Page 1 © 2009, KR Electronics, Inc.
2839, Rev 0, May 19, 2009
KR Electronics
KR 2839 is a 25 MHz elliptic bandpass filter. The 1 dB band-
width is 6 MHz minimum. The filter is group delay and ampli-
tude equalized. Other center frequencies and bandwidths avail-
able. Please consult the factory.
General Description
KR Electronics, Inc.
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
www.krfilters.com
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Web
Email
Phone
Fax
Overall Response
(10 dB/div)
Page 2 © 2009, KR Electronics, Inc.
2839, Rev 0, May 19, 2009
Passband Amplitude & Group Delay
(0.5 dB/div & 10 nsec/div)
KR Electronics
Typical Performance
KR Electronics, Inc.
www.krfilters.com
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Web
Email
Phone
Fax
Overall Stopband to 1 GHz
(10 dB/div)
Page 3 © 2009, KR Electronics, Inc.
2839, Rev 0, May 19, 2009
Parameter Specification
Filter type Bandpass
Center Frequency 25 MHz
Insertion Loss < 6 dB (3.5 dB typical)
Minimum 1 dB Bandwidth 6 MHz min
Attenuation 20 MHz 40 dB min
Attenuation 30 MHz 40 dB min
Passband Ripple < 0.5 dB
Source and Load
50
Ultimate attenuation >50 dB
Ultimate attenuation >50 dB
KR Electronics 2839
KR Electronics, Inc.
Physical Dimensions
Specifications
www.krfilters.com
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Web
Email
Phone
Fax
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.
