ALLNET 118390 NPN Bipolar Junction Transistor TO-92 45V 100mA 500mW

The ALLNET 118390 is a high-quality NPN Bipolar Junction Transistor (BJT) designed for small signal amplification and switching applications. Housed in a standard TO-92 through-hole package, this silicon transistor offers reliable performance with a maximum collector-emitter voltage of 45V and a continuous collector current of 100mA. With a DC current gain (hFE) range of 200 to 450 (B grade) and a transition frequency of 300 MHz, it is ideal for low-power circuits requiring efficient signal processing.

Advantages

This transistor provides excellent linearity and low noise characteristics, making it suitable for audio preamplifiers, sensor interfaces, and general-purpose switching. The TO-92 package allows easy integration into breadboards and PCBs, while the wide operating temperature range (-55 to +150 °C) ensures stability in harsh environments.

Suitable for

• Small signal amplification in audio and RF circuits
• Low-power switching applications
• Hobbyist and educational electronics projects
• Repair and replacement of legacy equipment

Key specifications

• Transistor Type: NPN Bipolar Junction Transistor (BJT)
• Package Type: TO-92
• Mounting Type: Through Hole
• Collector-Emitter Voltage (Vce) Max: 45 V
• Collector-Base Voltage (Vcb) Max: 50 V
• Emitter-Base Voltage (Veb) Max: 6 V
• Collector Current (Ic) Max: 100 mA
• Power Dissipation (Pd) Max: 500 mW
• DC Current Gain (hFE) Min: 200 (B grade)
• DC Current Gain (hFE) Max: 450 (B grade)
• Transition Frequency (fT): 300 MHz
• Operating Temperature Range: -55 to +150 °C
• Number of Pins: 3
• Polarity: NPN
• Material: Silicon

Recommendations

For optimal performance, ensure proper biasing and heat dissipation within the specified limits. This transistor is a direct replacement for many common NPN types such as 2N3904 and BC547. Always verify pin configuration before soldering.