This file is about the characteristics and specifications of the TFS340 filter, including insertion loss, center frequency, passband ripple, relative attenuation and other parameters
This document details the technical specifications of the Telefilter TFS340 band‑pass filter. It includes measurement conditions, insertion loss, nominal and centre frequencies, pass‑band ripple, relative attenuation across frequency ranges, and intermodulation performance.
Additional sections cover construction and pin connections, stability under shock and vibration, temperature‑controlled reflow profiles, and packaging guidelines for tape‑and‑reel handling. The specification also lists version history and contact information for Telefilter GmbH.
| Insertion loss | 2.50 dB max (3.0 dB limit) |
|---|---|
| Nominal frequency | 340.0 MHz |
| Centre frequency | 340.0 MHz |
| Pass band ripple | +10 MHz max. 3.0 dB |
| Relative attenuation (80‑100 MHz) | 55 dB min. (50 dB typical) |
| Intermodulation IP3 | ≥ 20.0 dBm |
| Input power level | ≤ 10.0 dBm |
| Permissible DC voltage | ≤ 12.0 V |
| Operating temperature range | -25 °C to 75 °C |
| Storage temperature range | -40 °C to +85 °C |
| Temperature coefficient of frequency | -65 ppm/K |
| Packaging (tape & reel) | IEC 286‑3, max 3000 pieces/reel, min bend radius 45 mm |
The nominal frequency is specified as 340.0 MHz.
Insertion loss is limited to a maximum of 2.5 dB (with a 3.0 dB limit).
The filter can operate from –25 °C up to 75 °C.
It follows IEC 286‑3 tape‑and‑reel standards, with up to 3000 filters per reel and a minimum bending radius of 45 mm.