KR Electronics, Inc.
KR Electronics, Inc.
General Description
KR Electronics part number 3212-277.5+ is a 277.5 MHz band-
pass filter. Other frequencies are available. Please consult the
factory.
www.krfilters.com
Features
277.5 MHz Bandpass Filter
3 dB Bandwidth 79 MHz typical
50
Source and Load
Surface Mount
Typical Performance
Overall Response
(5 dB/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2015, KR Electronics, Inc.
3212-277.5+, Rev 0
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 1
KR Electronics, Inc.
KR Electronics 3212-277.5+
Passband Amplitude & Return Loss
(1 dB/div & 5 dB/div)
www.krfilters.com
Overall Response
(5 dB/div)
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2015, KR Electronics, Inc.
3212-277.5+, Rev 0
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 2
KR Electronics, Inc.
KR Electronics 3212-277.5+
Specifications
Parameter
Filter type
Center Frequency
Insertion Loss
1 dB Bandwidth
3 dB Bandwidth
25 dB Bandwidth
30 dB Bandwidth
Source and Load
Specification
Bandpass
277.5 MHz
2 dBa max
45 MHz min
90 MHz typical
180 MHz max
144 MHz typical
50
www.krfilters.com
Notes
0.7 dBa typical
79 MHz typical
137 MHz typical
Physical Dimensions
Notes:
1. Surface mount package
2. Dimensions in inches
3. Max reflow temperature 230° C for 10 sec
4. If boards are cleaned after installation units must be completely dried
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 3
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2015, KR Electronics, Inc.
3212-277.5+, Rev 0
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