Coaxial
50
Ω
Bias-Tee
Wideband
0.1 to 4200 MHz
Features
-55°C to 100°C
-55°C to 100°C
30 dBm max.
30 V max.
500 mA
4.5 ohm typ.
ZFBT-4R2GW+
ZFBT-4R2GW
Maximum Ratings
Operating Temperature
Storage Temperature
RF Power
Voltage at DC port
Input Current
DC resistance from DC to RF&DC port
• wideband, 0.1 to 4200 MHz
• low insertion loss, 0.6 dB typ.
• good isolation, 40 dB typ.
Applications
CASE STYLE: K18
Connectors Model
Price
SMA
ZFBT-4R2GW(+)
$79.95
BRACKET (OPTION “B”)
$2.50
Qty.
(1-9)
(1+)
Coaxial Connections
RF
RF&DC
DC
1 (SMA female)
2 (SMA male)
3 (SMA female)
• biasing amplifiers
• biasing of laser diodes
• biasing of active antennas
• DC return
• DC blocking
• test accessory
+ 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.
Bias-Tee Electrical Specifications
FREQUENCY
(MHz)
INSERTION LOSS*
(dB)
L
f
L
0.1
f
U
4200
Typ. Max.
0.15 0.8
M
Typ. Max.
0.6
1.2
U
Typ. Max.
0.6
1.6
ISOLATION* (dB)
(RF port to DC port)
(RF&DC port to DC port)
L
Typ. Min.
25
15
M
Typ. Min.
40
20
U
Typ. Min.
50
20
L
Typ. Max.
1.06 1.6
VSWR**
(:1)
M
Typ. Max.
1.13 1.3
U
Typ. Max.
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 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
Freq.
(MHz)
Pin
(dBm)
0mA
0.10
0.27
0.53
1.06
10.00
114.75
324.25
743.25
952.75
1581.25
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
INSERTION LOSS (dB)
with Current
20mA
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
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 150mA 200mA
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
10mA
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
ISOLATION (dB)
(Pin= -10dBm) with current
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 150mA 200mA
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
VSWR
(:1)
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
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
.125
3.18
H
1.000
25.40
Q
wt
.07 grams
1.78
70.0
2000.25
2524.00
3047.75
3676.25
4200.00
4502.50
4802.00
5251.75
5550.75
6000.00
Electrical Schematic
Mini-Circuits
ISO 9001 ISO 14001
CERTIFIED
RF/IF MICROWAVE COMPONENTS
®
minicircuits.com
REV. A
M98898
ZFBT-4R2GW
DJ/RS/CP/AM
070607
Page 1 of 2
EW
ALL N
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site
The Design Engineers Search Engine
Provides ACTUAL Data Instantly From MINI-CIRCUITS At:
www.minicircuits.com
Performance Charts
2.0
INSERTION LOSS (dB)
1.6
1.2
0.8
0.4
0.0
0
1000
2000
3000
4000
FREQUENCY (MHz)
ZFBT-4R2GW
VSWR
5000
6000
ZFBT-4R2GW
INSERTION LOSS WITH CURRENT
0mA
100mA
200mA
ZFBT-4R2GW+
ZFBT-4R2GW
60
50
40
30
20
10
0
1000
2000
3000
4000
FREQUENCY (MHz)
5000
6000
10mA
100mA
200mA
ZFBT-4R2GW
ISOLATION WITH CURRENT
1.20
1.16
VSWR
1.12
1.08
1.04
1.00
0
1000
2000
3000
4000
FREQUENCY (MHz)
5000
6000
Mini-Circuits
ISO 9001 ISO 14001
CERTIFIED
RF/IF MICROWAVE COMPONENTS
ISOLATION (dB)
®
minicircuits.com
EW
ALL N
P.O. Box 350166, Brooklyn, New York 11235-0003 (718) 934-4500 Fax (718) 332-4661 For detailed performance specs & shopping online see Mini-Circuits web site
The Design Engineers Search Engine
Provides ACTUAL Data Instantly From MINI-CIRCUITS At:
www.minicircuits.com
Page 2 of 2
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