BC338 NPN Transistor Pinout Datasheet

Introduction

The BC338 NPN transistor is a general-purpose, medium-power transistor designed for switching and amplification applications. It is widely used in consumer electronics, signal processing, and driver circuits due to its ability to handle relatively higher currents compared to small-signal transistors like the BC547 or BC548. With a maximum collector current of 800mA and a collector-emitter voltage of 25V, the BC338 is well-suited for driving loads such as relays, LEDs, and small motors.

The BC338 is available in three gain classifications: BC338-16, BC338-25, and BC338-40, each offering a different DC current gain (hFE) range. This flexibility allows designers to select the right transistor type depending on whether high gain or medium gain is required in the circuit. Additionally, its transition frequency of 100 MHz makes it effective in both audio frequency and low RF applications.

BC338 NPN Transistor

Packaged in a compact TO-92 plastic package, the BC338 is widely adopted in industrial automation, DIY electronics, and educational projects. Its higher current rating compared to other BC series transistors makes it a popular choice for power amplification, switching regulators, and driver circuits where durability and efficiency are important.

BC338 Pinout

BC338 Transistor Key Features

• Medium-power NPN transistor suitable for both switching and amplification.
• Available in multiple gain groups (16, 25, 40) for design flexibility.
• Compact TO-92 package for easy PCB and breadboard integration.
• Handles higher current compared to standard general-purpose transistors.
• Cost-effective and widely available for hobby and professional use.
• Reliable for both analog and digital circuit designs.

Specifications/Characteristics of BC338 NPN Transistor

• Maximum Collector-Base Voltage (Vcb): 30V
• Maximum Collector-Emitter Voltage (Vce): 25V
• Maximum Emitter-Base Voltage (Veb): 5V
• Maximum Collector Current (Ic): 800mA
• Total Power Dissipation (Ptot): 625mW
• DC Current Gain (hFE): 40 – 250 (depending on classification)
• Transition Frequency (ft): 100 MHz (typical)
• Operating Temperature Range: -65°C to +150°C
• Package: TO-92 plastic

BC338 Pin Configuration

More Circuit Layouts

Key Applications of BC338 NPN Transistor

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

PNP Complimentary Transistor

PNP Complementary of BC338 Transistor is BC328

EquivalentTransistors of BC338

• BC337 (similar ratings with higher voltage tolerance).
• 2N2222 (NPN, higher current capacity).
• 2N3904 (general-purpose NPN transistor).
• S8050 (low-cost substitute).
• BC546 / BC547 (lower current but higher voltage).

(Pin configuration of some transistors mentioned here may different from BC338).

Datasheet of BC338 NPN Transistor

Click the following Button below to download the datasheet of BC338 Transistor :

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