KR Electronics, Inc.
KR Electronics
General Description
www.krfilters.com
KR 2881 is a 440 MHz bandpass filter. The filter has a minimum
Features
3 dB bandwidth of 50 MHz (typically 70 MHz). The typical 60
440 MHz Center Frequency
dB bandwidth is 120 MHz. Other passband frequencies are avail-
3 dB Bandwidth 50 MHz minimum
able. Please consult the factory.
Sharp Transition to the Stopband
Surface mount
50
Source and Load
Typical Performance
Passband Amplitude & Group Delay
(1 dB/div and 10 nsec/div)
9 Jan 2009 11:43:09
CH2
CH4
S31
S31
LOG
DEL
1 dB/
10 ns/
REF 0 dB
REF 0 s
CH1
S31
LOG
10 dB/
Overall Response
(10 dB/div)
9 Jan 2009 11:47:33
REF 0 dB
2
Avg
16
Cor
Smo
4
Cor
CENTER
440 . 000
000
MHz
SPAN
50 . 000
000
MHz
START
1 . 000
000
MHz
STOP
1 000 . 000
000
MHz
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2009, KR Electronics, Inc.
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 1
KR Electronics, Inc.
KR Electronics 2881
Specifications
Parameter
Filter type
Center Frequency
Insertion Loss
3 dB Bandwidth
Attenuation at 378 MHz
Attenuation at 505 MHz
60 dB bandwidth
Source and Load
Specification
Bandpass
440 MHz
< 3.5 dB (2.5 dB typical)
> 50 MHz (70 MHz typical)
> 60 dB
> 60 dB
120 MHz typical
50
www.krfilters.com
Physical Dimensions
Notes:
1. Surface mount package — Metal cover
2. Dimensions in inches
3. Maximum reflow temperature is 230° C for 10 sec maximum.
4. If boards are cleaned after installation, dry units completely.
Web
Email
Phone
Fax
www.krfilters.com
sales@krfilters.com
(732) 636-1900
(732) 636-1982
Page 2
KR Electronics, Inc.
91 Avenel Street
Avenel, NJ 07001
© 2009, KR Electronics, Inc.