| Manufacturer | Part Number | Description |
|---|---|---|
| STK400-490 | 3ch AF Power Amplifier | |
| STK400-040 | AF Power Amplifier | |
| STK400-090 | AF Power Amplifier | |
| STK400-050 | AF Power Amplifier | |
| STK400-290 | AF Power Amplifier | |
| STK400-020 | -Channel AF Power Amplifier | |
| STK400-060 | AF Power Amplifier | |
| STK400-030 | AF Power Amplifier | |
SamHop Microelectronics |
STK400 | N-Channel MOSFET |
| STK400-070 | AF Power Amplifier | |
| STK400-010 | 3ch AF Power Amplifier |