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2N3904

Name: 2N3904
Rating: 4.7 (12 reviews)

TRANS NPN 40V 0.2A TO92-3

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製造商。部分 #2N3904
包 TO-92-3
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規格

Package	Bulk
ProductStatus	Obsolete
TransistorType	NPN
Current-Collector(Ic)(Max)	200 mA
Voltage-CollectorEmitterBreakdown(Max)	40 V
VceSaturation(Max)@IbIc	200mV @ 5mA, 50mA
DCCurrentGain(hFE)(Min)@IcVce	100 @ 10mA, 1V
Power-Max	625 mW
Frequency-Transition	270MHz
OperatingTemperature	150°C (TJ)
MountingType	Through Hole
Package/Case	TO-226-3, TO-92-3 (TO-226AA)

概述

Description

The 2N3904 is a popular NPN bipolar junction transistor (BJT) widely used in electronic circuits for amplification and switching applications. It features a maximum collector current of 200 mA, a collector-emitter voltage (Vce) rating of 40 V, and a maximum power dissipation of 625 mW.
The transistor operates in three regions: cutoff (off state), active (amplification), and saturation (fully on). It is commonly used in low-power applications and is favored for its reliability and versatility.
The 2N3904's typical specifications include a current gain (hFE) ranging from 100 to 300, making it suitable for various circuit designs. Its small size and availability in through-hole and surface-mount packages contribute to its popularity among hobbyists and professionals alike.
Overall, the 2N3904 is an essential component in analog and digital circuits, serving functions such as signal amplification, switching, and digital logic.

Features

The 2N3904 is a popular NPN bipolar junction transistor (BJT) known for its versatility in various electronic applications. Key features include:
1. Type: NPN transistor.
2. Maximum Collector-Emitter Voltage (Vce): 40V, allowing for a wide range of applications.
3. Maximum Collector Current (Ic): 200mA, suitable for low-power switching and amplification.
4. Gain (hFE): High current gain, typically between 100 and 300, enabling efficient amplification.
5. Frequency: Transition frequency (ft) of about 250 MHz, making it suitable for RF applications.
6. Package Types: Available in TO-92 and other configurations, facilitating easy integration into circuits.
7. Temperature Range: Operates effectively within -55°C to +150°C, ensuring reliability in various environments.
8. Applications: Commonly used in signal amplification, switching, and general-purpose circuits.
Overall, the 2N3904 is favored for its reliability, ease of use, and performance in both analog and digital applications.

Package

The 2N3904 is commonly packaged in a TO-92 plastic package, which is a cylindrical, through-hole mount type. It may also be found in SMD (Surface Mount Device) forms like SOT-23.

Pinout

The 2N3904 is a NPN bipolar junction transistor (BJT) commonly used in electronic circuits. It has three pins, which serve the following functions:
1. Collector (C): The terminal through which the current flows out of the transistor.
2. Base (B): The control terminal that regulates the current flowing from the collector to the emitter. A small current at the base allows control of a larger current between the collector and emitter.
3. Emitter (E): The terminal through which the current enters the transistor.
In typical applications, the 2N3904 is used for switching and amplification purposes in low-power applications. It is known for its versatility and reliability in various electronic circuits.

Manufacturer

The 2N3904 is a bipolar junction transistor (BJT) that is widely manufactured by several companies, with one of the most notable being ON Semiconductor. Founded in 1999, ON Semiconductor is a multinational corporation specializing in semiconductor manufacturing. They provide a range of products, including discrete components, analog devices, and integrated circuits for various applications.
Other manufacturers of the 2N3904 include Texas Instruments, NXP Semiconductors, and Fairchild Semiconductor (now part of ON Semiconductor). These companies are primarily involved in the design, development, and production of semiconductor devices for use in electronics, automotive, industrial, and consumer applications. Overall, the 2N3904 is a widely available component due to its versatility and popularity in electronic circuit designs.

Application

The 2N3904 is a widely used NPN bipolar junction transistor favored for its versatility in various applications. Common areas include low-power amplification, signal switching, and interface circuits in consumer electronics. It is also utilized in audio devices, digital logic circuits, and as a driver for small loads such as LEDs and relays. Additionally, it serves in oscillator circuits and as a general-purpose transistor in hobbyist and educational projects.

Equivalent

The 2N3904 is a popular NPN bipolar junction transistor (BJT). Equivalent products include:
1. 2N2222
2. BC547
3. 2N4401
4. MPS2222
5. PN2222
These transistors can be used in similar applications, though specifications may vary slightly. Always check the datasheet for specific characteristics.