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Rogers RO4725JXR™ DK2.55 Df0.0022 (0.020-0.060") Antenna Grade Laminate
Brief Introduction
Rogers RO4725JXR™ is an antenna-grade laminate featuring a ceramic-filled hydrocarbon and woven glass reinforcement system. It provides stable dielectric constant (DK) of 2.55, low loss (dissipation factor 0.0022 at 10 GHz), and excellent passive intermodulation (PIM) performance. Designed for high-performance RF antenna applications, it combines the electrical performance of PTFE-based materials with the ease of processing of traditional hydrocarbon laminates, making it ideal for base station antennas, automotive radar, and RF identification (RFID).
Technical Features & Benefits
- Dielectric Constant (DK): 2.55 ±0.05 at 10 GHz (stable across frequency and temperature)
- Low Dissipation Factor: 0.0022 at 10 GHz (typical), enabling low-loss RF designs
- Excellent PIM Performance: Engineered for low passive intermodulation, suitable for multi-band antenna systems
- Low moisture absorption: ≤0.06%, ensuring consistent electrical performance in various environments
- High thermal conductivity: 0.60 W/(m·K) (Z-direction), superior heat dissipation for power applications
- High volume resistivity and surface resistivity for reliable high-frequency operation
- UL 94 V-0 flammability rating
- Low CTE (Coefficient of Thermal Expansion) for improved dimensional stability
- Ideal for automated assembly processes due to excellent mechanical strength and stability
- Compatible with standard PCB processing (etching, drilling, plating)
Typical Properties: Rogers RO4725JXR™
| Properties |
Test Conditions |
Unit |
RO4725JXR |
| Electrical Properties | | | |
| Dielectric Constant (Typical) | 10 GHz | – | 2.55 |
| Dielectric Constant Tolerance | – | – | ±0.05 |
| Dissipation Factor (Typical) | 10 GHz | – | 0.0022 |
| Temperature Coefficient of Dk | -40°C to 125°C | ppm/°C | -40 |
| Peel Strength (1 oz. ED Copper) | After solder float | N/mm | >1.05 |
| Volume Resistivity | Normal Condition | MΩ·cm | ≥1.0×10⁸ |
| Surface Resistivity | Normal Condition | MΩ | ≥1.0×10⁷ |
| Dielectric Strength (Z-direction) | – | kV/mm | >30 |
| Thermal & Mechanical Properties | | | |
| CTE (XY-direction) | -40°C to 125°C | ppm/°C | 13-17 |
| CTE (Z-direction) | -40°C to 125°C | ppm/°C | 35-45 |
| Thermal Stress | 260°C, 10s, 3 cycles | – | No Delamination |
| Water Absorption | 20±2°C, 24 hours | % | ≤0.06 |
| Density | Room Temperature | g/cm³ | 2.3 |
| Long-term Operating Temperature | – | °C | -40 to +150 |
| Thermal Conductivity | Z-direction | W/(m·K) | 0.60 |
| Flammability Rating | – | UL-94 | V-0 |
| Material Composition | – | – | Ceramic-filled Hydrocarbon, Woven Glass Fabric |
Application Areas
- Base Station Antennas (4G/5G, MIMO, phased arrays)
- Automotive Radar (ADAS, 77 GHz)
- RF Identification (RFID) Tags and Readers
- Satellite Communication Systems
- Power Amplifiers and Low-Noise Amplifiers
- Beamforming Networks and Feed Networks
Available Configurations
- Copper Foil Options: Standard ED Copper (electrodeposited) and Reverse Treated Foil (RTF) available. Typical thickness: 0.5 oz (18µm), 1 oz (35µm).
- Standard Panel Sizes Available:
- 12" x 18" (305 mm × 457 mm)
- 24" x 18" (610 mm × 457 mm)
- 48" x 36" (1220 mm × 914 mm)
- Other sizes available upon request
- Available Thicknesses:
- 0.020" (0.508 mm), 0.030" (0.762 mm), 0.060" (1.524 mm)
- Custom thicknesses and core constructions may be available; contact for details
- Metal Backed Options: RO4725JXR can be supplied with aluminum or copper base for improved thermal management. Example: RO4725JXR-AL (aluminum-backed).
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