SMD Transistor und Dioden Code Liste U
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| Code | Typ | Hersteller | Base | Gehäuse | Ersatztyp |
| U | BB545 | Siemens (Infineon) | I | SOD323 | 20-2pF varicap |
| U | BB145 | Philips | I | SOD523 | Low Voltage Varicap |
| U1 | BCX19 | Motorola (ON Semiconductors) | N | SOT123 | BC337 |
| U1p | BCX19 | Philips | N | SOT123 | BC337 |
| U1t | BCX19 | Philips | N | SOT123 | BC337 |
| U1 | BGX50A | Siemens (Infineon) | BQ | SOT143 | quad ring Si sw diodes |
| U1A | 3SK230A | NEC | UQ | SOT143 | dg RF mosfet |
| U1B | 3SK230B | NEC | UQ | SOT143 | dg RF mosfet |
| U1C | 3SK231C | NEC | UQ | SOT143 | dg RF mosfet |
| U1D | 3SK231D | NEC | UQ | SOT143 | dg RF mosfet |
| U1E | 3SK252E | NEC | UQ | SOT143 | dg RF mosfet |
| U1E | 3SK254E | NEC | UQ | SOT343 | dg RF mosfet |
| U1G | 3SK253G | NEC | UQ | SOT143 | dg RF mosfet |
| U1G | 3SK255G | NEC | UQ | SOT343 | dg RF mosfet |
| U2 | BCX20 | Philips | N | SOT123 | BC338 |
| U2t | BCX20 | Philips | N | SOT123 | BC338 |
| U3 | BSS64 | Philips | N | SOT123 | 120V 0.25A 0.2W |
| U4 | BCX19R | Philips | R | SOT123R | BC337 |
| U5 | BCX20R | Philips | R | SOT123R | BC338 |
| U6 | BSS64R | Philips | R | SOT123R | 120V 0.25A 0.2W |
| U7 | BSR13 | SGS Thompson | N | SOT123 | 2N2222 |
| U7 | 3SK320 | Tosh | DW | SC61 | dg GaAsfet |
| U7p | BSR13 | Philips | N | SOT123 | 2N2222 |
| U7t | BSR13 | Philips | N | SOT123 | 2N2222 |
| U8 | BSR14 | SGS Thompson | N | SOT123 | 2N2222A |
| U8p | BSR14 | Philips | N | SOT123 | 2N2222A |
| U8t | BSR14 | Philips | N | SOT123 | 2N2222A |
| U16 | 2SC4183 | NEC | N | npn RF 5V fT1GHz hFE 60-120 | |
| U17 | 2SC4183 | NEC | N | npn RF 5V fT1GHz hFE 90-180 | |
| U18 | 2SC4183 | NEC | N | npn RF 5V fT1GHz hFE 120-240 | |
| U21 | 2SC4185 | NEC | N | npn RF 10V fT2.4GHz hFE 40-80 | |
| U22 | 2SC4185 | NEC | N | npn RF 10V fT2.4GHz hFE 60-120 | |
| U23 | 2SC4185 | NEC | N | npn RF 10V fT2.4GHz hFE 90-180 | |
| U55 | 3SK134B | NEC | UQ | SOT143 | dg mosfet |
| U55 | 3SK245 | NEC | UQ | SOT343 | dg mosfet |
| U56 | 3SK134B | NEC | UQ | SOT143 | dg mosfet |
| U56 | 3SK245 | NEC | UQ | SOT343 | dg mosfet |
| U65 | 3SK135A | NEC | UQ | SOT143 | dg mosfet |
| U66 | 3SK135A | NEC | UQ | SOT143 | dg mosfet |
| U71 | BSR13R | SGS Thompson | R | SOT123R | 2N2222 |
| U71 | 3SK177 | NEC | UQ | SOT143 | dg GaAsfet Idss 5-15mA |
| U71 | 3SK299 | NEC | UQ | SOT343 | dg GaAsfet Idss 5-15mA |
| U72 | 3SK177 | NEC | UQ | SOT143 | dg GaAsfet Idss10-25mA |
| U72 | 3SK299 | NEC | UQ | SOT343 | dg GaAsfet Idss 10-25mA |
| U73 | 3SK177 | NEC | UQ | SOT143 | dg GaAsfet Idss 20-35mA |
| U73 | 3SK299 | NEC | UQ | SOT343 | dg GaAsfet Idss 20-35mA |
| U74 | 3SK177 | NEC | UQ | SOT143 | dg GaAsfet Idss 30-40mA |
| U74 | 3SK299 | NEC | UQ | SOT343 | dg GaAsfet Idss 30-40mA |
| U76 | 3SK206 | NEC | UQ | SOT143 | dg GaAsfet Idss 10-25mA |
| U77 | 3SK206 | NEC | UQ | SOT143 | dg GaAsfet Idss 20-35mA |
| U78 | 3SK206 | NEC | UQ | SOT143 | dg GaAsfet Idss 30-50mA |
| U79 | 3SK206 | NEC | UQ | SOT143 | dg GaAsfet Idss 45-80mA |
| U81 | BSR14R | SGS Thompson | R | SOT123R | 2N2222A |
| U87 | 3SK176A | NEC | UQ | SOT143 | dg mosfet |
| U88 | 3SK176A | NEC | UQ | SOT143 | dg mosfet |
| U90 | 3SK223 | NEC | UQ | SOT143 | dg mosfet |
| U90 | 3SK243 | NEC | UQ | SOT343 | dg mosfet |
| U91 | 3SK223 | NEC | UQ | SOT143 | dg mosfet |
| U91 | 3SK243 | NEC | UQ | SOT143 | dg mosfet |
| U92 | BSR17A | Fairchild | N | SOT123 | 2N3904 |
| U92p | BSR17A | Philips | N | SOT123 | 2N3904 |
| U94 | 3SK224D | NEC | UQ | SOT143 | dg mosfet |
| U94 | 3SK244D | NEC | UQ | SOT343 | dg mosfet |
| U95 | 3SK224E | NEC | UQ | SOT143 | dg mosfet |
| U95 | 3SK244E | NEC | UQ | SOT143 | dg mosfet |
| UB | 2SB852K | Rohm | N | pnp darlington comp 2SD1383K | |
| UC | MSC2404-C | Motorola (ON Semiconductors) | H | npn RF 450MHz fT 20V | |
| UF | 3SK293 | Tosh | DW | SC61 | dg mosfet UHF amp, 3SK291 |
| UH | 3SK260 | Tosh | DW | SC61 | dg mosfet TV mixer, 3SK151 |
| UI | 3SK259 | Tosh | DW | SC61 | dg mosfet VHF/UHF amp, 3SK253 |
| UK | 3SK294 | Tosh | DW | SC61 | dg mosfet VHF/UHF amp, 3SK292 |
| UN | 3SK274 | Tosh | DW | SC61 | dg GaAsfet UHF amp, 3SK240 |
| UO | 3SK249 | Tosh | DW | SC61 | dg mosfet UHF amp, 3SK232 |
| UP | CMDZ11L | CSC | I | SOD323 | zener 250mW Iz 0.5mA 11V |
| UR | 3SK256 | Tosh | DW | SC61 | dg mosfet UHF amp, 3SK207 |
| UT | 3SK257 | Tosh | DW | SC61 | dg mosfet VHF amp, 3SK225 |
| UU | 3SK258 | Tosh | DW | SC61 | dg mosfet VHF amp, 3SK226 |
