation needs given the 8 A RMS rating and package type.

Triacs Part Context

This part belongs to the BT137X series of four-quadrant triacs from WeEn Semiconductors. The series is characterized by its sensitive gate technology and robust plastic encapsulation. Variants within the series typically differ by voltage ratings and package styles, serving general industrial and consumer electronics markets.

Triacs Replacement Considerations

Compatible substitutes include the BT137X-600E,127 for lower voltage applications, or the BT137S-800E,118 for surface mount DPAK implementations. Cross-reference datasheets to confirm pinout compatibility and thermal characteristics before substitution.

Triacs FAQ

What is the maximum gate trigger voltage for this device?

The maximum gate trigger voltage (Vgt) is specified as 700 mV.

Is this component suitable for direct microcontroller connection?

Yes, the sensitive gate design allows it to be interfaced directly with microcontrollers without additional drive circuitry.

What is the package type for the BT137X-800E,127?

It is supplied in a TO-220F (SOT78) plastic package intended for flange mounting.