2N5191 - High-Power NPN Bipolar Junction Transistor (BJT)

Overview

The 2N5191 is a high-power NPN bipolar junction transistor (BJT) designed for demanding applications requiring robust current handling and high voltage capabilities. This component is widely used in power amplification, switching circuits, and industrial control systems due to its rugged construction and reliable performance under high-stress conditions. The transistor is housed in a TO-204AA (TO-3) metal package, ensuring excellent thermal dissipation and mechanical durability.

Features

• High Current Capability: Capable of handling collector currents up to 10A, making it suitable for power applications.
• High Voltage Rating: Collector-emitter voltage (V_CEO) of 80V ensures reliable operation in high-voltage circuits.
• Low Saturation Voltage: V_CE(sat) as low as 1.5V at I_C = 4A, minimizing power loss in switching applications.
• Excellent Thermal Performance: TO-3 package provides superior heat dissipation, with a maximum junction temperature of 200°C.
• High Gain Bandwidth Product: Suitable for both switching and linear amplification applications.
• Robust Construction: Designed for industrial and military-grade reliability.

Applications

The 2N5191 is versatile and finds use in a variety of high-power and high-voltage applications, including:

• Power Amplifiers: Used in audio and RF power amplification stages.
• Switching Regulators: Efficiently controls high-current loads in DC-DC converters and power supplies.
• Motor Control: Drives motors in industrial automation and robotics.
• Linear Voltage Regulators: Acts as a pass transistor in high-current voltage regulation circuits.
• Industrial Equipment: Employed in welding machines, inverters, and power control systems.
• Automotive Systems: Used in ignition systems and electronic control units (ECUs).

Electrical Characteristics

The following table summarizes the key electrical specifications of the 2N5191 under standard test conditions (T_A = 25°C unless otherwise noted):

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 80V
• Collector-Base Voltage (V_CBO): 120V
• Emitter-Base Voltage (V_EBO): 7V
• Collector Current (I_C): 10A (continuous)
• Base Current (I_B): 5A (peak)
• Total Power Dissipation (P_D): 117W (at T_C = 25°C)
• Operating Junction Temperature (T_J): -65°C to +200°C
• Storage Temperature (T_STG): -65°C to +200°C

Thermal Characteristics

• Thermal Resistance, Junction-to-Case (R_θJC): 1.07°C/W
• Thermal Resistance, Junction-to-Ambient (R_θJA): 35°C/W

DC Current Gain (h_FE)

• Minimum h_FE at I_C = 4A, V_CE = 4V: 20
• Typical h_FE at I_C = 4A, V_CE = 4V: 40

Switching Characteristics

• Turn-On Time (t_on): 500ns (typical)
• Turn-Off Time (t_off): 1.5μs (typical)
• Collector-Emitter Saturation Voltage (V_CE(sat)): 1.5V max at I_C = 4A, I_B = 0.4A

Package Information

The 2N5191 is housed in a TO-204AA (TO-3) package, which is a robust metal case designed for high-power applications. The package dimensions and pin configuration are as follows:

Mechanical Specifications

• Package Type: TO-3 (TO-204AA)
• Material: Metal case with epoxy-sealed leads
• Weight: Approximately 10 grams
• Mounting: Requires a heatsink for optimal thermal performance

Pin Configuration

• Pin 1 (Base): Input control terminal
• Pin 2 (Collector): Connected to the metal case and the high-power load
• Pin 3 (Emitter): Output terminal

Package Dimensions

• Overall Height: 27.5mm (max)
• Base Diameter: 16.5mm (max)
• Lead Length: 19mm (min)
• Mounting Hole Spacing: 10.9mm (center-to-center)

Reliability and Compliance

The 2N5191 is designed to meet stringent reliability standards, including:

• MIL-STD-750: Compliant with military test methods for semiconductor devices.
• RoHS Compliance: Meets Restriction of Hazardous Substances directives.
• High-Temperature Operation: Tested for stable performance across a wide temperature range.

Conclusion

The 2N5191 is a high-performance NPN power transistor that excels in applications requiring high current, high voltage, and robust thermal management. Its TO-3 package ensures durability and efficient heat dissipation, making it a preferred choice for industrial, automotive, and power supply designs. With its excellent electrical characteristics and reliability, the 2N5191 remains a cornerstone component in power electronics.