| 273641 | BC549B | Low Noise Transistors | ON Semiconductor |
| 273642 | BC549B | NPN general purpose transistors | Philips |
| 273643 | BC549B | 30 V, 100 mA, NPN silicon transistor | Siemens |
| 273644 | BC549B | Discrete Devices-Transistor-NPN Bipolar Transistor | Taiwan Semiconductor |
| 273645 | BC549B-D | Low Noise Transistors NPN Silicon | ON Semiconductor |
| 273646 | BC549BBU | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273647 | BC549BTA | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273648 | BC549BTAR | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273649 | BC549BTF | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273650 | BC549BTFR | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273651 | BC549BU | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273652 | BC549C | 0.625W General Purpose NPN Plastic Leaded Transistor. 20V Vceo, 0.100A Ic, 420 - 800 hFE | Continental Device India Limited |
| 273653 | BC549C | Si-Epitaxial PlanarTransistors | Diotec Elektronische |
| 273654 | BC549C | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273655 | BC549C | Small Signal Transistor (NPN) | General Semiconductor |
| 273656 | BC549C | Low Noise Transistors | Motorola |
| 273657 | BC549C | Low Noise Transistors | ON Semiconductor |
| 273658 | BC549C | NPN general purpose transistors | Philips |
| 273659 | BC549C | 30 V, 100 mA, NPN silicon transistor | Siemens |
|
| 273660 | BC549C | Discrete Devices-Transistor-NPN Bipolar Transistor | Taiwan Semiconductor |
| 273661 | BC549CBU | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273662 | BC549CTA | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273663 | BC549CTF | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273664 | BC549CTFR | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273665 | BC549TAR | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273666 | BC549TF | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273667 | BC549TFR | NPN Epitaxial Silicon Transistor | Fairchild Semiconductor |
| 273668 | BC54PA | 45 V, 1 A NPN medium power transistor | Nexperia |
| 273669 | BC54PA | 45 V, 1 A NPN medium power transistor | NXP Semiconductors |
| 273670 | BC54PAS | 45 V/60 V/80 V, 1 A NPN medium power transistors | Nexperia |
| 273671 | BC55-10PA | 60 V, 1 A NPN medium power transistor | Nexperia |
| 273672 | BC55-10PA | 60 V, 1 A NPN medium power transistor | NXP Semiconductors |
| 273673 | BC55-10PAS | 45 V/60 V/80 V, 1 A NPN medium power transistors | Nexperia |
| 273674 | BC55-16PA | 60 V, 1 A NPN medium power transistor | Nexperia |
| 273675 | BC55-16PA | 60 V, 1 A NPN medium power transistor | NXP Semiconductors |
| 273676 | BC55-16PAS | 45 V/60 V/80 V, 1 A NPN medium power transistors | Nexperia |
| 273677 | BC550 | 0.625W General Purpose NPN Plastic Leaded Transistor. 45V Vceo, 0.100A Ic, 110 - 800 hFE | Continental Device India Limited |
| 273678 | BC550 | Switching and Applications | Fairchild Semiconductor |
| 273679 | BC550 | General Purpose Transistor | Korea Electronics (KEC) |
| 273680 | BC550 | NPN SILICON AF SMALL SIGNAL TRANSISTORS | Micro Electronics |
