BT139X-800,127

Triacs Overview

The BT139X-800,127 is a glass passivated triac manufactured by WeEn Semiconductors, designed for high-performance AC switching applications. It operates in a TO-220FP-3 (TO-220F) through-hole package. The device features an RMS on-state current rating of 16 A and supports a non-repetitive peak on-state current of 170 A. It withstands a rated repetitive peak off-state voltage (VDRM) of 800 V with a maximum leakage current of 100 uA at this voltage. Key electrical parameters include a maximum on-state voltage of 1.7 V, a holding current of 45 mA, and gate trigger specifications of 1.5 V and 70 mA. The component is rated for operation up to +125°C.

Triacs Feature Summary

• Glass passivation provides environmental protection and reliability within the plastic envelope.
• High thermal performance capability suitable for power control applications.
• Robust surge handling with high non-repetitive peak current capacity.

Triacs Applications

• AC motor speed control systems
• Solid-state relays
• Industrial power regulation

Triacs Procurement Notes

Verify the specific suffix '127' against official manufacturer documentation to confirm packaging details and compliance status. Ensure the part number matches the exact voltage rating required for the circuit design. Cross-reference datasheets from authorized distributors to validate current availability and authenticity before procurement.

Triacs Selection Notes

Select this component when an 800 V blocking voltage and 16 A continuous current are required in a TO-220FP-3 package. Compare gate trigger requirements against the driving circuit capabilities, as the specified gate current may necessitate specific driver design. Consider thermal management solutions given the power dissipation characteristics at full load.

Triacs Part Context

This triac belongs to the BT139X series, which offers enhanced performance over standard variants. The BT139X-800 variant specifically targets higher voltage applications compared to the 600 V version. It serves as a direct replacement for legacy Philips/NXP BT139-800 devices in existing designs requiring equivalent electrical specifications.

Triacs Replacement Considerations

The BT139-800 is a confirmed historical equivalent from NXP/Philips. Verify pinout compatibility and thermal resistance values when substituting into existing PCB layouts to ensure proper heat sinking and electrical connection integrity.