ZTX618 Discrete Semiconductor Products

Series:	--
Packaging:	Bulk
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	3.5A
Voltage - Collector Emitter Breakdown (Max):	20V
Vce Saturation (Max) @ Ib, Ic:	255mV @ 50mA, 3.5A
Current - Collector Cutoff (Max):	100nA
DC Current Gain (hFE) (Min) @ Ic, Vce:	300 @ 200mA, 2V
Power - Max:	1W
Frequency - Transition:	140MHz
Operating Temperature:	-55°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	E-Line-3
Supplier Device Package:	E-Line (TO-92 compatible)
Base Part Number:	ZTX618

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Introduction:The ZTX618 is a type of single bipolar junction transistor (BJT) which is widely used in a variety of applications due to its high performance and reliable operation. This type of transistor is most commonly used in digital circuits because its high gain characteristics make it suitable for switching applications. The following article will explain the working principle of the transistor, its applications and key features. Working Principle of ZTX618 The ZTX618 is a three-terminal device consisting of an emitter, a base and a collector. It is a NPN type BJT and can be regarded as a pair of PN junction connected together in the form of an inverted triangle. The two junctions, known as the base-emitter and the base-collector junctions are the most important parts of the transistor. The base-emitter junction is forward biased, meaning that the positive terminal of the supply is connected to the base, while the negative terminal of the supply is connected to the emitter. As current flows through the base-emitter junction, it activates the transistor and results in the formation of minority charge carriers which in turn causes the collector circuit to become active. This is known as the importance principle which states that current at the base controls current at the collector.The base-collector junction is reverse biased, which mens that current flows from collector to base, while the emitter is connected to ground. It is this junction which is responsible for controlling the amount of current in the collector circuit. The base current can be controlled by changing its value which in turn affects the amount of current in the collector circuit. Applications of ZTX618 Due to its high gain characteristics, the ZTX618 is suitable for amplifier, oscillator and switching applications. It is mostly used in digital circuits because of its fast switching times and low power consumption. The transistor can be used as a buffer, driver and amplifier in a wide range of logic circuits.The transistor is also used in power supplies, voltage regulators and solar panel regulators. It can be used to control the flow of electricity in a circuit by acting as a switch. This means that the current flow can be turned on and off depending on the circuit requirements. Moreover, the ZTX618 can be used to protect sensitive circuits from overvoltage or overcurrent. Key Features of ZTX618 The ZTX618 features a wide range of advantages including high current gain and wide operating temperature range. It has a low forward voltage drop and can operate in both low and high voltages. The transistor can also operate in both AC and DC currents and is capable of handling high power devices. Moreover, the ZTX618 features a high switching speed of up to 2MHz. In conclusion, the ZTX618 is a type of single bipolar junction transistor (BJT) which is widely used in a variety of applications due to its high performance and reliable operation. It has a wide range of advantages including high current gain, wide operating temperature range, low forward voltage drop and high switching speed. The transistor can be used in digital circuits as well as power supplies, voltage regulators and solar panel regulators.

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