| 300441 | BC557A | PNP Silicon Transistor for AF pre- and driver stages | Siemens |
| 300442 | BC557A | 50 V, 100 mA, PNP silicon transistor | Siemens |
| 300443 | BC557A | Transistors, RF & AF | Vishay |
| 300444 | BC557ABU | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300445 | BC557AP | General purpose PNP transistor | FERRANTI |
| 300446 | BC557ATA | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300447 | BC557AZL1 | Amplifier Transistors | ON Semiconductor |
| 300448 | BC557B | PNP SILICON PLANAR EPITAXIAL TRANSISTORS | Boca Semiconductor Corporation |
| 300449 | BC557B | 0.500W General Purpose PNP Plastic Leaded Transistor. 45V Vceo, 0.100A Ic, 200 - 400 hFE | Continental Device India Limited |
| 300450 | BC557B | Si-Epitaxial PlanarTransistors | Diotec Elektronische |
| 300451 | BC557B | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300452 | BC557B | Small Signal Transistor (PNP) | General Semiconductor |
| 300453 | BC557B | Silicon PNP Epitaxial Planar Low Noise AF Transistor | IPRS Baneasa |
| 300454 | BC557B | TO-92 Plastic-Encapsulate Biploar Transistors | Micro Commercial Components |
| 300455 | BC557B | Amplifier Transistors | Motorola |
| 300456 | BC557B | Amplifier Transistors | ON Semiconductor |
| 300457 | BC557B | PNP general purpose transistors | Philips |
| 300458 | BC557B | PNP Silicon Transistor for AF pre- and driver stages | Siemens |
| 300459 | BC557B | 50 V, 100 mA, PNP silicon transistor | Siemens |
|
| 300460 | BC557B | SMALL SIGNAL PNP TRANSISTOR | ST Microelectronics |
| 300461 | BC557B | Transistors, RF & AF | Vishay |
| 300462 | BC557B-AP | SMALL SIGNAL PNP TRANSISTOR | SGS Thomson Microelectronics |
| 300463 | BC557B-AP | SMALL SIGNAL PNP TRANSISTOR | ST Microelectronics |
| 300464 | BC557BBU | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300465 | BC557BP | General purpose PNP transistor | FERRANTI |
| 300466 | BC557BRL1 | Amplifier Transistors | ON Semiconductor |
| 300467 | BC557BTA | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300468 | BC557BTAR | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300469 | BC557BTF | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300470 | BC557BTFR | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300471 | BC557BU | PNP Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 300472 | BC557BZL1 | Amplifier Transistors | ON Semiconductor |
| 300473 | BC557C | PNP SILICON PLANAR EPITAXIAL TRANSISTORS | Boca Semiconductor Corporation |
| 300474 | BC557C | 0.500W General Purpose PNP Plastic Leaded Transistor. 45V Vceo, 0.100A Ic, 420 - 800 hFE | Continental Device India Limited |
| 300475 | BC557C | Si-Epitaxial PlanarTransistors | Diotec Elektronische |
| 300476 | BC557C | Small Signal Transistor (PNP) | General Semiconductor |
| 300477 | BC557C | Silicon PNP Epitaxial Planar Low Noise AF Transistor | IPRS Baneasa |
| 300478 | BC557C | TO-92 Plastic-Encapsulate Biploar Transistors | Micro Commercial Components |
| 300479 | BC557C | Amplifier Transistors | Motorola |
| 300480 | BC557C | Amplifier Transistors | ON Semiconductor |
