BT139B-800E,118

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Active
Triac Type:	Logic - Sensitive Gate
Voltage - Off State:	800V
Current - On State (It (RMS)) (Max):	16A
Voltage - Gate Trigger (Vgt) (Max):	1.5V
Current - Non Rep. Surge 50, 60Hz (Itsm):	155A, 170A
Current - Gate Trigger (Igt) (Max):	10mA
Current - Hold (Ih) (Max):	45mA
Configuration:	Single
Operating Temperature:	125°C (TJ)
Mounting Type:	Surface Mount
Package / Case:	TO-263-3, D²Pak (2 Leads + Tab), TO-263AB
Supplier Device Package:	D2PAK
Base Part Number:	BT139

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Introduction

Thyristors are a type of semiconductor that are used to control electric power and are used as switches in AC and DC circuit designs. TRIACs, or TRIode AC Switch, is a subcategory of Thyristors and are used for switching AC power. The BT139B-800E,118 is a general purpose TRIAC gate thyristor belonging to the BT139 family of thyristors. This article will discuss the applications of the BT139B-800E,118 and how it works.

Applications

The BT139B-800E,118 is a versatile device and can be used in many different applications. It is usually used as a power switch in AC power supplies and inverters, and it can be used as a rectifier in motor and heater controls. It can also be used as a starter on light dimmers, controlling the speed of an electric motor, and in lamp modulators. The BT139B-800E,118 has a wide range of applications in the industrial world. It is capable of switching very high currents and voltages, which makes it perfect for industrial applications such as welding and plasma cutting. Other applications in the industrial world include AC motor control, AC inverters, heating and cooling control, and lighting and dimmer control.

Working Principle

The BT139B-800E,118 is a three-terminal thyristor, meaning it has three terminals for controlling the flow of current. The three terminals are the anode, the gate, and the cathode. The BT139B-800E,118 uses a positive voltage on the gate terminal to turn on the thyristor. When the voltage is applied, the thyristor will become conductive and will draw current from the anode and through the device to the cathode. The device will remain in this on-state as long as the voltage is applied to it. When the voltage on the gate terminal is reduced or removed, the device will become non-conductive again, shutting off the flow of current. The BT139B-800E,118 has a high peak blocking voltage and a high peak blocking current, which makes it well suited for use in AC power supplies, inverters, and motor controls.

Conclusion

The BT139B-800E,118 is a general-purpose TRIAC gate thyristor and is well suited for use in AC power supplies, inverters, lamp modulators, heating and cooling systems, motor controls, and light dimmers. It has three terminals, the anode, the gate, and the cathode, and it is activated by applying a positive voltage to the gate terminal. The BT139B-800E,118 has a high blocking voltage and current, making it perfect for switching very high currents and voltages.

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