Allicdata Part #: | 1086-20679-ND |
Manufacturer Part#: |
2N2221AUA |
Price: | $ 12.06 |
Product Category: | Discrete Semiconductor Products |
Manufacturer: | Microsemi Corporation |
Short Description: | TRANS NPN 50V 0.8A |
More Detail: | Bipolar (BJT) Transistor NPN 50V 800mA 500mW Surf... |
DataSheet: | 2N2221AUA Datasheet/PDF |
Quantity: | 1000 |
100 +: | $ 10.96160 |
Series: | -- |
Packaging: | Bulk |
Part Status: | Active |
Transistor Type: | NPN |
Current - Collector (Ic) (Max): | 800mA |
Voltage - Collector Emitter Breakdown (Max): | 50V |
Vce Saturation (Max) @ Ib, Ic: | 1V @ 50mA, 500mA |
Current - Collector Cutoff (Max): | 50nA |
DC Current Gain (hFE) (Min) @ Ic, Vce: | 40 @ 150mA, 10V |
Power - Max: | 500mW |
Frequency - Transition: | -- |
Operating Temperature: | -65°C ~ 200°C (TJ) |
Mounting Type: | Surface Mount |
Package / Case: | 4-SMD |
Supplier Device Package: | 4-SMD |
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The 2N2221A is an ultra-small general purpose NPN transistor. It belongs to a family of single bipolar junction transistors (BJT), a type of transistor in which the current follows one direction through a semiconductor layer between the emitter and collector. The 2N2221A is typically used for low frequency, low power switching applications, such as switching small loads in integrated circuits.
Overview
The 2N2221A features an NPN structure, with an N-type semiconductor doping its base, and has a maximum collector output current of 0.1A. It is rated for up to 35V collector voltage and up to 500mW of power dissipation. It is also typically used in small-signal audio amplifiers, chosen for its low noise and high gain characteristics. The 2N2221A is also known for its low voltage and current characteristics, making it an ideal candidate to use in low power circuits.
Applications
The 2N2221A transistor finds its place in a variety of audio-related applications, where it enables amplifiers and audio systems to control a variety of audio signals. It is also used in radio frequency circuits and in the control of motors, relays, and other valves. Owing to its low current and power requirements, the 2N2221A is well-suited for use in low-power lighting applications.
Working Principle
A transistor, including the 2N2221A, consists of three layers of semiconductor material - the base, collector, and emitter - forming two p-n junctions. When the base and collector electrodes are adequately biased, current flows from the collector to the emitter, which is due to the development of a voltage drop across the p-n junction of the base and the emitter, thus creating a switch.
Footprint
The 2N2221A transistor is available in several shapes and sizes, including the standard TO-92 plastic encapsulated package, and the common 3-lead plastic encapsulated package. It is also available in a variety of different packages, such as the popular dual-in-line package (DIP) and the surface-mount package (SMD).
Conclusion
The 2N2221A transistor is a versatile, easy-to-use device, suitable for a wide range of applications. With its low noise, high gain characteristics, and low voltage and current requirements, the 2N2221A is ideal for use in low-power lighting applications, audio amplifiers, and radio frequency circuits. It is also readily available in various shapes, sizes, and packages.
The specific data is subject to PDF, and the above content is for reference
Part Number | Manufacturer | Price | Quantity | Description |
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2N2221A | ON Semicondu... | 0.0 $ | 1000 | NPN MED PWR GP AMP TRANSI... |
2N2222AE3 | Microsemi Co... | 0.0 $ | 1000 | SMALL-SIGNAL BJTBipolar (... |
2N2219AL | Microsemi Co... | 0.0 $ | 1000 | TRANS NPN 50V 0.8A TO-39B... |
CP191V-2N2222A-CT | Central Semi... | 0.0 $ | 1000 | TRANS NPN AMP/SWITCH CHIP... |
2N2218A | Central Semi... | -- | 567 | TRANS NPN 40V 0.8A TO-39B... |
2N2221 | Central Semi... | -- | 1000 | THROUGH-HOLE TRANSISTOR-S... |
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2N2222AE4 | Microsemi Co... | 3.03 $ | 1000 | TRANS NPN 50V 0.8A TO-18B... |
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2N2219AE4 | Microsemi Co... | 6.74 $ | 1000 | TRANS NPN 40V 0.8A TO-39B... |
2N2221AUB | Microsemi Co... | 6.78 $ | 1000 | TRANS NPN 50V 0.8ABipolar... |
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2N2221AUA | Microsemi Co... | 12.06 $ | 1000 | TRANS NPN 50V 0.8ABipolar... |
2N2222AUBTX | TT Electroni... | 13.77 $ | 1000 | TRANS NPN 50V 0.8A SMTBip... |
2N2222AUATX | TT Electroni... | 13.78 $ | 1000 | TRANS NPN 50V 0.8A SMTBip... |
2N2222AUBTXV | TT Electroni... | 13.94 $ | 1000 | TRANS NPN 50V 0.8A SMTBip... |
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2N2219 | Central Semi... | -- | 1122 | TRANS NPN 30V 0.8A TO-39B... |
2N2222AUA | TT Electroni... | 13.65 $ | 364 | TRANS NPN 50V 0.8A SMDBip... |
2N2222A | Central Semi... | -- | 85421 | TRANS NPN 40V 0.8A TO-18B... |
2N2222AUB | Microsemi Co... | -- | 1505 | TRANS NPN 50V 0.8A 3PIN S... |
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