| No | Part number | Description ( Function ) | Manufacturers | |
| 3 | HLB124 | NPN EPITAXIAL PLANAR TRANSISTOR |
 Hi-Sincerity Mocroelectronics |
|
| 2 | HLB124 | NPN EPITAXIAL PLANAR TRANSISTOR UTC HLB124 NPN EPITAXIAL SILICON TRANSISTOR NPN EPITAXIAL PLANAR TRANSISTOR DESCRIPTION The UTC HLB124 is designed for high voltage, high speed switching inductive circuits, and amplifier applications. 1 FEATURES * High Speed Switching * Low Saturation Voltage * High Reliability TO-220 1: BASE 2: COLLECTOR 3: EMITTER *Pb-free plating product number: HLB124L ABSOLUTE MAX |
 Unisonic Technologies |
|
| 1 | HLB124E | NPN EPITAXIAL PLANAR TRANSISTOR |
Hi-Sincerity Mocroelectronics |
|
[1]
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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