| Electronic component: | Description: | Manuf. | Package | Pins | T°min | T°max | Datasheet |
|---|
| BF550 | PNP medium frequency transistor. | Philips-Semiconductors | SOT23 | 3 | -65°C | 150°C | 45 K |
| BF550 | PNP medium frequency transistor | Philips-Semiconductors | SOT23 | - | - | - | 41 K |
| BF550 | PNP silicon RF transistor | Infineon-formely-Siemens | - | 3 | - | - | 92 K |
| BF554 | NPN silicon RF transistor | Infineon-formely-Siemens | - | 3 | - | - | 60 K |
| BF556A | N-channel silicon junction field-effect transistors | Philips-Semiconductors | SOT23 | - | - | - | 100 K |
| BF556B | N-channel silicon junction field-effect transistors | Philips-Semiconductors | SOT23 | - | - | - | 100 K |
| BF556C | N-channel silicon junction field-effect transistors | Philips-Semiconductors | SOT23 | - | - | - | 100 K |
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