Model 3A525
Rev. A
Balun Transformers
50鈩?to 25鈩?Balanced
Description
The 3A525 is a low profile balanced to unbalanced transformer in an easy
to use surface mount package covering Japanese PDC, DCS and PCS
receive push-pull amplifier and mixer applications. The 3A525 has an
unbalanced impedance of 50鈩?and a balanced port impedances of 25鈩?to
ground with 50鈩?balance between outputs. This eases the matching of the
push-pull amplifier鈥檚 power transistors which have low impedance levels.
The output ports have equal amplitude (-3 dB) with 180擄 phase differential.
The 3A525 is available on tape and reel for pick and place high volume
manufacturing.
ELECTRICAL SPECIFICATIONS***
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Features:
1.5 鈥?1.9 GHz
180擄 Transformer
50 Ohm to 2 x 25 Ohm
Low Insertion Loss
High Power
Input to Output DC Isolation
Surface Mountable
Tape & Reel
Convenient Package
Frequency
GHz
Unbalanced
Port
Impedance
Ohms
Balanced
Port
Impedance*
Ohms
Return
Loss
dB min
Insertion
Loss**
dB max
1.5 鈥?1.9
Amplitude
Balance
dB max
50
Phase
Balance
Degrees max
25
Power
Handling
Watts
15
螛JC
潞C / Watt
0.35
Operating
Temp.
潞C
0.40
180鹵 5.0
150
7.2
-55 to +85
***Specification based on performance of unit properly installed on microstrip printed circuit
boards with 50
鈩?/div>
nominal impedance. Specifications subject to change without notice.
**Insertion Loss excludes reflected power. * 25
鈩?/div>
reference to ground
Outline Drawing
Top View (Near-side)
.480
鹵.010
[12.19
鹵0.25
]
Side View
.076
鹵.008
[1.93
鹵0.20
]
Pin 2
Bottom View (Far-side)
.027
鹵.004
[0.69
鹵0.10
]
.062
鹵.008
[1.56
鹵0.20
]
Pin 1
.650
鹵.010
[16.51
鹵0.25
]
.027
鹵.004
[0.69
鹵0.10
]
GND
.130
鹵.008
[3.30
鹵0.20
]
Pin 3
Pin 3
.035
鹵.004
TYP
[0.89
鹵0.10
]
.038
鹵.008
[0.98
鹵0.20
]
Dimensions are in Inches [Millimeters]
3A525 Rev A Mechanical Outline
Pin 2
Pin 1
GND
Denotes
Array Number
.121
鹵.004
[3.07
鹵0.10
]
.339
鹵.008
[8.62
鹵0.20
]
Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 544-2414
+44 2392-232392
3A525 產(chǎn)品屬性
0現(xiàn)貨
停產(chǎn)
Xinger?
卷帶（TR）
停產(chǎn)
1.5GHz ~ 1.9GHz
50 / 50 歐姆
180° ±5°
0.35dB
15dB
3-SMD，無引線
表面貼裝型
1
2
