KR Electronics, Inc.
KR Electronics, Inc.
General Description
KR Electronics part number 3131-18.9 is a 18.9 MHz bandpass
filter. The filter has a minimum 1 dB bandwidth of 5.1 MHz.
Other center frequencies and bandwidths available. Please con-
sult the factory.
www.krfilters.com
Features
18.9 MHz Center Frequency
5.1 MHz min 1 dB Bandwidth
Sharp Transition to Stopband
High Stopband Rejection >80 dB
50
Source and Load
SMA Connectors
Typical Performance
Overall Response
(10 dB/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2014, KR Electronics, Inc.
3131-18.9, 18.9 MHz Bandpass, Rev 0, January 17, 2014
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 1
KR Electronics, Inc.
KR Electronics, Inc.
Typical Performance
www.krfilters.com
Passband Amplitude & Group Delay
(1 dB/div & 200 nsec/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2014, KR Electronics, Inc.
3131-18.9, 18.9 MHz Bandpass, Rev 0, January 17, 2014
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 2
KR Electronics, Inc.
KR Electronics 3131-18.9
Specifications
Parameter
Filter type
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
40 dB Bandwidth
Rejection at 13 MHz
Rejection at 25.25 MHz
Source and Load
Specification
Bandpass
18.9 MHz
2 dB max
5.1 MHz min
5.8 MHz typical
6.4 MHz typical
8.6 MHz typical
80 dB min
80 dB min
50
www.krfilters.com
Notes
0.8 dB typical
16.35 MHz to 21.45 MHz
Physical Dimensions
Notes:
1. SMA(F) to SMA(M)
2. Mounting Inserts 2x 2-56
3. Dimensions in inches
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2014, KR Electronics, Inc.
3131-18.9, 18.9 MHz Bandpass, Rev 0, January 17, 2014
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 3