KR Electronics, Inc.
KR Electronics
General Description
KR 2757-1 is a 70 MHz bandpass filter. The filter has a mini-
mum 1 dB bandwidth of 40 MHz. Other passband frequencies
are available. Please consult the factory.
www.krfilters.com
Features
Sharp Transition to Stopband
>50 dB Stopband
50
Source and Load
Surface Mount
Typical Performance
Passband Amplitude & Group Delay
(1 dB/div and 10 nsec/div)
14 Mar 2009 15:20:43
CH1
CH3
S21
S21
LOG
DEL
1 dB/
10 ns/
REF -.5 dB
REF 0 s
CH2
S21
LOG
10 dB/
Overall Response
(10 dB/div)
14 Mar 2009 15:21:52
REF 0 dB
Cor
Cor
PRm
START
1 . 000
000
MHz
STOP
1 000 . 000
000
MHz
CENTER
70 . 000
000
MHz
SPAN
40 . 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 2757-1
Specifications
Parameter
Filter type
Center Frequency
Insertion Loss
1 dB Bandwidth
Attenuation at 30 MHz
Attenuation at 110 MHz
Source and Load
Specification
Bandpass
70 MHz
< 1.5 dB (1 dB typical)
40 MHz min
> 50 dB
> 50 dB
50
www.krfilters.com
Physical Dimensions
Notes:
1. Dimensions in inches
2. Also available with SMA connectors
3. Maximum reflow temperature 209° C for 10 seconds max
4. If boards are washed, units must be dried completely
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 2