Electronics project

BC639 Transistor: Datasheet, Pinout, and Applications Introduction The BC639 is a widely-used NPN transistor that falls into the general-purpose category. Known for its high gain and voltage-handling capacity, it finds use in a variety of electronic circuits such as amplifiers, switches, and drivers. In this post, we'll dive into the key aspects of the BC639 transistor, covering its datasheet specifications, pinout configuration, and common applications. BC639 Datasheet Overview The BC639 is a silicon NPN transistor designed for amplification and switching applications. Below are the critical specifications typically listed in the BC639 datasheet: Maximum Collector-Emitter Voltage (V_CEO) : 80V Maximum Collector-Base Voltage (V_CBO) : 100V Maximum Emitter-Base Voltage (V_EBO) : 5V Collector Current (I_C) : 1A Power Dissipat...

 BC558 NPN Transistor pinout and Datasheet: Pinout: Collector (C) Base (B) Emitter (E) BC558 NPN Transistor Datasheet General Description:  The BC558 is a widely used NPN bipolar junction transistor (BJT) designed for general-purpose amplification and switching applications. It belongs to the BC54x series of transistors and is commonly used in low-power amplifier circuits, signal amplification, and as a switch in various electronic devices. Features: NPN transistor with three-layer construction. Low current (IC) and voltage (VCE) ratings. High current gain (hFE). Low saturation voltage. RoHS compliant. Electrical Characteristics (TA = 25°C unless otherwise specified): 1 Absolute Maximum Ratings: Collector-Base Voltage (VCBO): 30 V Collector-Emitter Voltage (VCEO): 30 V Emitter-Base Voltage (VEBO): 5 V Collector Current (IC): 100 mA Total Device Dissipation (PD): 500 mW Operating and Storage Junction Temperature Range...

 The IC LM7809 is used for the regulated power supply of 9 volt.  By giving 12v to 35v on its input pin number 1, a regulated power supply of its output pin numbers 3 to 9v is obtained.  Its output can deliver loads up to 1.5mA on pin no.3.  The pinout of the IC LM7809 is shown in the below circuit. ic lm7809 voltage regulator pinout 

                 BC547 NPN Bipolar Junction Transistor -------------------------------------------------------------------- General Description: ------------------- The BC547 is a popular NPN bipolar junction transistor commonly used in amplifier and switching applications. It is designed for low to medium power amplification and switching tasks. Features: --------- - NPN silicon transistor - Low voltage (up to 45V) and current (up to 100mA) ratings - High current gain (hFE) of 110 to 800 - TO-92 plastic package for easy mounting Pinout: -------   Emitter (E)       Collector (C)       Base (B)     |----------------|------------------|      Absolute Maximum Ratings: ------------------------- Parameter              Symbol      Value ---------------------------------------- Co...

BC548 NPN Transistor data sheet and pinout Features: NPN silicon transistor. High current gain (hFE) of typically 110-800. Low collector-emitter saturation voltage. Low noise and low power. Absolute Maximum Ratings: Collector-Base Voltage (VCBO): 30V Collector-Emitter Voltage (VCEO): 30V Emitter-Base Voltage (VEBO): 5V Collector Current (IC): 100mA Total Device Dissipation (PD): 500mW Junction Temperature (TJ): 150°C Storage Temperature Range (TSTG): -65 to 150°C Electrical Characteristics (TA = 25°C unless otherwise specified): Package Information: The BC548 transistor is available in...