JANTX2N3902

Series:	Military, MIL-PRF-19500/371
Packaging:	Bulk
Part Status:	Active
Transistor Type:	NPN
Current - Collector (Ic) (Max):	3.5A
Voltage - Collector Emitter Breakdown (Max):	400V
Vce Saturation (Max) @ Ib, Ic:	2.5V @ 700mA, 3.5A
Current - Collector Cutoff (Max):	250µA
DC Current Gain (hFE) (Min) @ Ic, Vce:	30 @ 1A, 5V
Power - Max:	5W
Frequency - Transition:	--
Operating Temperature:	-65°C ~ 200°C (TJ)
Mounting Type:	Through Hole
Package / Case:	TO-204AA, TO-3
Supplier Device Package:	TO-204AA (TO-3)

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Introduction

Jantx2N3902 is a NPN small signal silicon epitaxial transistor designed for a variety of applications. It is a kind of bipolar junction transistor (BJT), meaning that two junctions between two types of semiconductors have formed, forming a type of symmetry. Since it has two junctions and is made of a solid-state material, it can offer and take a lot of current within a very small area. In other words, it can be used for controlling and amplifying small currents. It also plays an important role in many applications, from digital signals to analog ones.

Application Field

Jantx2N3902 can be applied in various fields. It is commonly used in communications, such as in wireless routers for data transmission. Recently it can also be used in robotics, as a controller for electric vehicles, automated assembly systems, and more. Additionally, it is widely used in consumer appliances, such as ID tags, smart phone, and even home security systems.It is also used in medical fields. For example, it is employed in medical testing equipment, such as detectors, amplifiers, and RF detectors. Additionally, it can be used in bio-sensors, as it can distinguish different levels of electric potentials within a certain range. Thus, it can detect patterns and defects within the human body. Another field where the Jantx2N3902 is employed is electricity. It is used in power supplies to regulate and stabilize incoming currents; it is also used for electrical motors, power systems, and so on. It can also be used in circuit breakers or fuse boxes, protecting us from overheating and electric short circuit.

Working Principle

Jantx2N3902 works on the basis of basic semiconductor physics. It is made of a semiconductor material, usually silicon or germanium, with a base or collector serving as a bridge between these two. As with most semiconductor materials, the base voltage determines the amount of current that flows through the device. When the base is at a certain voltage, the current flowing through the device will be close to zero. But when the voltage reaches a certain value, current will be allowed to flow in the two other electrodes. This is of course dependent on the voltage in each of the electrodes, which can be determined by the exact type of silicon used. The junction between the two semiconductor materials, the P-type and N-type, is called a "gate". This is because the voltage at each side of the gate can be used to control the current that flows in the device\'s direction. In this way, the Jantx2N3902 can be used to regulate and amplify current depending on the voltage supplied to it.

Conclusion

Jantx2N3902 is a type of bipolar junction transistor (BJT) designed for many applications that are not only applicable to digital signals but also analog ones. It is frequently used in signal communications, robotics, medical, electrical, and many more. Its working principle is based on basic semiconductor physics, using two junctions to make and take a certain amount of current depending on the supplied voltage.

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