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BD139

Name: BD139
Rating: 4.7 (12 reviews)

TRANS NPN 80V 1.5A TO126

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製造商。部分 #BD139
包 SOT-32
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規格

Package	Bulk
ProductStatus	Obsolete
TransistorType	NPN
Current-Collector(Ic)(Max)	1.5 A
Voltage-CollectorEmitterBreakdown(Max)	80 V
VceSaturation(Max)@IbIc	500mV @ 50mA, 500mA
Current-CollectorCutoff(Max)	100nA (ICBO)
DCCurrentGain(hFE)(Min)@IcVce	40 @ 150mA, 2V
Power-Max	1.25 W
OperatingTemperature	-55°C ~ 150°C (TJ)
MountingType	Through Hole
Package/Case	TO-225AA, TO-126-3

概述

Description

The BD139 is a NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. It is commonly used in various electronic circuits due to its reliability and performance. The BD139 has a maximum collector current of 1.5 A and a collector-emitter voltage rating of 80 V, making it suitable for medium-power applications.
With a current gain (hFE) typically ranging from 40 to 320, the BD139 provides good amplification characteristics. It features a TO-220 package, which allows for effective heat dissipation, crucial for maintaining performance under load.
Applications of the BD139 include audio amplifiers, power amplifiers, and signal processing circuits. Due to its versatility, it is favored in hobbyist projects and educational settings, as well as in more complex electronic designs. Overall, the BD139 is a robust and widely used transistor in electronics, ideal for a variety of applications.

Features

The BD139 is a medium power NPN bipolar junction transistor (BJT) commonly used in amplifier and switching applications. Key features include:
1. Type: NPN transistor.
2. Maximum Collector Current (Ic): Up to 1.5 A.
3. Maximum Collector-Emitter Voltage (Vce): 80 V.
4. Maximum Power Dissipation (Ptot): 1 W at 25°C.
5. Current Gain (hFE): Ranges from 40 to 320, providing good amplification.
6. Frequency Response: Transition frequency (fT) typically around 100 MHz, making it suitable for high-frequency applications.
7. Package: Often available in TO-220 and TO-92 packages, allowing for ease of handling and mounting.
8. Applications: Used in audio amplifiers, driver circuits, and general-purpose switching.
The BD139's robust characteristics and versatility make it a popular choice in electronic circuit design.

Package

The BD139 is typically packaged in a TO-220 casing. This package type features a metal tab for heat dissipation, allowing efficient thermal management in applications such as amplifiers and switching.

Pinout

The BD139 is a NPN bipolar junction transistor (BJT) commonly used in power amplification and switching applications. It typically comes in a TO-220 package, which has three pins.
Pin Count and Function:
1. Emitter (E) - Pin 1: This is where the current exits the transistor.
2. Base (B) - Pin 2: This pin controls the transistor and is used to apply the input signal.
3. Collector (C) - Pin 3: This is where the current enters the transistor, allowing the load to be connected.
The BD139 can handle a collector current of up to 1.5 A and has a maximum collector-emitter voltage rating of 80 V. It's widely used in amplifiers, drivers, and various low to medium power applications.

Manufacturer

The BD139 is manufactured by multiple companies, with one of the most notable being STMicroelectronics. STMicroelectronics is a global semiconductor company that designs, develops, manufactures, and markets a wide range of electronic components and systems. The company serves diverse industries, including automotive, industrial, personal electronics, and communication. Founded in 1987 and headquartered in Geneva, Switzerland, STMicroelectronics is recognized for its innovation and commitment to providing high-performance and energy-efficient solutions. Other manufacturers of the BD139 may include various semiconductor firms, but STMicroelectronics is among the most prominent.

Application

The BD139 is a medium-power NPN bipolar junction transistor primarily used in amplification and switching applications. Common application areas include audio amplifiers, power management circuits, signal processing, and as a driver for larger loads in control systems. It is also utilized in various consumer electronics and industrial equipment for regulatory and controlling functions.

Equivalent

The BD139 is a general-purpose NPN transistor. Equivalent products include:
1. 2N3055
2. TIP31
3. 2N2222
4. BC547
However, always verify specific characteristics like current rating, voltage rating, and package type before substitution, as they may vary.