BC184B Bipolar Transistor

• Type: NPN
• Collector-Emitter Voltage, max: 30 V
• Collector-Base Voltage, max: 45 V
• Emitter-Base Voltage, max: 6 V
• Collector Current − Continuous, max: 0.2 A
• Collector Dissipation: 0.3 W
• DC Current Gain (h_fe): 240 to 500
• Transition Frequency, min: 280 MHz
• Noise Figure, max: 4 dB
• Operating and Storage Junction Temperature Range: -55 to +150 °C
• Package: TO-92

The BC184B is manufactured in a plastic TO-92 case. When looking at the flat side with the leads pointed downward, the three leads emerging from the transistor are, from left to right, the collector, base, and emitter leads.
Here is an image showing the pin diagram of this transistor.You can replace the BC184B with the BC337.