| Компонент | Описание | Производитель | |
| HUN21XX | Simplifies Circuit Design |
Hi-Sincerity Mocroelectronics |
|
| MMUN21XXLT1G | Bias Resistor Transistors |
ON Semiconductor |
|
| MMUN21XXLT3 | Bias Resistor Transistors |
ON Semiconductor |
|
| MMUN21XXLT3G | Bias Resistor Transistors |
ON Semiconductor |
|
| MUN21XXRT1 | Bias Resistor Transistor |
Leshan Radio Company |
|
| MUN21XXT1 | PNP SILICON BIAS RESISTOR TRANSISTOR |
Motorola, Inc |