ALLNET ALL-BRICK-0019 NPN Transistor BC547B TO-92 45V 100mA 500mW

The ALLNET ALL-BRICK-0019 is a high-quality NPN bipolar junction transistor (BJT) from the BC547B series, designed for general-purpose switching and amplification applications. Housed in a compact TO-92 through-hole package, this silicon transistor offers reliable performance with a collector-emitter voltage of 45V and a continuous collector current of 100mA. With a DC current gain (hFE) of 200-450 and a transition frequency of 300 MHz, it is suitable for a wide range of electronic circuits.

Advantages

This transistor provides excellent linearity and low noise figure (2 dB typical), making it ideal for low-level signal amplification. Its through-hole design ensures easy mounting on PCBs, and the TO-92 package is widely compatible with standard prototyping boards. The BC547B grade guarantees consistent gain characteristics, simplifying circuit design.

Suitable for

• General-purpose switching circuits
• Signal amplification in audio and sensor applications
• Driver stages for relays and LEDs
• Hobbyist and educational electronics projects
• Repair and replacement in existing equipment

Key specifications

• Transistor Type: NPN Bipolar Junction Transistor (BJT)
• Series: BC547B
• Package: TO-92 (Through Hole)
• Number of Pins: 3
• Collector-Emitter Voltage (Vce): 45 V
• Collector-Base Voltage (Vcb): 50 V
• Emitter-Base Voltage (Veb): 6 V
• Collector Current (Ic): 100 mA
• Power Dissipation (Pd): 500 mW
• DC Current Gain (hFE): 200 - 450
• Transition Frequency (fT): 300 MHz (typical)
• Operating Temperature Range: -55°C to +150°C
• Material: Silicon
• Polarity: NPN
• Maximum Collector-Emitter Saturation Voltage: 250 mV (at Ic=100mA, Ib=5mA)
• Noise Figure: 2 dB (typical)

Recommendations

For optimal performance, ensure proper base current limiting and avoid exceeding maximum ratings. This transistor is a direct replacement for many standard BC547 devices. Suitable for use in low-power amplification and switching up to 100 mA.