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Model X2B
SMT Crossover
Description
Rev. B
The X2B is a low profile crossover to intersect an RF and RF circuit trace in an easy to use surface mount package designed for frequencies up to 6 GHz. The X2B is ideal for any application where an RF circuit must intersect with another RF circuit without resorting to a multilayer PCB. Parts have been run through 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.
Features:
* * * * * * * *
ELECTRICAL SPECIFICATIONS**
Frequency
GHz
Port Impedance
Ohms
Return Loss
dB Min
Isolation
DB Min
DC - 6.0 GHz RF - RF Crossover Low Loss High Isolation Surface Mountable Tape And Reel Convenient Package 100% Tested
DC - 2.5 2.5 - 3.6 3.6 - 6.0 Insertion Loss
dB Max
50 50 50 Power
Watts
20 18 15 JC
C / Watt
50 30 20 Operating Temp.
C
0.05 0.10 0.20
30 15 10
143.4 143.4 143.4
-55 to +85 -55 to +85 -55 to +85
Outline Drawing
Top View (Near-side)
**Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 nominal impedance. Specifications subject to change without notice.
Side View
Bottom View (Far-side)
.200.010 [5.080.25] 4X GND RF IN/OUT
.071.007 [1.800.18] RF IN/OUT .200.010 [5.080.25] GND RF IN/OUT
.020.004 TYP [0.510.10] RF IN/OUT .025.008 [0.650.20]
RF IN/OUT
RF IN/OUT Dimensions are in Inches [Millimeters] X2B Rev A Mechanical Outline
RF IN/OUT
RF IN/OUT .056.004 [1.420.10]
.072.008 [1.830.20]
Available on Tape and Reel For Pick and Place Manufacturing.
USA/Canada: Toll Free: Europe:
(315) 432-8909 (800) 544-2414 +44 2392-232392
Model X2B
Rev. B
Typical Performance: 0 GHz. to 6.0 GHz.
Return Loss X2B
-10
0.00
Insertion Loss X2B
-20
-0.10
-30
Insertion Loss (dB)
1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
Return Loss (dB)
-0.20
-40
-0.30
-50
-0.40
-60 500
-0.50 500
1000
1500
2000
2500
3000
3500
4000
4500
5000
5500
6000
Frequency (MHz)
Isolation X2B
-20.00
6.0
Frequency (MHz) Phase Balance X2B
-30.00
4.0
Isolation (dB)
-40.00
Phase Balance (Degrees)
1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
2.0
-50.00
0.0
-60.00
-2.0
-70.00
-4.0
-80.00 500
-6.0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000
Frequency (MHz)
Frequency (MHz)
Mounting
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.
Mounting Footprint
To ensure proper electrical and thermal performance there must be a ground plane with 100% solder connection underneath the part
Multiple plated thru holes to ground
.063 SQ TYP [1.60]
.034 TYP [0.86] .042 TYP [1.07]
4X 50 Transmission Line .034 TYP [0.86]
Dimensions are in Inches [Millimeters] X2B Rev A Mounting Footprint
USA/Canada: Toll Free: Europe:
(315) 432-8909 (800) 544-2414 +44 2392-232392
Available on Tape and Reel For Pick and Place Manufacturing.

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