| 340121 | BUT12TU | NPN Silicon Transistor | Fairchild Semiconductor |
| 340122 | BUT12XI | Silicon Diffused Power Transistor | Philips |
| 340123 | BUT131 | V(cesm): 850V; 80W; silicon diffused power transistor | Philips |
| 340124 | BUT131A | V(cesm): 1000V; 80W; silicon diffused power transistor | Philips |
| 340125 | BUT131H | V(cesm): 850V; 80W; silicon diffused power transistor | Philips |
| 340126 | BUT14 | Trans GP BJT NPN 450V 5A 3-Pin(3+Tab) TO-220AB Bulk | New Jersey Semiconductor |
| 340127 | BUT18 | Silicon diffused power transistors | Philips |
| 340128 | BUT18 | Silicon NPN Power Transistors TO-220C package | Savantic |
| 340129 | BUT18A | Silicon diffused power transistors | Philips |
| 340130 | BUT18A | Silicon NPN Power Transistors TO-220C package | Savantic |
| 340131 | BUT18AF | Silicon diffused power transistors | Philips |
| 340132 | BUT18AF | Silicon NPN Power Transistors TO-220Fa package | Savantic |
| 340133 | BUT18F | Silicon diffused power transistors | Philips |
| 340134 | BUT18F | Silicon NPN Power Transistors TO-220Fa package | Savantic |
| 340135 | BUT211 | Silicon Diffused Power Transistor | Philips |
| 340136 | BUT211X | Silicon Diffused Power Transistor | Philips |
| 340137 | BUT232V | NPN TRANSISTOR POWER MODULE | SGS Thomson Microelectronics |
| 340138 | BUT232V | NPN TRANSISTOR POWER MODULE | ST Microelectronics |
| 340139 | BUT30 | NPN TRANSISTOR POWER MODULE | ST Microelectronics |
|
| 340140 | BUT30V | NPN TRANSISTOR POWER MODULE | SGS Thomson Microelectronics |
| 340141 | BUT30V | NPN TRANSISTOR POWER MODULE | ST Microelectronics |
| 340142 | BUT32V | NPN TRANSISTOR POWER MODULE | SGS Thomson Microelectronics |
| 340143 | BUT32V | NPN TRANSISTOR POWER MODULE | ST Microelectronics |
| 340144 | BUT33 | 56 AMPERES NPN SILICON POWER DARLINGTON TRANSISTOR 600 VOLTS 250 WATTS | Motorola |
| 340145 | BUT33 | 56 AMPERES NPN SILICON POWER DARLINGTON TRANSISTOR 600 VOLTS 250 WATTS | ON Semiconductor |
| 340146 | BUT33-D | SWITCHMODE Series NPN Silicon Power Darlington Transistors with Base-Emitter Speedup Diode | ON Semiconductor |
| 340147 | BUT34 | 50 AMPERES NPN SILICON POWER DARLINGTON TRANSISTOR 850 VOLTS 250 WATTS | Motorola |
| 340148 | BUT56 | Silicon NPN Power Transistors TO-220C package | Savantic |
| 340149 | BUT56 | Silicon NPN Power Transistor | TEMIC |
| 340150 | BUT56A | Silicon NPN Power Transistors TO-220C package | Savantic |
| 340151 | BUT56A | Silicon NPN Power Transistor | TEMIC |
| 340152 | BUT56A | NPN EPITAXIAL SILICON TRANSISTOR(HIGH VOLTAGE SWITCHING USE IN HORIZONTAL DEFLECTION OUTPUT STAGE) | Wing Shing Computer Components |
| 340153 | BUT56AF | Silicon NPN Power Transistors TO-220Fa package | Savantic |
| 340154 | BUT70 | HIGH POWER NPN SILICON TRANSISTOR | SGS Thomson Microelectronics |
| 340155 | BUT70 | HIGH POWER NPN SILICON TRANSISTOR | ST Microelectronics |
| 340156 | BUT70W | HIGH VOLTAGE NPN POWER TRANSISTOR | SGS Thomson Microelectronics |
| 340157 | BUT70W | HIGH VOLTAGE NPN POWER TRANSISTOR | ST Microelectronics |
| 340158 | BUT72 | NPN MULTI-EPITAXIAL POWER TRANSISTOR | SemeLAB |
| 340159 | BUT76 | Silicon NPN Power Transistors TO-220C package | Savantic |
| 340160 | BUT76 | Silicon NPN Power Transistors | Vishay |
