2N4939

Series:	--
Packaging:	Bulk
Part Status:	Obsolete
Transistor Type:	--
Current - Collector (Ic) (Max):	--
Voltage - Collector Emitter Breakdown (Max):	--
Vce Saturation (Max) @ Ib, Ic:	--
Current - Collector Cutoff (Max):	--
DC Current Gain (hFE) (Min) @ Ic, Vce:	--
Power - Max:	--
Frequency - Transition:	--
Operating Temperature:	--
Mounting Type:	Through Hole
Package / Case:	TO-78-6 Metal Can
Supplier Device Package:	TO-78-6

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Introduction

The 2N4939 is a bipolar junction transistor (BJT) array integrated circuit (IC) used in circuit applications for both amplification and switching. It is also referred to as an array amplifier, as it consists of four individual transistors connected in series and in parallel. It works by allowing electrical current or voltage to be used to manipulate the output.

Characteristics

The 2N4939 has four transistors and is designed to be mounted onto a printed circuit board (PCB). It has a collector to emitter voltage rating of 30V and a collector current of up to 4A. The maximum power dissipation of the 2N4939 is 1.6W. The device is designed to operate in the temperature range of -55 to +150°C.

Application Field

The 2N4939 is used in a variety of electronic circuits, including those for digital and analog signal processing, power supplies, automotive, and medical electronics. It is often employed to amplify small signals that require amplification or switching. The 2N4939 can be used to produce multiple analog outputs from a single input. It is also ideal for creating single output signals for use in motor and motor speed control, digital logic circuits, and power management applications. It can also be used for applications such as motor control, accelerometers, and vehicle diagnostics.

Working Principle

The 2N4939 works by allowing electrical current or voltage to be used to manipulate the output. It has four transistors connected in series and in parallel. When voltage or current is applied to the base of the transistor, the collector voltage decreases and the emitter voltage increases. This creates an inverted amplified signal which can be used to control the output. When more than one transistor is used in the circuit, it can be used to create analog output signals. An example of this would be an amplifier which uses multiple transistors to increase the gain of the signal. This can be used to boost the output of a weak signal.

Conclusion

The 2N4939 is a bipolar junction transistor array integrated circuit used for amplification and switching. It is often used in analog and digital signal processing, motor control, power supplies, automotive, and medical electronics applications. It is often used for creating analog output signals for use in motor and motor speed control, digital logic circuits, and power management applications. The 2N4939 works by allowing electrical current or voltage to be used to manipulate the output. When voltage or current is applied to the base of the transistor, the collector voltage decreases and the emitter voltage increases, creating an inverted amplified signal which can be used to control the output.

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