Model BD4859N5050A00
Rev E
Ultra Low Profile 0404 Balun
50Ω to 50Ω Balanced
Description
The B4859N5050A00 is a low cost, low profile sub-miniature unbalanced to
balanced transformer designed for differential inputs and output locations on modern
chipsets in an easy to use surface mount package covering 802.11a Uni-Band II &
III and the Japanese ISM band (4.9 GHz). The B4859N5050A00 is ideal for high
volume manufacturing and delivers higher performance than traditional ceramic
baluns. The B4859N5050A00 has an unbalanced port impedance of 50Ω and a 50Ω
balanced port impedance. This transformation enables single ended signals to be
applied to differential ports on modern integrated chipsets. The output ports have
equal amplitude (-3dB) with 180 degree phase differential. The B4859N5050A00 is
available on tape and reel for pick and place high volume manufacturing.
Detailed Electrical Specifications:
Specifications subject to change without notice.
ROOM (25°C)
•
•
•
•
•
•
•
•
•
•
Features:
4800 – 5900 MHz
0.65mm Height Profile
50 Ohm to 2 x 25 Ohm
Low Insertion Loss
802.11a Uni-Band II & III
Home Cordless Compliant
Surface Mountable
Tape & Reel
Non-conductive Surface
RoHS Compliant
Parameter
Frequency
Unbalanced Port Impedance
Balanced Port Impedance
Return Loss
Insertion Loss*
Amplitude Balance
Phase Balance
CMRR
Power Handling
Operating Temperature
Min.
4800
Typ.
50
50
22
0.5
0.7
3
27
Max
5900
16
0.7
1.2
7
1
+85
-55
Unit
MHz
Ω
Ω
dB
dB
dB
Degrees
dB
Watts
ºC
* Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 ºC)
Outline Drawing
Top View (Near-side)
Side View
Bottom View (Far-side)
[
.041
+.003
-.002
1.05
+0.08
-0.06
]
[
.041
+.003
-.002
1.05
+0.08
-0.06
]
.012 [0.30]
.024
±.0025
[0.62
±0.064
] 0.12 [0.30] 1
2
3x.010
[0.25]
4
3
3x.010
[0.25]
4X .020 [0.50]
Pin Designation
GND / DC Feed
1
+ RF GND
Dimensions are in Inches [Millimeters]
Mechanical Outline
2 Unbalanced Port
3 Balanced Port
4 Balanced Port
Tolerances are Non-Cumulative
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Model BD4859N5050A00
Rev E
Typical Performance:4700 MHz. to 6000 MHz.
Return Loss - Input
0
-3
-6
-9
-12
-15
[dB]
Insertion Loss
0
-0.3
-0.6
-0.9
-1.2
-1.5
[dB]
-18
-21
-24
-27
-30
-33
-36
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
-1.8
-2.1
-2.4
-2.7
-3
-3.3
-3.6
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
Frequency [MHz]
Amplitude Balance
2
1.5
1
0.5
[dB]
Phase Balance
20
15
10
5
deg
0
-0.5
-1
-1.5
-2
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
0
-5
-10
-15
-20
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
Frequency [MHz]
CMRR
0
-3
-6
-9
-12
-15
[dB]
-18
-21
-24
-27
-30
-33
-36
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape and
Reel for Pick and Place
Manufacturing.
Model BD4859N5050A00
Rev E
Wide Band Performance: 500 MHz. to 8500 MHz.
Return Loss - Input
0
-3
-6
-9
-12
-15
[dB]
Insertion Loss
0
-0.3
-0.6
-0.9
-1.2
-1.5
[dB]
-18
-21
-24
-27
-30
-33
-36
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
-1.8
-2.1
-2.4
-2.7
-3
-3.3
-3.6
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
Frequency [MHz]
Amplitude Balance
2
1.5
1
0.5
[dB]
deg
Phase Balance
20
15
10
5
0
-5
-10
-15
-20
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
0
-0.5
-1
-1.5
-2
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
Frequency [MHz]
CMRR
0
-3
-6
-9
-12
-15
[dB]
-18
-21
-24
-27
-30
-33
-36
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
8500
Model BD4859N5050A00
Rev E
Mounting Configuration:
In order for Xinger surface mount components to work optimally, the proper impedance transmission lines must be
used to connect to the RF ports. If this condition is not satisfied, insertion loss, Isolation and VSWR may not meet
published specifications.
All of the Xinger components are constructed from ceramic filled PTFE composites which possess excellent electrical
and mechanical stability having X and Y thermal coefficient of expansion (CTE) of 17 ppm/
o
C.
An example of the PCB footprint used in the testing of these parts is shown below. An example of a DC-biased
footprint is also shown below. In specific designs, the transmission line widths need to be adjusted to the unique
dielectric coefficients and thicknesses as well as varying pick and place equipment tolerances
With No DC Bias
3X .011
[0.29]
.008 [0.21]
3X .011
[0.29]
Plated thru
hole to
ground
.014 [0.36]
With DC Bias
3X .011
[0.29]
.008 [0.21]
3X .011
[0.29]
Plated thru
hole to
ground
.014 [0.36]
.020
[0.50]
.008 [0.21]
.020
[0.50]
.008 [0.21]
3X Transmission
Line
.020
[0.50]
3X Transmission
Line
.020
[0.50]
Circuit Pattern
Footprint Pad (s)
Solder Resist
Dimensions are in Inches [Millimeters]
Mounting Footprint
Circuit Pattern
Footprint Pad (s)
Solder Resist
Dimensions are in Inches [Millimeters]
Mounting Footprint
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape and
Reel for Pick and Place
Manufacturing.
Model BD4859N5050A00
Rev E
Packaging and Ordering Information
Parts are available in reel and are packaged per EIA 481-2. Parts are oriented in tape and reel as shown below. Minimum order
quantities are 4000 per reel. See Model Numbers below for further ordering information
.
ØA
ØC
ØD
QUANTITY/REEL
4000
TABLE 1
REEL DIMENSIONS (inches [mm])
ØA
7.00 [177.8]
B
0.32 [8.0]
ØC
2.0 [50.8]
ØD
0.512 [13.0]
B
Available on Tape
and Reel for Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 411-6596
+44 2392-232392
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