2N5195 Silicon Epitaxial-Base PNP Transistor

Overview

The 2N5195 is a silicon epitaxial-base PNP transistor designed for general-purpose amplification and switching applications. This robust component offers reliable performance in a variety of electronic circuits, making it suitable for both industrial and consumer applications. Its epitaxial construction ensures high-frequency response and low noise, while its PNP configuration allows for flexibility in circuit design.

The transistor is housed in a TO-220 package, providing excellent thermal dissipation and mechanical durability. With its moderate power handling capabilities and high current gain, the 2N5195 is a versatile choice for designers seeking a dependable PNP transistor.

Features

• High Current Gain (h_FE): Typically 40 to 120, ensuring efficient signal amplification.
• Low Saturation Voltage: Minimizes power loss in switching applications.
• Epitaxial-Base Construction: Enhances high-frequency performance and reduces noise.
• TO-220 Package: Provides superior thermal management and mechanical strength.
• Wide Operating Temperature Range: -65°C to +200°C, suitable for harsh environments.
• High Collector-Emitter Voltage (V_CEO): Up to 60V, allowing use in medium-voltage circuits.
• Complementary NPN Option: Pairs well with NPN transistors for push-pull configurations.

Applications

The 2N5195 is widely used in various electronic circuits due to its balanced performance characteristics. Below are some common applications:

• Audio Amplifiers: Used in preamplifier and driver stages due to its low noise and high gain.
• Switching Circuits: Ideal for relay drivers, motor controllers, and power switches.
• Voltage Regulators: Functions as a pass transistor in linear regulator designs.
• Signal Processing: Suitable for analog signal conditioning and filtering.
• Industrial Control Systems: Used in automation and control modules for reliable switching.
• Consumer Electronics: Found in power supplies, LED drivers, and other household devices.

Electrical Characteristics

The following tables outline the key electrical parameters of the 2N5195 under specified test conditions.

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 60V
• Collector-Base Voltage (V_CBO): 80V
• Emitter-Base Voltage (V_EBO): 5V
• Collector Current (I_C): 4A (continuous)
• Total Power Dissipation (P_tot): 40W at 25°C (derated above 25°C)
• Operating and Storage Temperature Range: -65°C to +200°C

Typical Electrical Characteristics (T_A = 25°C unless otherwise noted)

• DC Current Gain (h_FE): 40 to 120 at I_C = 500mA, V_CE = 4V
• Collector-Emitter Saturation Voltage (V_CE(sat)): 0.5V max at I_C = 1A, I_B = 100mA
• Base-Emitter Saturation Voltage (V_BE(sat)): 1.2V max at I_C = 1A, I_B = 100mA
• Transition Frequency (f_T): 50MHz typical at I_C = 100mA, V_CE = 10V
• Output Capacitance (C_obo): 50pF typical at V_CB = 10V, f = 1MHz

Package Information

The 2N5195 is available in a TO-220 package, which is widely used for power transistors due to its excellent thermal and mechanical properties.

TO-220 Package Dimensions

• Total Height: 16.5mm (max)
• Lead Length: 12.7mm (min)
• Lead Spacing: 2.54mm (between centers)
• Mounting Hole Diameter: 3.5mm (recommended)
• Weight: Approximately 2.0 grams

Thermal Characteristics

• Thermal Resistance, Junction-to-Case (R_θJC): 3.125°C/W
• Thermal Resistance, Junction-to-Ambient (R_θJA): 62.5°C/W (without heatsink)

Conclusion

The 2N5195 is a versatile PNP transistor that combines high current gain, low saturation voltage, and robust thermal performance in a TO-220 package. Its epitaxial-base construction ensures reliable operation in amplification and switching applications across a broad range of temperatures and voltages. Whether used in audio amplifiers, power supplies, or industrial control systems, the 2N5195 delivers consistent performance and durability, making it a preferred choice for engineers and designers.