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 20Motorola MRF422 Line NPN Silicon RF Power Transistor  US $928.00
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 10pcs MRF422 RF Line NPN Silicon RF Power Transistor US $513.00
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 10Motorola MRF422 Line NPN Silicon RF Power Transistor US $512.00
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How can a small silicon NPN transistor amplifies? Please explain in subatomic level....?
I want to know in terms of movement of subatomic particles in the silicon tansistor, that how can they contribute in the amplification action of a transistor?
Also, what makes NPN transistor widely accepted industrially, than PNP transistor?
NPN and PNP are basically interchangeable at this point, since they are both mass produced. Some specific small-signal amps require one or the other, but for the most part you can design a circuit that uses either with negligible drawbacks.
The mechanics of a transistor are based in the fact that silicon is a semiconductor. This means that silicon (and other elements like Gallium, Arsenide, Aluminum, etc) can have characteristics of both conductors and insulators. Electrons become excited and jump into what is called the 'conduction' band, where they obviously manifest conductive properties. The consequence is that the electrons leave an 'electron hole' in the valence band. These holes effectively have the same charge as a positron.
There is a ton of theory, I suggest reading up on some basic theory via the internet.
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20Motorola MRF422 Line NPN Silicon RF Power Transistor US $928.00
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10pcs MRF422 RF Line NPN Silicon RF Power Transistor US $513.00
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10Motorola MRF422 Line NPN Silicon RF Power Transistor US $512.00
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 5 Motorola MRF422 Line NPN Silicon RF Power Transistor US $258.98
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 5 Motorola MRF422 Line NPN Silicon RF Power Transistor US $258.98
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 1000x 2SC3357 RF C3357 SOT 89 NPN Silicon RF Transistor US $246.99
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 500 PCS TIP122 TO 220 NPN Silicon Transistors FREE Registered Mail US $169.99
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 10pcs x MRF648 NPN SILICON RF POWER TRANSISTOR US $168.00
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 10x MRF648 NPN SILICON RF POWER TRANSISTOR US $166.99
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 10PCS NEW MRF648 NPN SILICON RF POWER TRANSISTOR US $166.00
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 10Motorola MRF648 NPN SILICON RF POWER TRANSISTOR m US $166.00
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 3pcs MRF422 RF Line NPN Silicon RF Power Transistor US $163.00
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 5000 PCS S9014C S9014 TO 92 NPN Silicon Transistor US $139.99
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 8x MRF648 NPN SILICON RF POWER TRANSISTOR m US $138.00
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 MRF847 NPN silicon RF power transistor BY MOT OF 5 US $109.00
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 5pcs MRF648 NPN SILICON RF POWER TRANSISTOR US $105.00
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 2 Motorola MRF422 Line NPN Silicon RF Power Transistor US $100.99
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 2 Motorola MRF422 Line NPN Silicon RF Power Transistor US $100.99
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 2Motorola MRF422 Line NPN Silicon RF Power Transistor US $100.98
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 2Motorola MRF422 Line NPN Silicon RF Power Transistor US $100.00
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 One 1 NOS GE 288 NPN Silicon RF Power Transistor for Large Signal Amplifier US $95.16
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 Monsterpiece NPN Silicon Fuzz Face True Bypass US $90.00
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 5x MRF648 NPN SILICON RF POWER TRANSISTOR US $90.00
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 5Motorola MRF648 NPN SILICON RF POWER TRANSISTOR m US $89.99
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 BLV31 NPN SILICON RF POWER TRANSISTOR LOT OF 5 US $89.00
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 2pcs x MRF648 NPN SILICON RF POWER TRANSISTOR US $59.90
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 2Motorola MRF648 NPN SILICON RF POWER TRANSISTOR m US $59.90
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 2x MRF648 NPN SILICON RF POWER TRANSISTOR US $59.50
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 2x MRF648 NPN SILICON RF POWER TRANSISTOR m US $59.00
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 2PCS NEW MRF648 NPN SILICON RF POWER TRANSISTOR US $58.00
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 Motorola MRF422 RF Line NPN Silicon RF Power Transistor US $57.00
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 Motorola MRF422 Line NPN Silicon RF Power Transistor US $53.90
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 1 Motorola MRF422 Line NPN Silicon RF Power Transistor US $53.89
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 1 Motorola MRF422 Line NPN Silicon RF Power Transistor US $53.89
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 WEP811 npn rg power silicon transistor new US $50.00
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 5 pcs MRF260 Silicon NPN Transistor RF Power NTE342 US $50.00
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 10 pcs NPN Silicon Power Transistors BUX48 BUX48A ST US $49.99
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 2N6166 NPN SILICON RF POWER TRANSISTOR US $49.95
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 2SC3089 Silicon NPN Power Transistors LOT OF 10 US $49.00
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 MRF326 NPN silicon RF power transistor US $49.00
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 BUX82 800 V 6 A 60 W NPN silicon power LOT OF 10 US $49.00
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