PN3643_D27Z

Series:	--
Packaging:	Tape & Reel (TR)
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	500mA
Voltage - Collector Emitter Breakdown (Max):	30V
Vce Saturation (Max) @ Ib, Ic:	220mV @ 15mA, 150mA
Current - Collector Cutoff (Max):	50nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	100 @ 150mA, 10V
Power - Max:	625mW
Frequency - Transition:	--
Operating Temperature:	-55°C ~ 150°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-226-3, TO-92-3 (TO-226AA) (Formed Leads)
Supplier Device Package:	TO-92-3
Base Part Number:	PN3643

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PN3643_D27Z Application Field and Working Principle

PN3643_D27Z is a type of transistor commonly categorized as a bipolar junction transistor (BJT), which is a specific type of semiconductor device. It is constructed of a semiconductor material with at least three terminals for connection to an external circuit. The BJT is a combination of three layers of doped semiconductor material, known as the emitter, base, and collector.The principal factor governing the operation of a BJT is the nature of the electrical charges that are held by the layers of semiconductor material. These layers are individually doped with ions of an element such as boron or phosphorus, to create an electrical field that directs current flow between the base and the collector when current is present. The base-collector junction creates a “saturated” or “fully open” region, where the current flow is controllable.PN3643_D27Z can be used in a variety of applications due to its multiple base-collector junction potential. It is often applied as a switch, allowing current to pass through it depending on the amount of current in the base. This makes it possible to use the transistor as a timer or a switch in an electrical circuit. As the current in the base increases, the current in the collector increases and the voltage in the base-collector junction drops.The PN3643_D27Z can also be used in analog circuits, where it functions as an amplifier by converting an input current into a proportionally large output voltage. This is due to the varying current amplification factor (beta) of the device. The beta of a bipolar transistor is dependent on the current level in the base, which results in an amplified output voltage.The PN3643_D27Z can also be used as an audio amplifier, where its high transconductance allows for a large current swing from a small input current level. This means that the amplifier is able to generate a large output current from a low input voltage.Finally, the PN3643_D27Z can be used as a voltage regulator. It does this by controlling the current flowing through the output stage of the regulator in order to maintain the output voltage level. The regulator uses the PN3643_D27Z to compare the input and output voltages, then actuates to maintain the output voltage level by changing the current through the output stage.In summary, the PN3643_D27Z is a type of bipolar junction transistor (BJT) that can be used for switching and amplifying electrical signals. It can convert an input current into a proportionally large output voltage due to the varying current amplification factor, and can also be used as a voltage regulator. It is thus a versatile and reliable device for use in a variety of electrical circuits.

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