BC636 PNP Transistor Pinout Datasheet

Introduction

The BC636 is a PNP silicon transistor primarily designed for medium-power amplification and switching applications. It belongs to the BC63x transistor family (BC636, BC637, BC638, BC639, BC640), widely used in audio amplifiers, signal processing circuits, and industrial control systems. With a maximum collector current of 1A and a collector-emitter voltage rating of 45V, the BC636 provides a reliable solution for handling moderate power loads in both consumer and industrial electronics.

Constructed in the TO-92 or TO-126 plastic package, this transistor delivers excellent thermal performance, high current gain, and low saturation voltage, making it highly suitable for driver stages of power amplifiers and low-frequency switching. Because of its balanced electrical performance, it is frequently used in complementary push-pull amplifier designs along with its NPN counterpart.

BC636 PNP Medium Power Transistor

The BC636 is also valued for its high gain stability across temperature variations and its wide frequency response that ensures clean signal amplification. Due to its versatility, low cost, and easy availability, the BC636 remains a popular choice for both professional circuit designers and electronics hobbyists in various low and medium-power PNP transistor applications.

BC636 Pinout

Pin Configuration

Key Features

• PNP silicon medium-power transistor
• High collector current capability up to 1A
• Suitable for low and medium-frequency amplifier circuits
• Excellent gain linearity and thermal stability
• Low collector-emitter saturation voltage
• Widely used in complementary amplifier configurations
• Compact and reliable plastic encapsulation

Characteristics

• Transistor Type: PNP
• Collector-Emitter Voltage (Vceo): 45V
• Collector-Base Voltage (Vcbo): 45V
• Emitter-Base Voltage (Vebo): 5V
• Maximum Collector Current (Ic): 1A
• DC Current Gain (hFE): 40 – 250 (typical range)
• Power Dissipation (Ptot): 800mW to 1.25W (depending on package type)
• Transition Frequency (fT): 50MHz
• Collector Saturation Voltage (Vce(sat)): 0.3V typical
• Operating and Storage Temperature Range: -65°C to +150°C
• Package Type: TO-92 / TO-126

Comparison of BC636, BC638, BC640

• BC636 has the lowest voltage rating (45V) and is best suited for low to medium-voltage amplifier and switching circuits.
• BC638 offers a higher voltage rating (60V) and can handle slightly greater power, making it more suitable for robust amplifier stages.
• BC640 provides the highest collector-emitter voltage (80V) within the family, offering improved performance in high-voltage and demanding applications.
• In essence, BC636 focuses on general-purpose medium-power use, BC638 provides a balance of voltage and current handling, while BC640 delivers maximum voltage tolerance and durability for high-demand circuits.

More Circuit Layouts

Key Applications of BC636 Transistor

• Audio amplifier driver and output stages
• Low-frequency analog signal amplification
• Switching circuits and control modules
• Complementary push-pull amplifier pairs
• Power supply regulation and load drivers
• Consumer and industrial electronics

NPN Complementary Transistor

• BC636 has the BC546 or BC639 as its NPN complementary counterparts, depending on circuit design requirements.
  These pairs are often used together in push-pull amplifier circuits or complementary output stages to achieve symmetrical waveform amplification and efficient performance.

Equivalent of BC636 PNP Transistor

• BC638, BC640, 2N2907, BD136, BC327, 2SA1015, 2SA733
  These alternatives can be used in similar medium-power PNP applications, provided voltage and current ratings are verified to match the circuit requirements.

(Pin configuration of some transistors mentioned above may different from BC636).

Datasheet of BC636 PNP Transistor

Click the following Button to download the datasheet of BC636 Transistor :

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