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push({});Features / Technical Specifications:Package Type: TO-92Transistor Type: N ChannelMax Voltage Applied From Drain to Source: 60V Max Gate to Source Voltage Should Be: ±20VMax Continues Drain Current is : 500mAMax Pulsed Drain Current is: 500mAMax Power Dissipation is: 830mWMinimum Voltage Required to Conduct: 0.

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push({});Features / Technical Specifications:Package Type: TO-92Transistor Type: N ChannelMax Voltage Applied From Drain to Source: 60V Max Gate to Source Voltage Should Be: ±20VMax Continues Drain Current is : 500mAMax Pulsed Drain Current is: 500mAMax Power Dissipation is: 830mWMinimum Voltage Required to Conduct: 0.

 Applications:Sensor CircuitsAudio amplifier circuitsAudio Amplifier StagesSwitching Loads under 500mA to 1000mATransistor Darlington PairsRadio Frequency CircuitsHow to Safely Long Run in a Circuit:For getting long term and stable performance from BC639 always stay 20% below the maximum ratings.(Pin configuration of the substitute transistors may different from BC639.

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It can be used for many general purpose switching and amplification purposes.Do not drive load more than 500mA and 80V DC.therefore check pin configuration before replacing in a circuit)BC639 Transistor Explained / Description:BC639 is an NPN BJT transistor packed with many good features in its small TO-92 size package.

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With its high collector current capabilities you can use it to drive high current relays.5A or 500mA and some manufacturers are also making it with 1A max collector current capability due to which it can perform well when using as a switch to drive many loads at the same time.

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BC639 is a BJT transistor having many good features in its small package.

The maximum collector current of the transistor is 0.Moreover it can also be used as an amplifier to amplify low level or low gain  audio signals and other types low level or low gain signals to very high level or high gain with its high gain capabilities.

)TIP122 Transistor Explained / Description:A darlington transistor is a pair of two BJT transistors in one transistor package connected such a way to provide very high gain at output.If you want to use TIP121 in your circuit it is recommended to always keep these points in your mind:Do not drive load more than 80V and 5A.

com/datasheet-pdf/view/25367/STMICROELECTRONICS/TIP121.The darlington pair can also be made by using two separate BJT transistors and it is also readily available by manufacturers.

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