Спецификации
| Атрибут | Ценность |
| Package / Case | Bulk |
| Part Status | Obsolete |
| Transistor Type | NPN |
| Current - Collector(Ic)(Max) | 200 mA |
| Voltage - Collector Emitter Breakdown(Max) | 40 V |
| Vce Saturation(Max) @ Ib Ic | 200mV @ 5mA, 50mA |
| DC Current Gain(h FE)(Min) @ Ic Vce | 100 @ 10mA, 1V |
| Power - Max | 625 mW |
| Frequency - Transition | 270MHz |
| Operating Temperature | 150°C (TJ) |
| Mounting Type | Through Hole |
Обзор
Description
The 2N3904 is a widely-used NPN bipolar junction transistor (BJT) known for its versatility and reliability in electronic circuits. It is typically used for amplification and switching applications. The transistor can handle a maximum collector current (Ic) of 200 mA and a collector-emitter voltage (Vce) of up to 40V, making it suitable for low to medium power tasks.
Key specifications include a gain (hFE) typically ranging from 100 to 300, which is adequate for many amplification needs. The 2N3904 has three terminals: the emitter, base, and collector. In operation, a small current at the base controls a larger current flow between the collector and emitter, facilitating its use as a current amplifier or switch.
The transistor is housed in a standard TO-92 package, making it easy to integrate into breadboards and circuit boards. Its widespread availability and low cost make the 2N3904 a staple in educational settings and hobbyist projects, as well as in professional electronic design.
Key specifications include a gain (hFE) typically ranging from 100 to 300, which is adequate for many amplification needs. The 2N3904 has three terminals: the emitter, base, and collector. In operation, a small current at the base controls a larger current flow between the collector and emitter, facilitating its use as a current amplifier or switch.
The transistor is housed in a standard TO-92 package, making it easy to integrate into breadboards and circuit boards. Its widespread availability and low cost make the 2N3904 a staple in educational settings and hobbyist projects, as well as in professional electronic design.
Equivalent
The 2N3904 is a general-purpose NPN bipolar junction transistor. Equivalent products include the BC547, 2N2222 PN2222, and MPS650. Each of these transistors can generally be used in similar applications, such as switching and amplifying, with comparable performance characteristics. However, always check the specific datasheets for differences in parameters like current gain, voltage ratings, and package type to ensure compatibility with your application.
Features
The 2N3904 is a popular NPN bipolar junction transistor (BJT) used in various electronic applications. Key features include:
1. Type: NPN
2. Polarity: NPN
3. Maximum Collector-Emitter Voltage (V_CE): 40V
4. Maximum Collector-Base Voltage (V_CB): 60V
5. Maximum Emitter-Base Voltage (V_EB): 6V
6. Maximum Collector Current (I_C): 200mA
7. Power Dissipation: 625mW
8. Transition Frequency (f_T): Typically 250 MHz
9. DC Current Gain (h_FE): Typically ranges from 100 to 300
10. Package Type: TO-92
The 2N3904 is widely used for switching and amplification purposes in low-power electronic circuits. Its popularity stems from its reliable performance, ease of use, and availability. It can be utilized in digital circuits, signal amplification, switching applications, and is ideal for educational purposes. Its TO-92 package makes it suitable for through-hole applications.
1. Type: NPN
2. Polarity: NPN
3. Maximum Collector-Emitter Voltage (V_CE): 40V
4. Maximum Collector-Base Voltage (V_CB): 60V
5. Maximum Emitter-Base Voltage (V_EB): 6V
6. Maximum Collector Current (I_C): 200mA
7. Power Dissipation: 625mW
8. Transition Frequency (f_T): Typically 250 MHz
9. DC Current Gain (h_FE): Typically ranges from 100 to 300
10. Package Type: TO-92
The 2N3904 is widely used for switching and amplification purposes in low-power electronic circuits. Its popularity stems from its reliable performance, ease of use, and availability. It can be utilized in digital circuits, signal amplification, switching applications, and is ideal for educational purposes. Its TO-92 package makes it suitable for through-hole applications.
Pinout
The 2N3904 is a widely used NPN bipolar junction transistor (BJT) that has three pins: the emitter, base, and collector.
1. Pin Count: It has three pins.
- Pin 1: Emitter
- Pin 2: Base
- Pin 3: Collector
2. Functions:
- Emitter (E): The emitter is heavily doped and emits electrons into the base region. It is usually connected to the ground or the negative side of the power supply in common emitter configurations.
- Base (B): The base is lightly doped and is responsible for activating the transistor. A small current at the base allows a larger current to flow from collector to emitter.
- Collector (C): The collector collects electrons from the base. It is usually connected to the load and is responsible for the main current flow through the transistor.
The 2N3904 is primarily used for amplification and switching applications due to its reliability and effectiveness at low current, low power, medium voltage, and moderate speed operations.
1. Pin Count: It has three pins.
- Pin 1: Emitter
- Pin 2: Base
- Pin 3: Collector
2. Functions:
- Emitter (E): The emitter is heavily doped and emits electrons into the base region. It is usually connected to the ground or the negative side of the power supply in common emitter configurations.
- Base (B): The base is lightly doped and is responsible for activating the transistor. A small current at the base allows a larger current to flow from collector to emitter.
- Collector (C): The collector collects electrons from the base. It is usually connected to the load and is responsible for the main current flow through the transistor.
The 2N3904 is primarily used for amplification and switching applications due to its reliability and effectiveness at low current, low power, medium voltage, and moderate speed operations.
Manufacturer
The 2N3904 is a widely used NPN bipolar junction transistor. Since it is a standardized component, it is manufactured by multiple semiconductor companies rather than a single manufacturer. Notable companies that produce the 2N3904 include ON Semiconductor, Fairchild Semiconductor (now part of ON Semiconductor), Texas Instruments, and Nexperia, among others.
These companies are typically categorized as semiconductor companies. They specialize in designing and manufacturing semiconductors, integrated circuits, and various electronic components used in a wide array of applications such as consumer electronics, automotive, industrial, and telecommunications. Semiconductor companies play a crucial role in the electronics industry by providing essential components that enable the functioning of electronic devices and systems.
These companies are typically categorized as semiconductor companies. They specialize in designing and manufacturing semiconductors, integrated circuits, and various electronic components used in a wide array of applications such as consumer electronics, automotive, industrial, and telecommunications. Semiconductor companies play a crucial role in the electronics industry by providing essential components that enable the functioning of electronic devices and systems.
Application
The 2N3904 is a widely used NPN bipolar junction transistor (BJT) suitable for various applications. Its primary applications include amplification and switching. It's commonly used in low-power audio amplification, signal amplification, and radio frequency circuits. In switching applications, it can control small loads such as LEDs and relays. The 2N3904 can also be found in oscillator circuits, pulse-width modulation (PWM) circuits, and general-purpose switching tasks in hobby and educational electronics projects. Its low cost, moderate gain, and ease of use make it a popular choice for prototyping and educational purposes.
Package
The 2N3904 is a widely-used NPN bipolar junction transistor (BJT) typically found in a TO-92 package. The TO-92 is a small, plastic-encapsulated package with three leads, commonly used for low-power, general-purpose applications.
