| No | Part number | Description ( Function ) | Manufacturers | |
| 4 | 2N3007 | SCRs (Silicon Controlled Rectifiers) |
 Boca Semiconductor Corporation |
|
| 3 | 2N3007 | Bipolar NPNP Device 2N3007 Dimensions in mm (inches). 5.84 (0.230) 5.31 (0.209) 4.95 (0.195) 4.52 (0.178) Bipolar NPNP Device in a Hermetically sealed TO18 Metal Package. Bipolar NPNP Device. VCEO = 100V 0.48 (0.019) 0.41 (0.016) dia. IC = 0.35A All Semelab hermetically sealed products can be processed in accordance with the requirements of BS, CECC and JAN, JANTX, JANTXV |
 Seme LAB |
|
| 2 | 2N3007 | Trans GP BJT 100V 0.35A 3-Pin TO-18 |
 New Jersey Semiconductor |
|
| 1 | 2N3007 | Trans GP BJT 100V 0.35A 3-Pin TO-18 |
New Jersey Semiconductor |
|
[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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