TFS411

Features:






Specifications






Description

      This is the description about TFS411 of the VI telefilter filter specification. The maximum of the pass band attenuation amax is defined as the insertion loss ae. The nominal frequency fN is fixed at 411,0 MHz without tolerance. The given values for the absoult attenuation ae have to be reached at the frequencies given below even if the centre frequency fc is shifted due to the temperature coefficient of frequency TCf in the operating temperature range and due to a production tolerance for the centre frequency fc.
      Here are the TFS411 features: Ambient temperature is 23°C. Input power level is 0dBm. Terminating impedances for input is 50. Terminating impedances for output is 50.
      The TFS411 absolute Maximum Ratings are these (TA = 25°C). Insertion loss (within PB)) is 4,8dB. Nominal frequency is 411 MHz. Pass Band is fN ± 2,5 MHz. Operating temperature range is from -25°C to +80°C. Storage Temperature Range is from - 30 °C to + 85 °C. Temperature coefficient of frequency is - 0,032ppm/K2.
      These are the Stability Characteristics. After the following tests the filter shall meet the whole specification: 1. Shock: 500g, 18 ms, half sine wave, 3 shocks each plane; DIN IEC 68 T2 27. 2. Vibration: 10 Hz to 500 Hz, 0,35 mm or 5g respectively, 1 octave per min, 10 cycles per plan, 3 plans; DIN IEC 68 T2 6. 3. Change of -55 °C to 125°C / 30 min. each / 10 cycles temperature: DIN IEC 68 part 2 14 Test N. 4. Resistance to solder heat (reflow): reflow possible: twice max.; for temperature conditions, please refer to the attached "Air reflow temperature conditions".
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