Pin Configuration of BC547: Important Features & Equivalent

The BC547 is an NPN bipolar junction transistor (BJT) that is widely used in electronic circuits for various applications. Understanding the pin configuration of BC547 is essential for proper connection and utilization in circuit designs.

Pin Configuration of BC547

Let’s explore the pin configuration of BC547 in detail.

The BC547 transistor consists of three pins: the emitter (E), base (B), and collector (C). The pin configuration of BC547 is as follows:

Emitter (E): The emitter is the first pin of the BC547 transistor, denoted as “E” in the datasheet. It is typically marked with an arrow or a small triangle symbol. The emitter is responsible for the majority charge carriers (electrons for NPN transistors) and serves as the reference point for current flow.

Base (B): The base is the second pin of the BC547 transistor, labeled as “B” in the datasheet. It is located between the emitter and collector pins. The base pin controls the current flow between the emitter and collector, allowing the transistor to amplify or switch electrical signals.

Collector (C): The collector is the third pin of the BC547 transistor, denoted as “C” in the datasheet. It is the output terminal and carries the majority of the current in the transistor. The collector pin is often connected to the positive supply voltage in many circuit configurations.

The pin configuration of BC547 transistor can be represented in a triangular arrangement, with the pins extending outward from the vertices of the triangle. The emitter pin is typically located on the left side, the base pin is in the center, and the collector pin is positioned on the right side.

When using the BC547 transistor in a circuit, it is crucial to connect the pins correctly to ensure proper functionality and avoid potential damage to the transistor. Referring to the Pin Configuration of BC547 or datasheet will help identify and correctly connect the pins according to the desired circuit configuration.

Features of BC547 Transistor:

• NPN bipolar junction transistor (BJT)
• High current gain (hFE) of typically 110 to 800
• Low noise and distortion for amplification applications
• Suitable for low-power switching and general-purpose amplification purposes
• High voltage breakdown capability

Specifications of BC547 Transistor:

• Maximum collector current (IC) of 100 mA
• Maximum collector-emitter voltage (VCEO) of 45 V
• Maximum power dissipation (Ptot) of 500 mW
• Transition frequency (fT) of 300 MHz
• Operating temperature range typically from -55°C to +150°C

Where to Buy BC547 Transistor

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Equivalent ICs BC547 Transistor:

BC548: This is a variant of the BC547 transistor with similar characteristics and pin configuration. The BC548 can serve as an equivalent or alternative to the BC547 in many circuit designs.

2N3904: This is an NPN transistor with comparable characteristics and pin configuration of BC547. It can be used as a substitute or equivalent to the BC547 in various electronic circuits.

PN2222A: This is another NPN transistor that offers similar functionality and pin configuration to the BC547. It can be used interchangeably with the BC547 depending on specific requirements and component availability.

These equivalent ICs provide similar performance and can be utilized as replacements for the BC547 in various electronic circuits, depending on specific needs and component availability.

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