3W525S Datasheet, PDF (1/2 Pages) Anaren Microwave – Balun Transformers 50 to 25 Balanced

Model 3W525S
Rev. A
Balun Transformers
50 to 25 Balanced
Features:
• 1.8 – 2.5 GHz
• 180° Transformer
• 50 Ohm to 2 x 25 Ohm
• Low Insertion Loss
• High Power
• Even Order Suppression
• Input to Output DC Isolation
• Surface Mountable
• Tape & Reel
• Convenient Package
• Lead Free
Outline Drawing
Description
The 3W525S is a low profile balanced to unbalanced transformer designed for push-
pull amplifiers in an easy to use surface mount package for PCS and DCS
applications. These compact Xinger® surface mount baluns are ideal for high
volume manufacturing and are more reliable and repeatable than traditional baluns.
The 3W525S has an unbalanced port impedance of 50 and balanced port
impedances of 25 to ground with a 50 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 3W525S is available on tape and reel for pick and place high volume
manufacturing.
ELECTRICAL SPECIFICATIONS***
Frequency
Unbalanced
Port
Impedance
Balanced
Port
Impedance*
Return
Loss
Insertion
Loss**
GHz
Ohms
Ohms
dB min
dB max
1.8 – 2.5
50
25
15
0.38
1.805-2.170
50
25
15
0.35
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
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.
**Insertion Loss excludes reflected power. * 25Ω reference to ground
Top View (Near-side)
Side View
Bottom View (Far-side)
.480±.010
[12.19±0.25]
Pin 2
.076±.008
[1.93±0.20]
Pin 2
.027±.004 [0.69±0.10]
.062±.008
[1.56±0.20]
Pin 1
Pin 1
GND
.650±.010
[16.51±0.25]
.027±.004
[0.69±0.10]
GND
.130±.008 [3.30±0.20]
.121±.004 [3.07±0.10]
.339±.008 [8.62±0.20]
Denotes
Array Number
Pin 3
Dimensions are in Inches [Millimeters]
3W525S Mechanical Outline
Pin 3
.035±.004 TYP
[0.89±0.10]
.038±.008 [0.98±0.20]
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe:
[phone]
[phone]
[phone]