Coaxial
ZFBT-4R2G+
Bias-Tee
50Ω Wideband 10 to 4200 MHz
Maximum Ratings
Operating Temperature
Storage Temperature
RF Power
Features
• wideband, 10 to 4200 MHz
• low insertion loss, 0.6 dB typ.
• good isolation, 40 dB typ.
CASE STYLE: K18
-55°C to 100°C
-55°C to 100°C
30 dBm max.
30 V max.
Connectors Model
SMA ZFBT-4R2G+
BRACKET (OPTION “B”)
Price
$59.95
$2.50
Qty.
(1-9)
(1+)
Voltage at DC port
Applications
• biasing amplifiers
• biasing of laser diodes
• biasing of active antennas
• DC return
+ RoHS compliant in accordance
with EU Directive (2002/95/EC)
The +Suffix has been added in order to identify RoHS
Compliance. See our web site for RoHS Compliance
methodologies and qualifications.
Input Current
500 mA
DC resistance from DC to RF&DC port
4.5 ohm typ.
Coaxial Connections
RF
• DC blocking
• test accessory
1 (SMA female)
2 (SMA male)
3 (SMA female)
RF&DC
DC
Bias-Tee Electrical Specifications
FREQUENCY
(MHz)
INSERTION LOSS*
ISOLATION* (dB)
(RF port to DC port)
(RF&DC port to DC port)
VSWR**
(:1)
(dB)
L
M
U
L
M
U
L
M
U
Outline Drawing
fL
fU
Typ. Max. Typ. Max. Typ. Max. Typ. Min.
0.15 0.6 0.6 1.2 0.6 1.6 32 20
M= mid range (10 fL to fU/2)
Typ. Min.
40 20
Typ. Min.
50 20
Typ. Max. Typ. Max. Typ. Max.
10
4200
1.06 1.2
1.13 1.3
1.13 1.3
L= low range (fL to 10 fL)
U= upper range (fU/2 to fU)
* 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) (dBm)
Pin
INSERTION LOSS (dB)
with Current
ISOLATION (dB)
(Pin= -10dBm) with current
VSWR
(:1)
0mA
20mA 50mA 100mA 150mA 200mA 10mA 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
0.17
0.13
0.12
0.13
0.16
0.17
0.13
0.12
0.13
0.17
0.16
0.13
0.12
0.12
0.17
0.17
0.14
0.11
0.11
0.16
0.20
0.14
0.11
0.12
0.16
0.24
0.15
0.11
0.12
0.16
19.46
25.86
29.17
30.81
30.06
19.04
25.53
28.98
30.74
30.07
17.83
24.52
28.36
30.56
30.07
14.58
21.43
26.18
29.62
30.20
12.66
19.31
24.40
28.62
30.38
11.75
18.16
23.37
27.92
30.56
1.16
1.07
1.04
1.02
1.04
114.75
324.25
743.25
952.75
1581.25
19.50
19.70
18.70
18.20
18.00
0.22
0.50
0.28
0.31
0.46
0.25
0.55
0.31
0.33
0.48
0.24
0.53
0.30
0.33
0.47
0.22
0.52
0.29
0.31
0.46
0.22
0.53
0.29
0.32
0.48
0.22
0.56
0.29
0.33
0.49
34.45
44.65
51.19
40.75
42.58
34.49
44.61
50.50
40.80
42.59
34.27
44.25
50.16
40.97
43.94
33.99
43.90
50.65
40.97
43.77
33.83
43.91
51.69
40.93
44.36
33.59
43.34
52.47
40.95
44.17
1.07
1.06
1.06
1.11
1.13
Outline Dimensions ( inch
)
mm
2000.25
2524.00
3047.75
3676.25
4200.00
17.10
14.40
14.20
15.10
17.90
0.46
0.40
0.45
0.73
1.04
0.48
0.42
0.48
0.74
1.07
0.47
0.41
0.47
0.75
1.07
0.46
0.42
0.46
0.75
1.06
0.46
0.43
0.46
0.75
1.05
0.47
0.44
0.49
0.75
1.06
45.46
53.15
52.46
46.32
28.42
45.57
53.72
52.25
47.19
28.36
45.73
52.19
51.55
46.36
28.24
45.48
53.17
51.33
45.53
28.14
46.14
52.67
51.46
46.19
28.01
45.28
53.67
50.99
45.65
27.92
1.12
1.12
1.09
1.07
1.09
A
1.25
B
1.25
C
.75
D
.63
E
.38
F
1.00
G
H
.125 1.000
3.18 25.40
31.75 31.75 19.05 16.00
9.65 25.40
J
--
--
K
--
--
L
M
N
2.18
P
.75
Q
wt
.07 grams
1.78 70.0
4502.50
4802.00
5251.75
5550.75
6000.00
-0.60
-0.70
-1.10
-2.00
-2.40
1.17
1.26
1.19
1.65
1.70
1.19
1.26
1.17
1.63
1.71
1.18
1.27
1.16
1.60
1.65
1.19
1.25
1.13
1.56
1.59
1.17
1.22
1.11
1.54
1.54
1.16
1.20
1.09
1.51
1.50
28.15
37.95
49.68
38.44
34.37
28.10
38.01
51.04
38.56
34.36
28.05
38.19
49.12
38.36
34.23
27.96
37.93
49.37
38.07
34.40
27.84
37.58
49.13
37.85
34.49
27.87
37.51
48.19
38.19
34.48
1.14
1.12
1.11
1.10
1.12
.125 1.688
3.18 42.88 55.37 19.05
Electrical Schematic
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M108294
ZFBT-4R2G+
DJ/RS/CP
080220
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
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