Coaxial
ZFBT-4R2GW+
ZFBT-4R2GW
Bias-Tee
Wideband
0.1 to 4200 MHz
Features
Maximum Ratings
Operating Temperature
-55°C to 100°C
-55°C to 100°C
30dBm max.
30V max.
• wideband, 0.1 to 4200 MHz
• low insertion loss, 0.6 dB typ.
• good isolation, 40 dB typ.
CASE STYLE: K18
Storage Temperature
RF Power
Connectors
SMA
BRACKET (OPTION “B”)
Model
ZFBT-4R2GW $79.95
$2.50
Price
Qty.
(1-9)
(1+)
Voltage at DC port
Input Current
Applications
500mA
• biasing amplifiers
• biasing of laser diodes
• biasing of active antennas
• DC return
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
DC resistance from DC to RF&DC port 4.5 ohm typ.
The +Suffix identifies RoHS Compliance. See our web site
for RoHS Compliance methodologies and qualifications.
• DC blocking
• test accessory
Coaxial Connections
Bias Tee Electrical Specifications
RF
1 (SMA female)
2 (SMA male)
3 (SMA female)
MODEL
NO.
FREQ.
(MHz)
INSERTION LOSS*
(dB)
ISOLATION*(dB)
(RF port to DC port)
(RF&DC port to DC port)
VSWR**
(:1)
RF&DC
DC
L
M
U
L
M
U
L
M
U
fL
fU
Typ. Max. Typ. Max. Typ. Max. Typ. Min. Typ. Min. Typ. Min. Typ. Max. Typ. Max. Typ. Max.
ZFBT-4R2GW(+) 0.1 4200 0.15 0.8
0.6
1.2
0.6
1.6
25
15
40
20
50
20 1.06 1.6 1.13 1.3 1.13 1.3
L= low range(fL to 10 fL)
*
M=mid range(10 fL to fU/2)
U=upper range (fU/2 to fU)
Outline Drawing
Insertion Loss 1 dB Max. and Isolation 7 dB Min. 0.1 to 0.3 MHz.
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)
ISOLATION (dB)
VSWR
(:1)
with current
(Pin=-10dBm) with current
Freq.
Pin
(MHz) (dBm)
0mA 20mA 50mA 100mA 150mA 200mA 0mA 20mA 50mA 100mA 150mA 200mA
0.10
0.27
0.53
1.06
10.00
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
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
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
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
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
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
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
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
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
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
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
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
inch
mm
Outline Dimensions (
)
A
B
C
D
E
F
G
H
ZFBT-4R2GW
INSERTION LOSS WITH CURRENT
ZFBT-4R2GW
ISOLATION WITH CURRENT
1.25
1.25
.75
.63
.38
1.00
.125 1.000
31.75 31.75 19.05 16.00
9.65 25.40
3.18 25.40
2.0
1.6
1.2
0.8
0.4
0.0
60
0mA
100mA
200mA
50
40
30
20
10
J
--
--
K
--
--
L
M
N
P
Q
wt
.07 grams
1.78 70.0
.125 1.688
2.18
.75
3.18 42.88 55.37 19.05
0mA
1000
100mA
2000 3000
200mA
4000
0
5000
6000
0
1000
2000
3000
4000
5000
6000
FREQUENCY (MHz)
FREQUENCY (MHz)
ZFBT-4R2GW
VSWR
1.20
1.16
1.12
1.08
1.04
1.00
electrical schematic
0
1000
2000
3000
4000
5000
6000
FREQUENCY (MHz)
®
INTERNET http://www.minicircuits.com
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661
REV. A
M98898
ZFBT-4R2GW
DJ/RS/CP
060211
Mini-Circuits
Distribution Centers NORTH AMERICA 800-654-7949 • 417-335-5935 • Fax 417-335-5945 •EUROPE 44-1252-832600 • Fax 44-1252-837010
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