KR Electronics, Inc. KR Electronics www.krfilters.com General Description KR 2839 is a 25 MHz elliptic bandpass filter. The 1 dB bandwidth is 6 MHz minimum. The filter is group delay and amplitude equalized. Other center frequencies and bandwidths available. Please consult the factory. Features 25 MHz Center Frequency 6 MHz min 1 dB Bandwidth Group Delay/Phase Equalized Elliptic Response Surface Mount 50 Source and Load Typical Performance Overall Response (10 dB/div) KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2009, KR Electronics, Inc. 2839, Rev 0, May 19, 2009 Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 1 KR Electronics, Inc. KR Electronics www.krfilters.com Typical Performance Passband Amplitude & Group Delay (0.5 dB/div & 10 nsec/div) Overall Stopband to 1 GHz (10 dB/div) KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2009, KR Electronics, Inc. 2839, Rev 0, May 19, 2009 Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 2 KR Electronics, Inc. www.krfilters.com KR Electronics 2839 Specifications Parameter Specification Filter type Bandpass Center Frequency Insertion Loss 25 MHz < 6 dB (3.5 dB typical) Minimum 1 dB Bandwidth 6 MHz min Attenuation 20 MHz 40 dB min Ultimate attenuation >50 dB Attenuation 30 MHz 40 dB min Ultimate attenuation >50 dB Passband Ripple < 0.5 dB Source and Load 50 Physical Dimensions Notes: 1. Surface mount package — Metal cover open frame 2. Dimensions in inches 3. Maximum reflow temperature is 209° C for 10 sec maximum. 4. If boards are cleaned after installation, units must be completely dried. KR Electronics, Inc. 91 Avenel Street Avenel, NJ 07001 © 2009, KR Electronics, Inc. 2839, Rev 0, May 19, 2009 Web Email Phone Fax www.krfilters.com [email protected] (732) 636-1900 (732) 636-1982 Page 3