Coaxial
Bias-Tee
Wideband
Maximum Ratings
Operating Temperature
Storage Temperature
RF Power
Voltage at DC port
Input Current
-55°C to 100°C
-55°C to 100°C
30dBm max.
30V max.
500mA
ZFBT-4R2G+
ZFBT-4R2G
Features
• wideband, 10 to 4200 MHz
• low insertion loss, 0.6 dB typ.
• good isolation, 40 dB typ.
CASE STYLE: K18
Connectors
Model
SMA
ZFBT-4R2G
BRACKET (OPTION “B”)
Price
$59.95
$2.50
Qty.
(1-9)
(1+)
10 to 4200 MHz
Applications
•
•
•
•
•
•
biasing amplifiers
biasing of laser diodes
biasing of active antennas
DC return
DC blocking
test accessory
MODEL
NO.
FREQ.
(MHz)
INSERTION LOSS*
(dB)
DC resistance from DC to RF&DC port 4.5 ohm typ.
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications.
PORT
RF
Coaxial Connections
gf
2 (SMA male)
Bias Tee Electrical Specifications
ISOLATION*(dB)
(RF port to DC port)
(RF&DC port to DC port)
M
Typ.
40
Min.
20
Typ.
50
U
1 (SMA female)
3 (SMA female)
RF&DC
DC
VSWR**
(:1)
f
L
ZFBT-4R2G
(+)
10
f
U
4200
L
M
U
L
Typ. Max. Typ. Max. Typ. Max. Typ. Min.
0.15
0.6
0.6
1.2
0.6
1.6
32
20
L
M
U
Min. Typ. Max. Typ. Max. Typ. Max.
20
1.06
1.2
1.13
1.3
1.13
1.3
Outline Drawing
L= low range(f
L
to 10 f
L
)
M=mid range(10 f
L
to f
U
/2)
U=upper range (f
U
/2 to f
U
)
* Insertion Loss and Isolation are guaranteed up to 20 dBm-RF power and 200mA DC current.
** VSWR measured with open and short at DC port.
Typical Performance Data
INSERTION LOSS (dB)
with current
Freq.
Pin
(MHz) (dBm) 0mA 20mA
0.10
0.27
0.53
1.06
10.00
114.75
324.25
743.25
952.75
1581.25
2000.25
2524.00
3047.75
3676.25
4200.00
4502.50
4802.00
5251.75
5550.75
6000.00
19.80
19.80
19.80
19.80
18.50
19.50
19.70
18.70
18.20
18.00
17.10
14.40
14.20
15.10
17.90
-0.60
-0.70
-1.10
-2.00
-2.40
0.17
0.13
0.12
0.13
0.16
0.22
0.50
0.28
0.31
0.46
0.46
0.40
0.45
0.73
1.04
1.17
1.26
1.19
1.65
1.70
0.17
0.13
0.12
0.13
0.17
0.25
0.55
0.31
0.33
0.48
0.48
0.42
0.48
0.74
1.07
1.19
1.26
1.17
1.63
1.71
ISOLATION (dB)
(Pin=-10dBm) with current
200mA
0.24
0.15
0.11
0.12
0.16
0.22
0.56
0.29
0.33
0.49
0.47
0.44
0.49
0.75
1.06
1.16
1.20
1.09
1.51
1.50
VSWR
(:1)
200mA
11.75
18.16
23.37
27.92
30.56
33.59
43.34
52.47
40.95
44.17
45.28
53.67
50.99
45.65
27.92
27.87
37.51
48.19
38.19
34.48
1.16
1.07
1.04
1.02
1.04
1.07
1.06
1.06
1.11
1.13
1.12
1.12
1.09
1.07
1.09
1.14
1.12
1.11
1.10
1.12
50mA
0.16
0.13
0.12
0.12
0.17
0.24
0.53
0.30
0.33
0.47
0.47
0.41
0.47
0.75
1.07
1.18
1.27
1.16
1.60
1.65
100mA
0.17
0.14
0.11
0.11
0.16
0.22
0.52
0.29
0.31
0.46
0.46
0.42
0.46
0.75
1.06
1.19
1.25
1.13
1.56
1.59
150mA
0.20
0.14
0.11
0.12
0.16
0.22
0.53
0.29
0.32
0.48
0.46
0.43
0.46
0.75
1.05
1.17
1.22
1.11
1.54
1.54
0mA
19.46
25.86
29.17
30.81
30.06
34.45
44.65
51.19
40.75
42.58
45.46
53.15
52.46
46.32
28.42
28.15
37.95
49.68
38.44
34.37
20mA
19.04
25.53
28.98
30.74
30.07
34.49
44.61
50.50
40.80
42.59
45.57
53.72
52.25
47.19
28.36
28.10
38.01
51.04
38.56
34.36
50mA
17.83
24.52
28.36
30.56
30.07
34.27
44.25
50.16
40.97
43.94
45.73
52.19
51.55
46.36
28.24
28.05
38.19
49.12
38.36
34.23
100mA
14.58
21.43
26.18
29.62
30.20
33.99
43.90
50.65
40.97
43.77
45.48
53.17
51.33
45.53
28.14
27.96
37.93
49.37
38.07
34.40
150mA
12.66
19.31
24.40
28.62
30.38
33.83
43.91
51.69
40.93
44.36
46.14
52.67
51.46
46.19
28.01
27.84
37.58
49.13
37.85
34.49
Outline Dimensions (
inch
)
mm
A
1.25
31.75
J
--
--
B
1.25
31.75
K
--
--
C
.75
19.05
L
.125
3.18
D
.63
16.00
M
1.688
42.88
E
.38
9.65
N
2.18
55.37
F
1.00
25.40
P
.75
19.05
G
H
INSERTION LOSS (dB)
2.0
ZFBT-4R2G
INSERTION LOSS WITH CURRENT
60
0mA
1.6
1.2
0.8
0.4
0.0
0
1000
2000
3000
4000
FREQUENCY (MHz)
5000
6000
ZFBT-4R2G
ISOLATION WITH CURRENT
.125 1.000
3.18 25.40
Q
1.78
wt
70.0
100mA
200mA
ISOLATION (dB)
50
40
30
20
0mA
10
0
1000
2000
3000
4000
5000
6000
FREQUENCY (MHz)
100mA
200mA
.07 grams
ZFBT-4R2G
VSWR
1.20
1.16
electrical schematic
VSWR
1.12
1.08
1.04
1.00
0
1000
2000
3000
4000
5000
6000
FREQUENCY (MHz)
Mini-Circuits
®
INTERNET
http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
Distribution Centers
NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 • EUROPE 44-1252-832600 • Fax 44-1252-837010
Mini-Circuits
ISO 9001 & ISO 14001
Certified
REV. A
M98898
ZFBT-4R2G
DJ/RS/CP
060211
Microcontroller MCU
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