Available on Tape
and Reel For Pick and
Place Manufacturing.
USA/Canada:
Toll Free:
Europe
:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Model X2A
Rev. A
SMT Crossover
Description
The X2A is a low profile crossover to intersect an RF and DC circuit trace in
an easy to use surface mount package designed for frequencies up to 6
GHz. The X2A is ideal for any application where an RF circuit must intersect
with a DC circuit without resorting to a multilayer PCB. Parts have been
subjected to rigorous qualification testing and units are 100% tested. They
are manufactured using materials with x and y thermal expansion
coefficients compatible with common substrates such as FR4, G-10 and
polyamide.
ELECTRICAL
SPECIFICATIONS**
Frequency
Port Impedance
Return Loss
GHz
Ohms
dB Min
DC 2.5
50
20
2.5 4.0
50
20
4.0 6.0
50
15
Insertion Loss
Power
JC
Operating
Temp.
dB Max
Watts
C / Watt
C
0.05
30
250.9
-55 to +85
0.10
15
250.9
-55 to +85
Features:
DC 6.0 GHz
RF DC Crossover
Low Loss
DC Isolation
Surface Mountable
Tape And Reel
Convenient Package
100 % Tested
0.15
10
250.9
-55 to +85
**Specification based on performance of unit properly installed on microstrip printed circuit boards
with 50
nominal impedance. Specifications subject to change without notice.
Outline Drawing
X2A Rev A Mechanical Outline
Dimensions are in Inches [Millimeters]
Side View
Bottom View (Far-side)
Top View (Near-side)
.200
.010
[5.08
0.25
]
.200
.010
[5.08
0.25
]
.049
.005
[1.24
0.13
]
4X .033
.008
SQ
[0.83
0.20
]
2X .056
.004
[1.42
0.10
]
4X .039
.004
[1.00
0.10
]
GND
GND
Pin 1a
Pin 1b
GND
GND
GND
GND
Pin 1a
Pin 1b
2X .102
.004
[2.59
0.10
]
USA/Canada:
Toll Free:
Europe:
(315) 432-8909
(800) 544-2414
+44 2392-232392
Available on Tape and
Reel For Pick and Place
Manufacturing.
Model X2A
Rev. A
Typical Performance: 0.5 GHz. to 6.0 GHz.
Return Loss X2A
-60
-50
-40
-30
-20
-10
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Frequency (MHz)
R
e
tu
r
n
L
o
s
s
(
d
B
)
Insertion Loss X2A
-0.50
-0.40
-0.30
-0.20
-0.10
0.00
500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Frequency (MHz)
I
n
ser
t
i
o
n Loss
(
d
B
)
Mounting Mounting
Footprint
In order for Xinger crossovers to work optimally, there
must be 50 transmission lines leading to and from all of
the RF ports. Also, there must be a very good ground to
the corners of the crossover to insure proper electrical
performance. If either of these two conditions are not
satisfied, insertion loss, VSWR and isolation parameters
may not meet published specifications.
When a surface mount crossover is mounted to a printed
circuit board, the primary concerns are; insuring the RF
pads of the device are in contact with the circuit trace of
the PCB and insuring the ground plane of neither the
component nor the PCB is in contact with the RF signal.
Since the component is not symmetrical, the crossovers
are specifically oriented in the tape and reel. An example
of how the PCB footprint could look is shown below. In
specific designs, the 50 lines need to be adjusted to the
unique dielectric coefficients and thicknesses as well as
varying pick and place equipment tolerances.
X2A Rev A Mounting Footprint
Dimensions are in Inches [Millimeters]
DC Line
50
Transmission
Line
.063 SQ TYP
[1.60]
.034 TYP
[0.86]
Mutiple
plated thru holes
to ground
.148
[3.75]
To ensure proper electrical and thermal performance
there must be a ground plane with 100%
solder connection underneath the part
PDF 
ZIP