| Nr. | Part Name | Description | Manufacturer by |
| 42521 | 2SC2500 | TRANSISTOR SILICON NPN EPITAXIAL TYPE (PCT PROCESS) STROBE FLASH APPLICATIONS MEDIUM POWER AMPLIFIER APPLICATIONS | TOSHIBA |
| 42522 | 2SC2502 | POWER TRANSISTORS(6.0A,400V,50W) | MOSPEC Semiconductor |
| 42523 | 2SC2504 | 100W T10V | Shindengen |
| 42524 | 2SC2510 | TRANSISTOR SILICON NPN EPITAXIAL PLANAR TYPE 2~30MHz SSB LINEAR POWER AMPLIFIER APPLICATIONS (28V SUPPLY VOLTAGE USE) | TOSHIBA |
| 42525 | 2SC2512 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42526 | 2SC2512 | Silicon NPN Triple Diffused | Hitachi Semiconductor |
| 42527 | 2SC2517 | Silicon transistor | NEC |
| 42528 | 2SC2517-S | Silicon transistor | NEC |
| 42529 | 2SC2517-Z | Silicon transistor | NEC |
| 42530 | 2SC2518 | NPN SILICON POWER TRANSISTOR | NEC |
| 42531 | 2SC2518 | NPN SILICON POWER TRANSISTOR | NEC |
| 42532 | 2SC2519 | SILICON NPN EPITAXIAL PLANAR | Panasonic |
| 42533 | 2SC2519 | SILICON NPN EPITAXIAL PLANAR | Panasonic |
| 42534 | 2SC2525 | SILICON HIGH SPEED POWER TRANSISTOR | Fujitsu Microelectronics |
| 42535 | 2SC2525 | TRANSISTOR (AUDIO FREQUENCY POWER AMPLIFIER APPLICATIONS) | TOSHIBA |
| 42536 | 2SC2526 | SILICON HIGH SPEED POWER TRANSISTOR | Fujitsu Microelectronics |
| 42537 | 2SC2527 | SILICON HIGH SPEED POWER TRANSISTOR | Fujitsu Microelectronics |
| 42538 | 2SC2527 | SILICON HIGH SPEED POWER TRANSISTOR | Fujitsu Microelectronics |
| 42539 | 2SC2532 | Transistor Silicon NPN Epitaxial Type (PCT process) Audio Frequency Amplifier Applications Driver Stage for LED Lamp Applications Temperature Compensation Applications | TOSHIBA |
| 42540 | 2SC2538 | RF POWER TRANSISTOR NPN EPITAXIAL PLANAR TYPE | Mitsubishi Electric Corporation |
| 42541 | 2SC2539 | RF POWER TRANSISTOR NPN EPITAXIAL PLANAR TYPE | Mitsubishi Electric Corporation |
| 42542 | 2SC2540 | RF POWER TRANSISTOR NPN EPITAXIAL PLANAR TYPE | Mitsubishi Electric Corporation |
| 42543 | 2SC2542 | MOLD TYPE BIPOLAR TRANSISTORS | Unknow |
| 42544 | 2SC2542 | High speed switching transistor | COLLMER SEMICONDUCTOR INC |
| 42545 | 2SC2542 | MOLD TYPE BIPOLAR TRANSISTORS | Unknow |
| 42546 | 2SC2542 | High speed switching transistor | COLLMER SEMICONDUCTOR INC |
| 42547 | 2SC2543 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42548 | 2SC2543 | Silicon NPN Epitaxial | Hitachi Semiconductor |
| 42549 | 2SC2544 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42550 | 2SC2544 | Silicon NPN Epitaxial | Hitachi Semiconductor |
| 42551 | 2SC2545 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42552 | 2SC2545 | Silicon NPN Epitaxial | Hitachi Semiconductor |
| 42553 | 2SC2545 | Transistors>Amplifiers/Bipolar | Renesas |
| 42554 | 2SC2546 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42555 | 2SC2546 | Silicon NPN Epitaxial | Hitachi Semiconductor |
| 42556 | 2SC2546 | Transistors>Amplifiers/Bipolar | Renesas |
| 42557 | 2SC2547 | Silicon NPN Transistor | Hitachi Semiconductor |
| 42558 | 2SC2547 | Silicon NPN Epitaxial | Hitachi Semiconductor |
| 42559 | 2SC2547 | Transistors>Amplifiers/Bipolar | Renesas |
| 42560 | 2SC2551 | Transistor Silicon NPN Epitaxial Type (PCT process) Hight Voltage Control Applications Plasma Display, Nixie Tube Driver Applications Cathode Ray Tube Brightness Control Applications | TOSHIBA |
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