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 BD4859L5075A00
Rev C
Ultra Small Low Profile 0603 Balun
50Ω to 75Ω Balanced
Description
The BD4859L5075A00 is an ultra-small low profile balanced to unbalanced
transformer designed for differential inputs and output locations on next generation
wireless chipsets in an easy to use surface mount package covering 802.11a Uni-
Band II and Uni-Band III and the Japanese ISM band (4.9GHz). The
BD4859L5075A00 is ideal for high volume manufacturing and is higher performance
than traditional ceramic baluns. The BD4859L5075A00 has an unbalanced port
impedance of 50Ω and a 75Ω 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 BD4859L5075A00 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)
Parameter Min. Typ. Max Unit
Frequency 4800 5900 MHz
Unbalanced Port Impedance 50 Ω
Balanced Port Impedance 75 Ω
Return Loss 9 13 dB
Insertion Loss* 0.9 1.3 dB
Amplitude Balance 0.5 1.3 dB
Phase Balance 2 6.0 Degrees
CMRR 31 dB
Power Handling 2 Watts
Features:
• 4800 – 5900 MHz
• 0.7mm Height Profile
• 50 Ohm to 2 x 37 Ohm
• Covers 802.11a Uni-Band II & III
• Low Insertion Loss
• Input to Output DC Isolation
• Surface Mountable
• Tape & Reel
• Non-conductive Surface
• RoHS Compliant
Operating Temperature -55 +85 ºC
* Insertion Loss stated at room temperature (Insertion Loss is approximately 0.1 dB higher at +85 ºC)
Outline Drawing
Mechanical Outline
Dimensions are in Inches [Millimeters]
Tolerances are Non-Cumulative
Bottom View (Far-side)Side ViewTop View (Near-side)
Pin
3
6
1
2
4
5
Designation
Unbalanced Port
DC Bias/GND
Balanced Port
Orientation
Marker Denotes
Pin Location
.027±.002
[0.70±0.05]
.059±.004
[1.50±0.10].029±.004
[0.75±0.10]
Balanced Port
GND
GND
.008
[0.20]
.010
[0.24]
4
56
.020
[0.52]
3
.020
[0.50]
21
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 BD4859L5075A00
Rev C
Typical Broadband Performance: 500 MHz. to 8000 MHz.
Return Loss - Input
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
[dB]
Amplitude Balance
-2
-1.5
-1
-0.5
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]
[dB]
Insertion Loss
-30
-25
-20
-15
-10
-5
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
[dB]
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
8500
Frequency [MHz]
deg
CMRR
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
6500
7000
7500
8000
8500
Frequency [MHz]
[dB]
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 BD4859L5075A00
Rev C
Typical Performance: 4700 MHz. to 6000 MHz.
Return Loss - Input
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Fr e quency [M Hz]
[dB]
Amplitude Balance
-2
-1.5
-1
-0.5
0
0.5
1
1.5
2
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
[dB]
Insertion Loss
-3.6
-3.3
-3
-2.7
-2.4
-2.1
-1.8
-1.5
-1.2
-0.9
-0.6
-0.3
0
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
[dB]
Phase Balance
-20
-15
-10
-5
0
5
10
15
20
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
deg
CMRR
-36
-33
-30
-27
-24
-21
-18
-15
-12
-9
-6
-3
0
4700
4800
4900
5000
5100
5200
5300
5400
5500
5600
5700
5800
5900
6000
Frequency [MHz]
[dB]
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 BD4859L5075A00
Rev C
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/oC.
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.
No Bias Footprint
.012
[0.31]
2X .006
[0.16]
6X .013
[0.34]
6X .011
[0.29]
6X .002
[0.05]
3X Transmission
Line
Plated thru
holes to
ground
Part Orientation (Top View)
0603 Standaard Mounting Footprint
Dimensions are in Inches [Millimeters]
Circuit Pattern
Footprint Pad (s)
Solder Resist
DC Bias Footprint
0603 DC Bias Mounting Footprint
Dimensions are in Inches [Millimeters]
Circuit Pattern
Footprint Pad (s)
Solder Resist
.012
[0.31]
6X .011
[0.29]
6X .002
[0.05]
3X Transmission
Line
Plated thru
holes to
ground
Part Orientation (Top View)
DC Bias
6X .013
[0.34]
2X .006
[0.16]
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 BD4859L5075A00
Rev C
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.
B
ØA ØC
REEL DIMENSIONS (inches [mm])
ØA
B
ØC
0.32 [8.0]
2.0 [50.8]
7.00 [177.8]
4000
QUANTITY/REEL
TABLE 1
ØD
0.512 [13.0]
ØD
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 BD4859L5075A00
Rev C
