Frequency Range from 500 Hz to 1 GHz

Butterworth Bandpass Filters offer a monotonic passband and stopband response. Available packages include PCB, radial RF pins, SMT, SMA and BNC connectorized cases. These are available for low frequency, 10-20 kHz RFID applications, RF and microwave applications including ADC and DAC low distortion testing, data acquisition, receivers and transmitters. Specify any center frequency from 500 Hz to 1 GHz.

Series NumberNumber of Pole Pairs (Elements)-3dBc Bandwidth Selection
KB33 (6)3% to 25% fo
KB44 (8)3% to 25% fo
KB55 (10)3% to 25% fo
KB66 (12)3% to 25% fo
KB77 (14)5% to 25% fo
KB88 (16)5% to 25% fo
KB99 (18)5% to 25% fo
Part Number Derivation:
  • Operating Temperature Range:
    0°C to +70°C
  • VSWR at fo: 1.5:1 Typical
  • Input Power: 20 mW
  1. Series, KB
  2. Number of poles, 6
  3. The “T” option specifies a filter with low THD for ADC/DAC testing. When selected therein, THD is > -80dBc, -96dBc typical.
  4.  “R” RoHS compliant. Allow for longer lead time.
  5. The Center Frequency, fo
  6. The -3dBc passband bandwidth. It may also be specified as a percentage of fo. Thus, instead of 535 kHz, use 5P.
  7. Terminations
  8. Case selection from the case selection guide. “T” option cases are larger than standard.

All of TTE’s products are “made in the USA”.   Most are delivered within 2-3 weeks.  Expedited lead times of 3-5 days are available on many products.  Please call 1-716-532-2234 (or 1-310-478-8224) or email tte@tte.com for assistance.  More information about TTE’s custom design expertise is provided in Capabilities.