2N2369 NPN Switching Transistor

Overview

The 2N2369 is a general-purpose NPN bipolar junction transistor (BJT) designed for switching applications. Housed in a robust TO-18 metal package, this transistor is optimized for low-current and low-voltage operations, making it suitable for a variety of electronic circuits. Its reliable performance and compact form factor have made it a popular choice among engineers and hobbyists alike.

With a maximum collector current of 200 mA and a collector-emitter voltage rating of 15 V, the 2N2369 is ideal for applications requiring fast switching speeds and moderate power handling. Its NPN polarity allows it to be easily integrated into common-emitter, common-base, or common-collector configurations, providing flexibility in circuit design.

Features

• NPN Polarity: Suitable for standard switching and amplification applications.
• Low Current Operation: Maximum collector current (Ic) of 200 mA.
• Low Voltage Rating: Collector-emitter voltage (V_CE) up to 15 V.
• TO-18 Metal Package: Durable and reliable packaging for heat dissipation and mechanical stability.
• Fast Switching Speeds: Designed for efficient on/off transitions in switching circuits.
• Wide Operating Temperature Range: Suitable for use in various environmental conditions.

Applications

The 2N2369 is widely used in electronic circuits where reliable switching and signal amplification are required. Below are some common applications:

• Switching Circuits: Used in relay drivers, LED drivers, and other low-power switching applications.
• Signal Amplification: Suitable for small-signal amplification in audio and RF stages.
• Oscillators: Can be used in LC and RC oscillator circuits for frequency generation.
• Digital Logic Circuits: Employed in transistor-transistor logic (TTL) and other logic families.
• Industrial Control Systems: Ideal for interfacing low-power control signals with higher-power loads.

Electrical Characteristics

The following table summarizes the key electrical specifications of the 2N2369 transistor under standard test conditions (unless otherwise noted):

Absolute Maximum Ratings

• Collector-Emitter Voltage (V_CEO): 15 V
• Collector-Base Voltage (V_CBO): 30 V
• Emitter-Base Voltage (V_EBO): 5 V
• Collector Current (I_C): 200 mA
• Total Power Dissipation (P_tot): 300 mW (at 25°C)
• Operating Junction Temperature (T_j): -65°C to +200°C

Typical Performance Characteristics

• DC Current Gain (h_FE): 50 - 150 (at I_C = 10 mA, V_CE = 1 V)
• Collector-Emitter Saturation Voltage (V_CE(sat)): 0.3 V (max) (at I_C = 10 mA, I_B = 1 mA)
• Transition Frequency (f_T): 150 MHz (typical)
• Turn-On Time (t_on): 35 ns (typical)
• Turn-Off Time (t_off): 85 ns (typical)

Package Information

The 2N2369 is housed in a TO-18 metal can package, which provides excellent thermal and mechanical stability. Below are the key package details:

TO-18 Package Dimensions

• Package Type: TO-18 (Metal Can)
• Diameter: 5.33 mm (0.210 in)
• Height: 8.13 mm (0.320 in) including leads
• Lead Spacing: 2.54 mm (0.100 in) between emitter, base, and collector pins
• Weight: Approximately 0.35 grams

Pin Configuration

When viewing the transistor from the bottom with the leads pointing downward, the pinout is as follows:

• Pin 1 (Leftmost Lead): Emitter (E)
• Pin 2 (Center Lead): Base (B)
• Pin 3 (Rightmost Lead): Collector (C)

Conclusion

The 2N2369 NPN switching transistor is a versatile and reliable component for low-power switching and amplification applications. Its robust TO-18 package, combined with its electrical characteristics, makes it suitable for a wide range of electronic designs. Whether used in industrial control systems, digital logic circuits, or signal amplification stages, the 2N2369 delivers consistent performance and durability.