Surface Mount Circulator
FR31-Series
M/A-COM Division of AMP Incorporated n North America: Tel. (800) 366-2266, Fax (800) 618-8883 n Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Features
24 dB Isolation Typical, 0.25 dB Insertion Loss Typical
Compatible with Pick-and-Place Manufacturing and Solder
Reflow Profiles
Custom Products Available with Alternate Configurations
such as Couplers, Attenuators, Higher Power Terminations,
Reverse Circulation and Termination on Ports 1 or 2
Available as Custom Product Without Flange for Surface
Mount Applications (Solder Reflow)
Designed for Wireless Telecommunications Systems:
AMPS, N-AMPS, D-AMPS, EGSM, GSM, DCS1800,
PCS1900
Description
M/A-COM's surface mount circulators and isolators, designed for
cellular applications, feature high performance at low cost. These
designs offer the best isolation per insertion loss ratio in the
industry and are currently produced in the tens of thousands of
pieces per year. These units can be ordered so as to be compatible
with solder reflow manufacturing techniques. Both circulators and
isolators are in stock at all authorized M/A-COM distributors.
FR31
Part Number
Frequency Range (MHz)
FR31-0001
FR31-0002
FR31-0003
FR31-0004
FR31-0005
FR31-0006
FR31-0007
FR31-0008
869 894
925 960
1805 1880
1930 1990
824 849
880 915
1710 1785
1850 1910
Electrical Specifications
-10 to +60 C
-30 to +85 C
Parameter
Units
Min.
Typ.
Max.
Min.
Typ.
Max.
Isolation
dB
22
24
--
20
22
--
Insertion Loss
dB
--
0.25
0.3
--
0.30
0.35
Forward Power
Watts
--
--
65
--
--
65
VSWR
--
--
--
1.20
--
--
1.22
Surface Mount Circulator
FR31-Series
Surface Mount Circulator
FR31-Series
M/A-COM Division of AMP Incorporated n North America: Tel. (800) 366-2266, Fax (800) 618-8883 n Asia/Pacific: Tel.+85 2 2111 8088, Fax +85 2 2111 8087
n Europe: Tel. +44 (1344) 869 595, Fax+44 (1344) 300 020
www.macom.com
AMP and Connecting at a Higher Level are trademarks.
Specifications subject to change without notice.
V2.00
Typical Performance, T = +25C
FR31-0001
Isolation
Insertion Loss
-45
-40
-35
-30
-25
-20
-15
-10
-5
0
81
9
85
2
88
4
91
7
Frequency (MHz)
I
s
ola
t
i
o
n (
d
B
)
-0.6
-0.5
-0.4
-0.3
-0.2
-0.1
0
81
9
85
2
88
4
91
7
Frequency (MHz)
In
s
e
rt
i
o
n
L
o
s
s
(d
B
)
FR31-0002
Isolation
FR31-0003
Insertion Loss
FR31-0004
Isolation
Insertion Loss
Insertion Loss
Isolation
-0 .6
-0 .5
-0 .4
-0 .3
-0 .2
-0 .1
0
8 7 5
9 0 8
9 4 0
9 7 3
1 0 0 5
F r e q u e n c y ( M H z )
In
sert
i
o
n
L
o
ss (
d
B)
- 0 . 3 5
- 0 . 3
- 0 . 2 5
- 0 . 2
- 0 . 1 5
- 0 . 1
- 0 . 0 5
0
1 7 5 0
1 7 9 5
1 8 4 0
1 8 8 5
1 9 3 0
F r e q u e n c y ( M H z )
I
n
sert
i
o
n
L
o
ss (
d
B)
- 5 0
- 4 5
- 4 0
- 3 5
- 3 0
- 2 5
- 2 0
- 1 5
- 1 0
- 5
0
1 7 5 0
1 7 9 5
1 8 4 0
1 8 8 5
1 9 3 0
F r e q u e n c y ( M H z )
Is
ola
t
ion (dB
)
-5 0
-4 5
-4 0
-3 5
-3 0
-2 5
-2 0
-1 5
-1 0
-5
0
1 8 8 0
1 9 1 2
1 9 4 3
1 9 7 5
2 0 0 6
F r e q u e n c y ( M H z )
I
s
ol
a
t
i
on (dB)
- 0 .3 5
- 0 .3
- 0 .2 5
- 0 .2
- 0 .1 5
- 0 .1
- 0 .0 5
0
1 8 8 0
1 9 1 2
1 9 4 3
1 9 7 5
2 0 0 6
F r e q u e n c y ( M H z )
I
n
sert
i
o
n
L
o
ss (
d
B)
-4 5
-4 0
-3 5
-3 0
-2 5
-2 0
-1 5
-1 0
-5
0
8 7 5
9 0 8
9 4 0
9 7 3
1 0 0 5
F r e q u e n c y (M H z )
I
s
ol
a
t
i
on (dB
)
PDF 
ZIP