Below are charts for TEE and PI attenuation values based on a 50-ohm input and output system impedance. The tables are also available to download at the link below.
TEE Attenuators
| Attenuation (dB) | Series R ( 2 required) (ohms) | Parallel R (ohms) |
| 0.1 | 0.29 | 4300 |
| 0.5 | 1.44 | 868 |
| 1.0 | 2.88 | 433 |
| 2.0 | 5.73 | 215 |
| 3.0 | 8.55 | 142 |
| 4.0 | 11.3 | 104.8 |
| 5.0 | 14.0 | 82.2 |
| 6.0 | 16.6 | 67 |
| 7.0 | 19.1 | 55.8 |
| 8.0 | 21.5 | 47.3 |
| 9.0 | 23.8 | 40.6 |
| 10.0 | 26 | 35 |
PI Attenuators
| Attenuation (dB) | Parallel R ( 2 required) (ohms) | Series R (ohms) |
| 0.1 | 8686 | 0.58 |
| 0.5 | 1738 | 2.88 |
| 1.0 | 869.5 | 5.8 |
| 2.0 | 436 | 11.6 |
| 3.0 | 292.4 | 17.6 |
| 4.0 | 221 | 23.8 |
| 5.0 | 178.5 | 30.4 |
| 6.0 | 150.5 | 37.4 |
| 7.0 | 130.7 | 44.9 |
| 8.0 | 116 | 52.8 |
| 9.0 | 105 | 61.6 |
| 10.0 | 96 | 71 |