Model X2BS Rev. A SMT Crossover Description The X2BS 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 X2BS 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, G10 and polyamide. ELECTRICAL SPECIFICATIONS** Features: • • • • • • • • • DC – 6.0 GHz RF – RF Crossover Low Loss High Isolation Surface Mountable Tape And Reel Convenient Package 100% Tested Lead Free Frequency Port Impedance Return Loss Isolation GHz Ohms dB Min DB Min DC – 2.5 2.5 – 3.6 3.6 – 6.0 50 50 50 20 18 15 Insertion Loss Power dB Max Watts ºC / Watt ºC 0.05 0.10 0.20 30 15 10 143.4 143.4 143.4 -55 to +85 -55 to +85 -55 to +85 ΘJC **Specification based on performance of unit properly installed on microstrip printed circuit boards with 50 Ω nominal impedance. Specifications subject to change without notice. Outline Drawing Top View (Near-side) .200±.010 [5.08±0.25] 4X GND 50 30 20 Operating Temp. Side View .071±.007 [1.80±0.18] RF IN/OUT RF IN/OUT .200±.010 [5.08±0.25] RF IN/OUT Bottom View (Far-side) RF IN/OUT Dimensions are in Inches [Millimeters] X2BS Rev A Mechanical Outline RF IN/OUT .020±.004 TYP [0.51±0.10] RF IN/OUT GND .025±.008 [0.65±0.20] RF IN/OUT RF IN/OUT .056±.004 [1.42±0.10] Available on Tape and Reel For Pick and Place Manufacturing. USA/Canada: Toll Free: Europe: .072±.008 [1.83±0.20] (315) 432-8909 (800) 544-2414 +44 2392-232392 Model X2BS Rev. A Typical Performance: 0 GHz. to 6.0 GHz. Insertion Loss X2BS 0.00 -20 -0.10 Insertion Loss (dB) Return Loss (dB) Return Loss X2BS -10 -30 -40 -50 -0.20 -0.30 -0.40 -60 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 -0.50 500 6000 1000 1500 2000 2500 Frequency (MHz) 3500 4000 4500 5000 5500 6000 4500 5000 5500 6000 Phase Balance X2BS 6.0 -30.00 4.0 Phase Balance (Degrees) Isolation (dB) Isolation X2BS -20.00 -40.00 -50.00 -60.00 -70.00 -80.00 500 3000 Frequency (MHz) 2.0 0.0 -2.0 -4.0 -6.0 1000 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 500 1000 1500 2000 2500 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. USA/Canada: Toll Free: Europe: (315) 432-8909 (800) 544-2414 +44 2392-232392 3000 3500 4000 Frequency (MHz) Available on Tape and Reel For Pick and Place Manufacturing. 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] 4X 50 Transmission Line .034 TYP [0.86] .034 TYP [0.86] Dimensions are in Inches [Millimeters] X2BS Rev A Mounting Footprint .042 TYP [1.07]