BC337 NPN Transistor Pinout Datasheet

Introduction

The BC337 NPN transistor is a widely used general-purpose small-signal transistor, designed for low to medium current amplification and switching applications. It is part of the BC3xx transistor family and offers a maximum collector current of 800mA, making it suitable for driving larger loads compared to lower-rated transistors like BC547 or BC548. With its high gain and robust performance, the BC337 is often used in audio amplifier stages, LED drivers, relay drivers, and signal processing circuits.

The BC337 provides a maximum collector-emitter voltage of 45V, making it reliable for both low-voltage and medium-voltage applications. It has a wide range of DC current gain (hFE) between 100 and 630 depending on the version (A, B, or C suffix). This transistor can efficiently function as a switch in digital logic circuits or as an amplifier in analog systems. Its TO-92 package ensures compact size, making it easy to integrate into PCB designs and breadboards for prototyping.

BC337 NPN Transistor

Due to its low cost, high availability, and versatility, the BC337 transistor is extensively used in consumer electronics, power control circuits, motor drivers, and industrial automation systems. Its ability to handle higher collector current compared to general-purpose transistors makes it a preferred choice for engineers, hobbyists, and circuit designers.

BC337 Pinout

BC337 Transistor Key Features

• Medium power NPN transistor with high collector current rating.
• Suitable for both amplification and switching applications.
• Offers three gain classifications (A, B, C) for design flexibility.
• Compact TO-92 plastic package for easy integration.
• Widely used in consumer and industrial electronics.
• Reliable and cost-effective for general-purpose applications.

Specifications/Characteristics of BC337 NPN Transistor

• Maximum Collector-Base Voltage (Vcb): 50V
• Maximum Collector-Emitter Voltage (Vce): 45V
• Maximum Emitter-Base Voltage (Veb): 5V
• Maximum Collector Current (Ic): 800mA
• Total Power Dissipation (Ptot): 625mW
• DC Current Gain (hFE): 100 – 630
• Transition Frequency (ft): 100 MHz (typical)
• Operating Temperature Range: -65°C to +150°C
• Package: TO-92 plastic

BC337 Pin Configuration

More Circuit Layouts

Key Applications of BC337 NPN Transistor

• Audio amplifier output stages.
• General-purpose switching applications.
• Relay and LED drivers.
• Motor driver and control circuits.
• Power management and regulation circuits.
• Digital logic switching.
• Consumer and industrial electronic devices.

PNP Complimentary Transistor

PNP Complementary of BC337 Transistor is BC327

EquivalentTransistors of BC337

• BC546 (low current, higher voltage rating).
• BC547 (general-purpose, 100mA).
• BC548 (general-purpose, 100mA).
• 2N2222 (higher current capacity).
• 2N3904 (similar NPN transistor).
• S8050 (low-cost substitute).

(Pin configuration of some transistors mentioned here may different from BC337).

Datasheet of BC337 NPN Transistor

Click the following Button below to download the datasheet of BC337 Transistor :

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