Model 3W512
Rev. B
50
Description
to 12.5
Balun
Balanced
The 3W512 is a low profile balanced to unbalanced transformer designed for push-
pull amplifiers in an easy to use surface mount package for PCS, DCS, and UMTS.
These compact Xinger
®
surface mount baluns are ideal for high volume
manufacturing and are more reliable and repeatable than traditional baluns. The
3W512 has an unbalanced port impedance of 50Ω and balanced port impedances of
12.5Ω to ground with a 25Ω balance between outputs. This eases the matching of
the push-pull amplifier’s power transistors, which have low impedance levels. The
output ports have equal amplitude (-3dB) with 180 degree phase differential. The
Xinger
®
balun is a result of years of research and development culminating with a
solution so unique, a patent is pending on the design approach. The 3W512 is
available on tape and reel for pick and place high volume manufacturing.
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Features:
ELECTRICAL SPECIFICATIONS***
Frequency
GHz
1.8 – 2.2 GHz
180
°
Transformer
50 Ohm to 12.5+j5.5 Ohm
Broad Band
Low Insertion Loss
High Power
Even Order Suppression
Input to Output DC Isolation
Surface Mountable
Tape & Reel
•
Convenient Package
Unbalanced
Port
Impedance
Ohms
Balanced
Port
Impedance*
Ohms
Return
Loss
dB Min
Insertion
Loss**
dB max
1.8 – 2.2
Amplitude
Balance
dB max
50
Phase
Balance
Degrees max
12.5+j5.5
Power
Handling
Watts
15
Θ
JC
ºC / Watt
0.40
Operating
Temp.
ºC
0.40
180+ 5.0
150
11.3
-55 to +85
Outline Drawing
Top View (Near-side)
**Specification based on performance of unit properly installed on microstrip printed circuit
boards with 50
Ω
nominal impedance. Specifications subject to change without notice.
* 50
Ω
reference to ground
Side View
.075
±.008
[1.91
±0.20
]
Pin 3
.050
±.008
[1.27
±0.20
]
.030
±.004
[0.76
±0.10
]
GND
.100
±.004
Bottom View (Far-side)
[2.54
±0.10
]
.290
±.004
[7.37
±0.10
]
.035
±.008
[0.89
±0.20
]
Pin 2
.030
±.004
TYP
[0.76
±0.10
]
.050
±.008
[1.27
±0.20
]
.232
±.008
[5.91
±0.20
]
Pin 2
.750
±.010
[19.05
±0.25
]
Pin 3
.550
±.010
[13.97
±0.25
]
GND
Pin 1
Denotes
Array Number
Pin 1
.112
±.004
[2.86
±0.10
]
Dimensions are in Inches [Millimeters]
3W512 Rev A Mechanical Outline
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
ANAREN [ ANAREN MICROWAVE ]
