| TDF | TT | N | FFFF | BW | XXXX | 
| Dielectric Filter | Type BP = Bandpass BR = Band Reject (Notch) LP = Lowpass (coax. LP) | Poles (sections) | Center Frequency [MHz] | Bandwidth [MHz] | Specific Code | 
| Example: | TDF-BP-3-1350-25-H251 | 
| T-CERAM dielectric filter BP = Band Pass 3 poles Center frequency = 1350 MHz Bandwidth = 25 MHz H251 - individual product code |