2N5339 NPN Transistor Technical Summary

Overview

The 2N5339 is a silicon epitaxial planar NPN transistor designed for general-purpose amplification and switching applications. This robust component offers high current gain, low saturation voltage, and excellent thermal stability, making it suitable for a wide range of electronic circuits. The transistor is housed in a TO-39 metal can package, ensuring reliable performance in demanding environments.

Engineered for versatility, the 2N5339 is commonly used in audio amplifiers, power regulators, and signal processing circuits. Its construction leverages epitaxial planar technology, which enhances its frequency response and reduces leakage currents, ensuring consistent operation across various temperatures and operating conditions.

Features

• High Current Gain (h_FE): Typically 40 to 120 at 150 mA, ensuring efficient signal amplification.
• Low Saturation Voltage: V_CE(sat) of 0.3 V (max) at I_C = 150 mA, minimizing power loss in switching applications.
• High Collector Current: Capable of handling up to 600 mA continuous collector current (I_C).
• Excellent Thermal Stability: Operates reliably across a temperature range of -65°C to +200°C.
• TO-39 Package: Robust metal can packaging provides mechanical durability and efficient heat dissipation.
• Low Noise: Suitable for audio and sensitive signal amplification due to minimal noise interference.

Applications

The 2N5339 is widely used in both commercial and industrial electronic circuits due to its balanced performance characteristics. Key applications include:

• Audio Amplifiers: Used in pre-amplification and driver stages due to its high gain and low noise.
• Switching Circuits: Ideal for relay drivers, motor control, and power switching due to low saturation voltage.
• Voltage Regulators: Employed in series pass elements for stable voltage output.
• Signal Processing: Used in analog signal conditioning and waveform shaping circuits.
• General-Purpose Amplification: Suitable for small-signal and medium-power amplification in various electronic devices.

Electrical Characteristics

The following tables outline the key electrical specifications of the 2N5339 transistor under standard test conditions (unless otherwise noted).

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 40 V
• Collector-Base Voltage (V_CBO): 60 V
• Emitter-Base Voltage (V_EBO): 6 V
• Collector Current (I_C): 600 mA (continuous)
• Total Power Dissipation (P_tot): 625 mW at 25°C (derate above 25°C)
• Operating Temperature Range (T_j): -65°C to +200°C

Typical Performance Characteristics

• DC Current Gain (h_FE): 40 to 120 (at I_C = 150 mA, V_CE = 1 V)
• Collector-Emitter Saturation Voltage (V_CE(sat)): 0.3 V (max) at I_C = 150 mA, I_B = 15 mA
• Base-Emitter Saturation Voltage (V_BE(sat)): 1.2 V (max) at I_C = 150 mA, I_B = 15 mA
• Transition Frequency (f_T): 100 MHz (typical) at I_C = 10 mA, V_CE = 10 V
• Output Capacitance (C_obo): 8 pF (typical) at V_CB = 10 V, f = 1 MHz

Package Information

The 2N5339 is housed in a TO-39 metal can package, which provides excellent thermal and mechanical properties. Below are the key package specifications:

• Package Type: TO-39 (hermetically sealed metal can)
• Dimensions: 8.13 mm (0.32 in) diameter, 5.59 mm (0.22 in) height (excluding leads)
• Lead Material: Kovar or equivalent alloy, gold-plated for corrosion resistance.
• Pin Configuration:
  • Pin 1: Emitter (E)
  • Pin 2: Base (B)
  • Pin 3: Collector (C) – connected to the case
• Weight: Approximately 0.6 grams
• Mounting: Through-hole, with recommended PCB hole spacing of 5.08 mm (0.2 in) between leads.

Reliability and Compliance

The 2N5339 is manufactured under strict quality control standards to ensure long-term reliability. It complies with the following industry standards:

• RoHS compliant (Restriction of Hazardous Substances)
• Meets JEDEC JESD22 standards for environmental and stress testing
• ESD protection: Human Body Model (HBM) Class 1 (≥ 1 kV)

Conclusion

The 2N5339 NPN transistor is a versatile and reliable component suitable for a broad spectrum of amplification and switching applications. Its high current gain, low saturation voltage, and robust TO-39 packaging make it an excellent choice for engineers designing circuits requiring dependable performance under varying conditions. Whether used in audio systems, power management, or signal processing, the 2N5339 delivers consistent results, backed by rigorous manufacturing standards.