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2N2905A

Name: 2N2905A
Rating: 4.7 (12 reviews)

TRANS PNP 60V 0.6A TO39

Производитель
Мфр. Часть #2N2905A
Пакет TO-205AD, TO-39-3 Metal Can
Лист данных 2N2905A DataSheet
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Спецификации

Supplier	STMicroelectronics
Package	Tube
ProductStatus	Obsolete
TransistorType	PNP
Current-Collector(Ic)(Max)	600 mA
Voltage-CollectorEmitterBreakdown(Max)	60 V
VceSaturation(Max)@IbIc	1.6V @ 50mA, 500mA
Current-CollectorCutoff(Max)	10nA (ICBO)
DCCurrentGain(hFE)(Min)@IcVce	100 @ 150mA, 10V
Power-Max	600 mW
Frequency-Transition	200MHz
OperatingTemperature	175°C (TJ)
MountingType	Through Hole
Package/Case	TO-205AD, TO-39-3 Metal Can

Обзор

Description

The 2N2905A is a widely used NPN bipolar junction transistor (BJT) known for its versatility in various electronic applications. It is primarily used for amplification and switching purposes in electronic circuits. The transistor features a maximum collector current of 600 mA and a maximum collector-emitter voltage (Vce) of 40 V, making it suitable for medium power applications.
Key specifications include a current gain (hFE) range of 100 to 300, which makes it effective in signal amplification. The 2N2905A is often found in audio electronics, power supplies, and as a switch in digital circuits. Its package type is typically TO-92, allowing for easy mounting on printed circuit boards (PCBs).
The transistor’s ability to switch rapidly and handle moderate power levels makes it ideal for both hobbyist and professional applications. Overall, the 2N2905A is a reliable component in the realm of electronic design, favored for its performance and availability.

Features

The 2N2905A is a popular NPN bipolar junction transistor (BJT) used for general-purpose amplification and switching. Key features include:
- Maximum Collector-Emitter Voltage (Vce): 40V, allowing for use in various applications.
- Maximum Collector Current (Ic): 600mA, suitable for moderate power applications.
- Gain (hFE): Typically between 100 to 300, providing efficient signal amplification.
- Transition Frequency (fT): Approximately 250 MHz, enabling its use in high-frequency applications.
- Package Type: Available in TO-92 metal can and other packages, facilitating easy integration into circuits.
- Temperature Range: Operating from -55°C to +150°C, which ensures reliability in diverse environments.
- Low Noise: Suitable for audio applications due to its low noise characteristics.
Overall, the 2N2905A is versatile for various electronic circuits, including switching regulators, amplifiers, and signal processing applications.

Package

The 2N2905A is typically available in a TO-92 package, which is a small cylindrical plastic package suitable for through-hole mounting. It may also be found in other package types, like the TO-220 or SOT-23, but TO-92 is the most common for this transistor.

Pinout

The 2N2905A is a PNP bipolar junction transistor (BJT) commonly used in switching and amplification applications. It has a total of three pins:
1. Emitter (E): This pin is used to supply current to the base and is typically connected to the more negative voltage in a circuit.
2. Base (B): The base pin controls the transistor's operation. By applying a small current to this pin, it allows a larger current to flow between the collector and emitter.
3. Collector (C): This pin collects the current that flows through the transistor. It is typically connected to the load in a circuit.
The 2N2905A has a maximum collector current of 600 mA and a maximum collector-emitter voltage of 40 V. It is commonly used in low-power and medium-power applications.

Manufacturer

The 2N2905A is a bipolar junction transistor (BJT) manufactured by several companies, but it was originally produced by Motorola, which is a major telecommunications company known for its semiconductor products and innovations. Motorola, founded in 1928, has since evolved and carved out a niche in various areas including communications equipment, mobile devices, and semiconductor manufacturing. The 2N2905A is commonly used in electronic circuits for amplification and switching, making it a popular choice in various consumer electronics and industrial applications. Over the years, other manufacturers have also produced this transistor, but Motorola remains one of the most recognized names associated with it.

Application

The 2N2905A is a general-purpose NPN bipolar junction transistor (BJT) commonly used in small-signal amplification, switching applications, and signal processing. It is suitable for audio amplifiers, low-frequency oscillators, and as a driver in relay circuits. Additionally, it finds use in various low-power consumer electronics and as a general component in hobbyist projects.

Equivalent

The 2N2905A is a PNP bipolar junction transistor. Equivalent products include the 2N2955, BC559, and MPS2222A. These transistors can be used interchangeably in many applications, but always check specific parameters like voltage, current, and gain for compatibility.

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