3W512 Datasheet, PDF (1/2 Pages) Anaren Microwave – Balun 50Ω to 12.5Ω Balanced

Model 3W512
Rev. B
Balun
50 to 12.5 Balanced
Description
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.
Features:
• 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
Outline Drawing
ELECTRICAL SPECIFICATIONS***
Unbalanced Balanced
Frequency
Port
Port
Impedance Impedance*
GHz
Ohms
Ohms
1.8 – 2.2
50
12.5+j5.5
Return
Loss
dB Min
15
Insertion
Loss**
dB max
0.40
Amplitude
Balance
Phase
Balance
Power
Handling
ΘJC
Operating
Temp.
dB max
Degrees max
Watts
ºC / Watt
ºC
0.40
180+ 5.0
150
11.3
-55 to +85
**Specification based on performance of unit properly installed on microstrip printed circuit
boards with 50 Ω nominal impedance. Specifications subject to change without notice.
* 50Ω reference to ground
Top View (Near-side)
Side View
Bottom View (Far-side)
Pin 2
.750±.010
[19.05±0.25]
.075±.008
[1.91±0.20]
Pin 3
GND
.550±.010
[13.97±0.25]
.100±.004 [2.54±0.10]
Pin 3
.050±.008
[1.27±0.20]
.030±.004
[0.76±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]
Pin 1
Denotes
Array Number
GND Pin 1
.112±.004 [2.86±0.10]
.232±.008 [5.91±0.20]
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:
[phone]
[phone]
[phone]