| Mfr. Part No. | Description |
| 109E | Nominal Impedance (Ohms) (Pins 1-3), Primary, 600 ct |
| 109F | Nominal Impedance (Ohms) (Pins 1-3), Primary, 600 ct |
| 109G | Nominal Impedance (Ohms) (Pins 1-3), Primary, 600 ct |
| 109H | Nominal Impedance (Ohms) (Pins 1-3), Primary, 600 ct |
| 109J | Nominal Impedance (Ohms) (Pins 1-3), Primary, 1K ct |
| 109K | Nominal Impedance (Ohms) (Pins 1-3), Primary, 1.5K ct |
| 109L | Nominal Impedance (Ohms) (Pins 1-3), Primary, 10K ct |
| 109N | Nominal Impedance (Ohms) (Pins 1-3), Primary, 10K ct |
| 109R | Nominal Impedance (Ohms) (Pins 1-3), Primary, 10K ct |
| 109T | Nominal Impedance (Ohms) (Pins 1-3), Primary, 10K ct |