| No | Part number | Description ( Function ) | Manufacturers | |
| 2 | BCP54-10 | NPN Silicon AF Transistors (For AF driver and output stages High collector current) NPN Silicon AF Transistors BCP 54 ... BCP 56 For AF driver and output stages q High collector current q Low collector-emitter saturation voltage q Complementary types: BCP 51 … BCP 53 (PNP) q Type BCP 54 BCP 54-10 BCP 54-16 BCP 55 BCP 55-10 BCP 55-16 BCP 56 BCP 56-10 BCP 56-16 Marking BCP 54 BCP 54-10 BCP 54-16 BCP 55 BCP 55-10 BCP 55-16 BCP 56 BCP 56-10 BCP 56-16 Orderi |
 Siemens Semiconductor Group |
|
| 1 | BCP54-10 | NPN Silicon AF Transistors BCP54...BCP56 NPN Silicon AF Transistors For AF driver and output stages High collector current Low collector-emitter saturation voltage Complementary types: BCP51 ... BCP53 (PNP) 4 3 2 1 VPS05163 Type BCP54 BCP54-10 BCP54-16 BCP55 BCP55-10 BCP55-16 BCP56 BCP56-10 BCP56-16 Marking BCP 54 1=B BCP 54-10 1 = B BCP 54-16 1 = B BCP 55 1=B BCP 55-10 1 = B BCP 55-16 1 = B |
 Infineon Technologies AG |
|
List of most widely used semiconductors
| Part Number | Function | Manufacturers | |
| 1N4007 | The 1N4007 is a rectification diode that is designed for high-voltage applications, typically up to 1000V. It has a maximum current rating of 1A and a forward voltage drop of around 0.7V. |
 Vishay |
|
| LM317 | This is a popular adjustable voltage regulator. |
 ON Semiconductor |
|
6N137 | LM393 | 2N3906 | 2N2222 | TIP120 | 1N5818 | LM324N | A1015 | SMAJ20CA |
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