BT139-800G,127

Triacs Overview

The BT139-800G,127 is a glass passivated triac manufactured by WeEn Semiconductors, designed for surface mounting in a D2PAK (TO-263AB) package. It features an 800 V rated repetitive off-state voltage and supports a 16 A RMS on-state current. The device operates within a junction temperature range of -40 °C to +125 °C. Key electrical characteristics include a maximum holding current of 45 mA, a gate trigger voltage of 700 mV, and a gate trigger current of 22 mA. It exhibits a maximum on-state voltage of 1.2 V and a non-repetitive peak on-state current capability of 170 A.

Triacs Feature Summary

• Glass passivation provides protection against mechanical stress and chemical contamination.
• Logic level triggering allows direct drive from microcontrollers or logic circuits.
• Four-quadrant sensitivity ensures reliable gate triggering across all polarity combinations.

Triacs Applications

• Solid state relays
• Lighting control systems
• Motor speed controllers

Triacs Procurement Notes

Verify the specific suffix '127' against official manufacturer documentation to confirm tape and reel specifications. Ensure compatibility with standard SMD reflow soldering profiles for the D2PAK package. Cross-reference datasheets from WeEn Semiconductors to validate pinout and thermal resistance parameters before integration.

Triacs Selection Notes

Select this component when high current switching in a compact surface-mount form factor is required. The 800 V rating suits general AC mains applications. Verify that the 16 A RMS current capacity meets the load requirements and that the logic-level gate drive characteristics align with the control circuit's output capabilities.

Triacs Part Context

This part belongs to the BT139 series of four-quadrant logic level triacs. The series is characterized by robust construction suitable for industrial environments. The D2PAK package offers improved thermal performance compared to traditional through-hole alternatives, facilitating efficient heat dissipation in dense PCB layouts.

Triacs Replacement Considerations

Compatible substitutes include the BT139B-800 and BT139-800 variants from the same family. Verify that alternative parts maintain identical pin configurations and electrical ratings to ensure drop-in replacement without circuit modification.