| No | Part number | Description ( Function ) | Manufacturers | |
| 36 | 2N2219 | NPN Silicon Transistor |
 Texas |
|
| 35 | 2N2219 | NPN Silicon Small Signal Transistor |
 Motorola Semiconductors |
|
| 34 | 2N2219 | Small Signal Switching Transistor 2N2219, 2N2219A, 2N2219AL Small Signal Switching Transistor NPN Silicon Features • MIL−PRF−19500/251 Qualified • Available as JAN, JANTX, and JANTXV MAXIMUM RATINGS (TA = 25°C unless otherwise noted) Characteristic Symbol Value Collector −Emitter Voltage VCEO 50 Collector −Base Voltage VCBO 75 Emitter −Base Voltage VEBO 6.0 Collector Current − Cont |
 ON Semiconductor |
|
| 33 | 2N2219 | NPN switching transistors DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D111 2N2219; 2N2219A NPN switching transistors Product specification Supersedes data of 1997 May 07 File under Discrete Semiconductors, SC04 1997 Sep 03 Philips Semiconductors Product specification NPN switching transistors FEATURES • High current (max. 800 mA) • Low voltage (max. 40 V). APPLICATIONS • High-speed |
 Philips |
|
| 32 | 2N2219 | HIGH-SPEED SWITCHES 2N2218-2N2219 2N2221-2N2222 HIGH-SPEED SWITCHES DESCRIPTION The 2N2218, 2N2219, 2N2221 and 2N2222 are silicon planar epitaxial NPN transistors in Jedec TO-39 (for 2N2218 and 2N2219) and in Jedec TO-18 (for 2N2221 and 2N2222) metal cases. They are designed for high-speed switching applications at collector currents up to 500 mA, and feature useful current gain over a wide range |
 ST Microelectronics |
|
| 31 | 2N2219 | NPN Silicon Planar Transistors |
 Siemens Semiconductor |
|
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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