PN3646_D74Z

Series:	--
Packaging:	Tape & Box (TB)
Part Status:	Obsolete
Transistor Type:	NPN
Current - Collector (Ic) (Max):	300mA
Voltage - Collector Emitter Breakdown (Max):	15V
Vce Saturation (Max) @ Ib, Ic:	500mV @ 3mA, 300mA
Current - Collector Cutoff (Max):	500nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	30 @ 30mA, 400mV
Power - Max:	350mW
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:	PN3646

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PN3646_D74Z Application Field and Working Principle

PN3646_D74Z is a type of bipolar junction transistor (BJT) belonging to the single category. Bipolar junction transistors are three-terminal semiconductor devices formed by the junction of two different types of doped semiconductors, known as n-type and p-type. PN3646_D74Z transistors are mainly used to amplify electric signals.A typical PN3646_D74Z consists of three terminals labelled base (B), collector (C) and emitter (E). The layout of the different terminals gets its name from the direction of the flow of current between them. For example, electrons flow in the direction from emitter to collector and holes, the lack of electron which are positively charged, flow from the collector to the emitter.PN3646_D74Z transistors operate by utilizing a small current in the base-to-emitter junction that is amplified by a much larger collector-to-emitter current. When a voltage is applied to the base terminal, electrons flow from the emitter to the base, creating a small current that is amplified to a much larger current by the collector. This effect is known as current amplification and it is how PN3646_D74Z transistors can be used to amplify electric signals.PN3646_D74Zs are well suited for applications where large currents, such as those found in motors and other power demanding applications, need to be switched on and off. Since the voltage drop across the collector-to-emitter junction is relatively small compared to the voltage drop across the base-to-emitter junction, PN3646_D74Z transistors can be used to switch large currents using a relatively small voltage.PN3646_D74Zs are also commonly used in audio amplifiers. By connecting up multiple transistors in a circuit, it is possible to amplify audio signals efficiently. PN3646_D74Z transistors are particularly well suited for high power applications, as they are capable of withstanding large collector currents and have low saturation voltages that allow for better signal quality.In addition to power electronics and audio amplifiers, PN3646_D74Z transistors are also found in many different applications, such as computers, medical equipment, and communications equipment. This is due to their low cost, small size, and good performance in a wide range of applications.Finally, PN3646_D74Z transistors are relatively easy to use since they require only a small voltage to be applied to the base terminal in order to operate. This makes them well suited for use in applications such as switching motors and other large loads.Overall, PN3646_D74Z transistors are a versatile type of transistor that can be used in a wide range of applications. With their low cost and high performance, they are commonly used in a variety of electronics, such as audio amplifiers, computers, and communications equipment. Their ability to switch large currents using a small voltage makes them ideal for use in power electronics, while their small size and low saturation voltage make them well suited for use in small form factor audio applications.

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