Home - Products - Transistor - Small Signal Transistor - Details

Transistor Bc847

BC847, as a high-performance NPN small signal transistor, is widely used in various electronic devices due to its advantages of high current amplification, low noise, low voltage driving, good high-frequency characteristics, and reliable parameters at room temperature. Excellent performance and reliability can be provided in applications such as switching circuits, amplification circuits, high-frequency circuits, power management, and portable devices.

Send Inquiry

Download

Description

Transistor Bc847 Product Introduction:

High current amplification factor
It is an NPN small signal transistor widely used in electronic devices, and one of its notable features is its high current amplification factor (hFE). The current amplification factor is between 110 and 800, which varies depending on different models (such as BC847A, BC847B, BC847C). Specifically, if the current amplification factor is between 110 and 220, and between 200 and 450, it can reach as high as 420 to 800.

low noise
Low noise characteristics are another major advantage. Low noise means that during signal transmission, it can effectively reduce signal distortion and noise interference, ensuring the purity of the signal. This feature makes it very suitable for application in audio equipment, precision measuring instruments, and high fidelity signal processing circuits.

Low voltage drive
The low voltage driving characteristics give it significant advantages in low-power applications. The collector emitter saturation voltage (VCE (sat)) is usually below 0.2V, which means that it can still operate normally at lower driving voltages. This feature makes it very suitable for use in battery powered devices and portable electronic devices.

Good high-frequency characteristics
It has excellent high-frequency characteristics, which makes it perform well in high-frequency applications. Its high-frequency characteristics are mainly reflected in its high-frequency conduction gain and low input capacitance. The cutoff frequency (fT) is usually above 300MHz, which means it has good performance in high-frequency signal amplification and processing.

Reliable parameters at room temperature
The parameter performance at room temperature is very reliable, thanks to its high-quality materials and advanced manufacturing technology. At room temperature (25 ℃), various parameters (such as current amplification factor, noise coefficient, saturation voltage, etc.) exhibit stable performance, ensuring stable operation of the circuit under various environmental conditions.

Typical applications
Widely used in various electronic circuits, the following are some typical application scenarios:

Switching circuit: In low-power switching circuits, with its low voltage drive and high current amplification, it can effectively control the on/off of larger currents.

Amplification circuit: In audio amplifiers, sensor signal amplification, and other circuits that require high gain amplification, high current amplification and low noise characteristics can provide high-quality signal amplification.

High frequency circuit: In wireless communication equipment, RF circuits, and high-speed data transmission systems, the high-frequency characteristics ensure fast response and stable transmission of signals.

Power management: In power management circuits, low voltage driving and reliable parameter performance can effectively improve power efficiency and reduce power consumption.

Portable devices: Low power consumption and high reliability features can extend the battery life of devices and improve user experience in mobile and wearable devices.

Transistor Bc847 Datasheet:

MAXIMUM RATING (Ta=25 )

ELECTRICAL CHARACTERISTICS (Ta=25 )