BC337 transistor Datasheet, Equivalent

Basic Information

Type: NPN Bipolar Junction Transistor
Pin Configuration: The BC337 has three pins:
- Pin 1- Collector (C): Connected to the load in a circuit.
- Pin 2- Base (B): Controls the transistor’s operation.
- Pin 3- Emitter (E): Connected to ground or a negative voltage supply.

Features of BC337

Current Gain (hFE), 100 to 630
Continuous Collector current (I_C) is 800mA
Collector-Emitter voltage (V_CEO) is 45 V
Collector-Base voltage (V_CB0) is 50V
Emitter Base Voltage (V_BE0) is 5V
Transition Frequency 100MHz
Available in To-92 Package

Operation and Applications

Switching: The BC337 is often used as a switch in digital circuits. When a small current is applied to the base, the transistor allows a larger current to flow from the collector to the emitter, turning the circuit on. When the base current is removed, the transistor turns off.
Amplification: The BC337 can also amplify weak signals. A small input signal at the base is amplified and appears as a larger output signal at the collector.
Signal Processing: It can be used in signal processing circuits, such as audio amplifiers and other analog signal circuits.
Driving Loads: Due to its ability to handle relatively high current, it’s commonly used to drive loads like LEDs, relays, or small motors.

Common Applications of BC337

Low-power audio amplifiers
LED drivers
Small motor drivers
Signal amplifiers
General-purpose switching in electronic circuit

Packaging

The BC337 is usually available in a TO-92 package, which is a small, plastic, and through-hole package commonly used in low-power applications.

bc337 vs bc547

Comparison with Other Transistors

The BC337 is similar to the BC547, but the BC337 can handle higher currents (800ma), BC547 Can handle (100ma) making it suitable for applications requiring more power. It is also comparable to the BC338, which has similar characteristics but with a slightly higher current rating.