BD680A

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Transistor Type:	PNP - Darlington
Current - Collector (Ic) (Max):	4A
Voltage - Collector Emitter Breakdown (Max):	80V
Vce Saturation (Max) @ Ib, Ic:	2.8V @ 40mA, 2A
Current - Collector Cutoff (Max):	500µA
DC Current Gain (hFE) (Min) @ Ic, Vce:	750 @ 2A, 3V
Power - Max:	40W
Frequency - Transition:	--
Operating Temperature:	150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-225AA, TO-126-3
Supplier Device Package:	SOT-32-3
Base Part Number:	BD680

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Introduction

BD680A is a single, NPN, silicon-based, mid-power, and high-speed small signal transistor. This device is highly efficient for various amplification, frequency control, and audio applications. It is well suited for use in Class-D audio amplifier stages, high performance switching circuits, RF and IF amplifying stages, and many other small signal applications.

Application Field of BD680A

BD680A is a commonly used bipolar transistor that is suitable for a wide range of applications. It is used in audio amplifiers, receivers, and many other radio circuits, especially those requiring high power. It is also used in switching circuits and other electronic control systems, including electrostatic water level detectors, frequency changers, and other frequency control circuits. It is also used in logic and Gates circuitry, due to its high-speed switching performance. It can be used in wirings and in many other electronic devices.

Working Principle of BD680A

BD680A is an NPN transistor, which means it is composed of three layers of either n-type or p-type semiconductor material. The layer at the center is made of p-type material, and the layers on either side are made of n-type material. The p-type layer is referred to as the base, while the two n-type layers are referred to as the collector and the emitter.The operation of the BD680A is based on the basic principles of transistors. It works by allowing electric charges to flow through it from the collector to the emitter, when potential is applied to the base. This current flow is controlled by the current going through the base, which is determined by the resistance of the circuit elements connected to it. By controlling the current flowing through the base, one can control the current flowing through the collector and emitter. In applications such as audio output stages, the BD680A can be used as a driver transistor to supply power to the loudspeakers. In this configuration, a voltage is applied to the base of the BD680A, which in turn increases the current flow from the collector to the emitter. This increase in current flow causes an increase in power output to the speakers.

Conclusion

The BD680A is a highly efficient transistor that is used in many different applications, including audio amplifiers, switching circuits, logic circuits, and power supplies. It is a mid-power and high-speed small signal transistor, and is widely used in audio amplifiers, receivers, electrostatic water level detectors, and other circuits. The operation of the BD680A is based on the principles of transistors and is controlled by the current flowing through its base. The current flow increases with the potential applied to its base, which causes an increase in power output for audio applications.

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