2SC2240 Transistor NPN 120v 100mA 400mW TO-92

2SC2240 NPN Small Signal Transistor TO-92 is a low noise, high gain bipolar junction transistor designed for low-level and audio frequency signal amplification. It is widely used in preamplifier stages of audio equipment and other precision analog applications due to its high hFE and low noise characteristics.

Key Features:

• Low Noise: Designed for ultra-low noise applications in audio preamps.
• High Gain: Provides a high DC current gain (hFE) typically around 330 to 800.
• Low Collector-Emitter Saturation Voltage: Increases efficiency in small-signal amplification.
• Wide Frequency Response: Suitable for high-frequency small-signal applications up to 120MHz.
• TO-92 Package: Easy to use in breadboards and through-hole circuits.

Technical Specifications:

• Transistor Type: NPN
• Collector-Emitter Voltage (V_CEO): 120V
• Collector Current (I_C): 100mA
• Power Dissipation (P_tot): 400mW
• DC Current Gain (h_FE): 330 to 800 (typical)
• Transition Frequency (f_T): 120MHz (typical)
• Noise Figure: 1.0dB (typical)
• Package: TO-92

Mechanical Specifications:

• Package Type: TO-92 through-hole
• Pin Configuration: Emitter, Collector, Base (E-C-B from flat side left to right)
• Lead Length: Approx. 14mm
• Body Dimensions: 4.5mm × 4.0mm × 5.0mm

Mounting Options:

• Through-Hole Mounting: Suitable for insertion into PCBs or breadboards.
• Soldering: Compatible with hand and wave soldering.

Schematic Diagram, Connection, Wiring and Pinout:

• Pinout (Flat Side Facing You): Pin 1: Emitter, Pin 2: Collector, Pin 3: Base
• Connection: Connect base through bias resistor, collector to load, and emitter to ground or negative rail.
• Wiring: Use heat shrink or insulation for safe handling during high gain applications.

Datasheet and Documentation:

• Download 2SC2240 Transistor Datasheet (PDF)

Applications:

• Audio Amplifiers: Used in preamp and tone control circuits.
• Low-Noise Signal Amplification: Suitable for sensitive analog signal stages.
• Oscillators: Applied in RF oscillator and timer circuits.
• Switching: For low-power switching and interfacing.
• Hobby Electronics: Ideal for small DIY analog circuits.

Equivalent Models:

• BC550C: Low noise NPN transistor with similar hFE and voltage specs
• 2N3904: General-purpose NPN transistor for low-power applications
• 2SC1815: Japanese low-noise transistor alternative
• KSC1845: Preferred modern replacement with similar audio specs

Package Includes:

• 1 x 2SC2240 NPN Small Signal Transistor TO-92