| 109921 | 2SK578 | OUT LINE BQUIVALRN CIRCUIT | TOSHIBA |
| 109922 | 2SK579 | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109923 | 2SK579L | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109924 | 2SK579S | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109925 | 2SK58 | Silicon N-Channel Junction Type Dual FET (DC-to-VHF Use, Low Noise) | SONY |
| 109926 | 2SK580 | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109927 | 2SK580L | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109928 | 2SK580S | HIGH SPEED POWER SWITCHING | Hitachi Semiconductor |
| 109929 | 2SK583 | N-Channel Enhancement Silicon MOSFET Analog Switch Applications | SANYO |
| 109930 | 2SK591 | N-Channel MOS Field Effect Power Transistor | NEC |
| 109931 | 2SK591 | N-CHANNEL MOS FIELD EFFECT POWER TRANSISTOR | NEC |
| 109932 | 2SK595 | 2SK595 | Unknow |
| 109933 | 2SK596 | CAPACITOR MICROPHONE APPLICATIONS | SANYO |
| 109934 | 2SK596A | V(gdo): -20V; I(g): 10mA; 100mW; capacitor microphone application | SANYO |
| 109935 | 2SK596B | V(gdo): -20V; I(g): 10mA; 100mW; capacitor microphone application | SANYO |
| 109936 | 2SK596C | V(gdo): -20V; I(g): 10mA; 100mW; capacitor microphone application | SANYO |
| 109937 | 2SK596D | V(gdo): -20V; I(g): 10mA; 100mW; capacitor microphone application | SANYO |
| 109938 | 2SK596E | V(gdo): -20V; I(g): 10mA; 100mW; capacitor microphone application | SANYO |
| 109939 | 2SK601 | Small-signal device - Small-signal FETs - MOS FETs | Panasonic |
|
| 109940 | 2SK606 | Silicon N Channel Junction Type | Panasonic |
| 109941 | 2SK608 | Silicon N Channel Junction Type | Panasonic |
| 109942 | 2SK611 | MOS FIELD EFFECT POWER TRANSISTOR | NEC |
| 109943 | 2SK612 | V(dss): 100V; 20W; fast switching N-channel silicon power MOS FET. For industrial use | NEC |
| 109944 | 2SK612 | MOS Field Effect Power Transistors | Unknow |
| 109945 | 2SK612-Z | MOS Field Effect Power Transistors | Unknow |
| 109946 | 2SK614 | Small-signal device - Small-signal FETs - MOS FETs | Panasonic |
| 109947 | 2SK615 | Small-signal device - Small-signal FETs - MOS FETs | Panasonic |
| 109948 | 2SK619 | SILICON N-CHANNEL MOS FET | Hitachi Semiconductor |
| 109949 | 2SK620 | Silicon N-Channel MOS FET | Panasonic |
| 109950 | 2SK624 | Si N-Channel Junction | National Semiconductor |
| 109951 | 2SK641 | SILICON N-CHANNEL MOS FET | Unknow |
| 109952 | 2SK642 | SILICON N-CHANNEL MOS FET | Unknow |
| 109953 | 2SK643 | 2SK643 | TOSHIBA |
| 109954 | 2SK646 | SILICON N-CHANNEL MOS FET | Hitachi Semiconductor |
| 109955 | 2SK649 | Gallium Arsenide Devices | Panasonic |
| 109956 | 2SK65 | Small-signal device - Small-signal FETs - Junction FETs | Panasonic |
| 109957 | 2SK653 | Gallium Arsenide Devices | Panasonic |
| 109958 | 2SK654 | FAST SWITCHING N-CHANNEL SILICON POWER MOSFET | NEC |
| 109959 | 2SK655 | Small-signal device - Small-signal FETs - MOS FETs | Panasonic |
| 109960 | 2SK656 | Small-signal device - Small-signal FETs - MOS FETs | Panasonic |
