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BC817-40

Name: BC817-40
Rating: 4.7 (12 reviews)

TRANS NPN 45V 0.5A SOT23-3

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製造商。部分 #BC817-40
包 SOT23
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規格

Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Obsolete
TransistorType	NPN
Current-Collector(Ic)(Max)	500 mA
Voltage-CollectorEmitterBreakdown(Max)	45 V
VceSaturation(Max)@IbIc	700mV @ 50mA, 500mA
Current-CollectorCutoff(Max)	100nA (ICBO)
DCCurrentGain(hFE)(Min)@IcVce	250 @ 100mA, 1V
Power-Max	250 mW
Frequency-Transition	100MHz
OperatingTemperature	150°C (TJ)
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3

概述

Description

The BC817-40 is a general-purpose NPN bipolar junction transistor (BJT) commonly used in low to medium power applications. It is known for its high current gain and can handle collector currents up to 800 mA with a maximum collector-emitter voltage of 45 V. The transistor is typically housed in a TO-220 package, making it easy to mount on PCBs.
Key specifications include a DC current gain (hFE) ranging from 100 to 800, making it suitable for amplification and switching applications. The BC817-40 is often used in signal processing, driving loads like LEDs, and in switching power supplies. Its robustness and versatility make it a popular choice among electronics hobbyists and professionals alike.
When using the BC817-40, careful consideration of thermal management and maximum ratings is essential to ensure reliable operation.

Features

The BC817-40 is a NPN bipolar junction transistor designed for general-purpose switching and amplification applications. Key features include:
1. Voltage Rating: It has a maximum collector-emitter voltage (Vce) of 45V, making it suitable for various voltage applications.
2. Current Rating: The maximum collector current (Ic) is 500mA, allowing it to handle moderate load currents.
3. Gain: The transistor offers a current gain (hFE) ranging from 100 to 600, depending on the operating conditions, ensuring efficient amplification.
4. Package Type: It is available in a plastic TO-92 package, which is compact and easy to mount on PCBs.
5. Frequency: The BC817-40 can operate effectively at frequencies up to 100MHz, making it suitable for RF applications as well.
6. Temperature Range: The device can operate within a temperature range of -55°C to +150°C, providing thermal stability in various environments.
These attributes make the BC817-40 a versatile choice for electronic circuits requiring reliable switching and amplification.

Package

The BC817-40 is typically packaged in a TO-92 form factor, which is a cylindrical plastic package used for transistors. This package type is common for low-power transistors, facilitating easy mounting on PCBs.

Pinout

The BC817-40 is a NPN bipolar junction transistor (BJT) commonly used for general-purpose switching and amplification. It comes in a TO-92 package and has three pins, which are designated as follows:
1. Emitter (E): The terminal through which carriers leave the transistor. It is connected to the lower potential in a circuit.

2. Base (B): The terminal used to control the transistor's operation. Applying a small current to the base allows a larger current to flow from the collector to the emitter.
3. Collector (C): The terminal through which carriers enter the transistor. It is connected to the higher potential in a circuit.
The BC817-40 can handle a maximum collector current of 800 mA and a maximum collector-emitter voltage of 45 V, making it suitable for low to moderate power applications.

Manufacturer

The BC817-40 is a bipolar junction transistor (BJT) manufactured by various semiconductor companies, with notable manufacturers including Nexperia, ON Semiconductor, and STMicroelectronics. These companies specialize in the production of semiconductor devices and related components, serving a wide range of industries such as automotive, consumer electronics, telecommunications, and industrial applications. They focus on developing innovative solutions for power management, signal processing, and electronic control. Overall, they play a crucial role in the electronics supply chain, providing essential components for modern electronic devices.

Application

The BC817-40 is a versatile NPN transistor used in various applications, including low-power switching, amplification, and signal processing circuits. Common areas include consumer electronics, audio equipment, and telecommunications. It is suitable for driving small loads, inverters, and control circuits, as well as in LED drivers and sensor applications. Its compact design makes it ideal for space-constrained environments.

Equivalent

The BC817-40 is a NPN bipolar junction transistor. Equivalent products include:
1. BC547
2. 2N3904
3. 2N2222
Ensure to check specifications like voltage, current ratings, and package type to confirm suitability for your application.