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)
Features:
Parameter
Min.
Typ.
Max
Unit
MHz
Ω
• 4800 – 5900 MHz
Frequency
4800
5900
• 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
Unbalanced Port Impedance
Balanced Port Impedance
Return Loss
50
75
13
0.9
0.5
2
Ω
9
dB
Insertion Loss*
1.3
1.3
6.0
dB
Amplitude Balance
Phase Balance
CMRR
dB
Degrees
dB
• Non-conductive Surface
• RoHS Compliant
31
Power Handling
Operating Temperature
2
Watts
ºC
-55
+85
* 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)
±.002
±0.05
.027
[0.70
.020
[0.50]
±.004
]
.059
±0.10
[1.50
]
1
2
5
3
±.004
.029
[0.75
±0.10
]
.008
[0.20]
.020
[0.52]
6
4
Orientation
.010
Marker Denotes
Pin Location
[0.24]
Pin Designation
1
2
3
4
5
6
Unbalanced Port
DC Bias/GND
Balanced Port
Balanced Port
GND
Dimensions are in Inches [Millimeters]
Mechanical Outline
Tolerances are Non-Cumulative
GND
USA/Canada:
Toll Free:
(315) 432-8909
(800) 411-6596
+44 2392-232392
Available on Tape
and Reel for Pick and
Place Manufacturing.
Europe: