Rogers RO4725JXR Antenna Grade High Frequency Printed Circuit Board DK2.55 RF PCB 30.7mil 60.7mil
(Printed Circuit Boards are custom-made products, the picture and parameters shown are just for reference)
Rogers RO4725JXR antenna grade laminates offer a dependable and cost-effective substitute for traditional PTFE-based laminates.
The resin systems used in RO4725JXR dielectric materials offer the essential properties required for optimal antenna performance. RO4725JXR antenna grade laminates are fully compatible with conventional FR-4 and high-temperature lead-free solder processes. Unlike traditional PTFE-based laminates, these materials do not require special treatment for plated through-hole preparation. By choosing RO4725JXR laminates, designers can achieve cost-effective solutions without compromising performance.
Features:
1.Dielectric constant of 2.55+/- 0.05
2.Low Z-axis coefficient of thermal expansion at 25.6 ppm/°C
3.Low TCDk (Thermal Coefficient of Dielectric Constant) of +34 ppm/°C
4.Dissipation factors ranging from .0022 to .0026
5.High glass transition temperature (Tg) exceeding 280°C
Benefits:
1. Low insertion loss, ensuring minimal signal loss during transmission
2. Dk (Dielectric Constant) matched to standard PTFE-based antenna offerings, facilitating seamless integration with existing designs
3. Reduced passive inter-modulation (PIM), leading to improved signal quality and less interference
4. Consistent circuit performance, providing reliable and predictable results.
Our PCB Capability( RO4725JXR)
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PCB Capability (RO4725JXR)
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PCB material:
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Hydrocarbon / Ceramic / Woven Glass
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Designation:
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RO4725JXR
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Dielectric constant:
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2.55
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Layer count:
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Sinlge-sided PCB, Double-sided PCB, Multi-layer PCB, Hybrid PCB
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Dielectric thickness:
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30.7mil(0.780mm), 60.7mil (1.542mm)
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Copper weight:
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1oz (35µm), 2oz (70µm)
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PCB size:
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≤400mm X 500mm
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Solder mask:
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Green, Black, Blue, Red, Yellow, White etc.
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Surface finish:
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Immersion gold, HASL, Immersion silver, Immersion tin, Bare copper, OSP, ENEPIG, Pure gold etc..
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Typical Applications
Cellular Base Station Antennas
RO4725JXR Typical Properties
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Property
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RO4725JXR
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Direction
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Units
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Condition
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Test Method
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Dielectric Constant, εr Process
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2.55 ± 0.05
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Z
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10 GHz/23°C
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IPC-TM-650, 2.5.5.5
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Dielectric Constant, εr Design
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2.64
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Z
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1.7 GHz - 5
GHz
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Differential Phase Length Method
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Dissipation Factor
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0.0026
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Z
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10 GHz/23°C
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IPC-TM-650, 2.5.5.5
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0.0022
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2.5GHz
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Thermal Coefficient of εr
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+34
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Z
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ppm/°C
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-50°C to 150°C
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IPC-TM-650, 2.5.5.5
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Volume Resistivity (0.030")
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2.16 X 10^8
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MΩ•cm
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COND A
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IPC-TM-650, 2.5.17.1
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Surface Resistivity (0.030")
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4.8 X 10^7
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MΩ
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COND A
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IPC-TM-650, 2.5.17.1
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PIM
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-166
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dBc
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50 ohm
0.060”
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43dBm
1900MHz
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Electrical Strength (0.030”)
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630
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Z
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V/mil
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IPC-TM-650, 2.5.6.2
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Flexural Strength MD
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121 (17.5)
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MPa
(kpsi)
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RT
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ASTM D790
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CMD
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92 (13.3)
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Dimensional Stability
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<0.4
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X,Y
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mm/m
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after etch
+E2/150°C
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IPC-TM-650, 2.4.39A
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Coefficient of Thermal
Expansion
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13.9
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X
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ppm/°C
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-55 TO 288°C
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IPC-TM-650, 2.1.24
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19.0
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Y
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25.6
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Z
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Thermal Conductivity
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0.38
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Z
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W/mK°
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50°C
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ASTM D5470
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Moisture Absorption
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0.24%
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%
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48/50
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IPC-TM-650 2.6.2.1 ASTM D570
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Tg
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>280
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°C
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IPC-TM-650 2.4.24
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Td
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439
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°C
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ASTM D3850
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Density
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1.27
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gm/cm3
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ASTM D792
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Copper Peel Strength
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8.5
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pli
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1 oz LoPro EDC
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IPC-TM-650 2.4.8
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Flammability
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N/A
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UL94
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Lead-Free Process Compatible
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YES
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