| 3930 |
| Keithley | 7001 | Switch Mainframe | 80-channel switch/control mainframe |
| 4952 |
| Keithley | 708B | Switch Mainframe | Semiconductor Switch Matrix Mainframe - Single-slot Version |
| 9608 |
| Keysight | B2200A | Switch Mainframe | Keysight, B2200A fA Leakage Switch Mainframe |
| 9609 |
| Keysight | B2201A | Switch Mainframe | Keysight, B2201A Low Leakage Switch Mainframe |
| 9610 |
| Keysight | B5250A | Switch Mainframe | Keysight, E5250A Low-leakage Switch Mainframe |