As technology advances, the demand for high-performance printed circuit boards (PCBs) continues to grow, particularly in the realms of microwave and radio frequency (RF) applications. The newly shipped RF-35 PCB from Taconic represents a significant leap forward in this sector, offering a unique combination of affordability, performance, and reliability. In this article, we will explore the features, benefits, technical specifications, and applications of the RF-35 PCB, providing a comprehensive understanding of why it is the ideal choice for engineers and manufacturers alike.
Introduction to the RF-35 PCB
The RF-35 PCB is an organic-ceramic laminate that belongs to Taconic's ORCER family of products. It is constructed using woven glass reinforcement, a technique that enhances the mechanical strength and thermal stability of the material. Taconic's expertise in ceramic fill technology and coated PTFE fiberglass culminates in the RF-35, making it a robust solution for various RF applications.
Why Choose RF-35?
The RF-35 PCB is particularly well-suited for low-cost, high-volume commercial applications. Its exceptional properties make it an attractive option for manufacturers seeking reliable performance without the associated high costs of traditional materials. Key advantages include excellent peel strength, ultra-low moisture absorption, and low dissipation factor, all of which contribute to its superior performance in demanding environments.
| Property | Test Method | Unit | Value | Unit | Value |
| Dielectric Constant @ 1.9 GHz | IPC-TM 650 2.5.5 | | 3.5 | | 3.5 |
| Dissipation Factor @ 1.9 GHz | IPC-TM 650 2.5.5 | | 0.0018 | | 0.0018 |
| Moisture Absorption (.060") | IPC-TM 650 2.6.2.1 | % | 0.02 | % | 0.02 |
| Peel Strength (1/2 oz. copper) | IPC-TM 650 2.4.8 | lbs./linear inch | >8.0 | N/mm | >1.5 |
| Peel Strength (1 oz. copper) | IPC-TM 650 2.4.8 | lbs./linear inch | >10.0 | N/mm | >1.8 |
| Dielectric Breakdown | IPC-TM 650 2.5.6 | kV | 41 | kV | 41 |
| Volume Resistivity | IPC-TM 650 2.5.17.1 | Mohm/cm | 1.26 x 109 | Mohm/cm | 1.26 x 109 |
| Surface Resistivity | IPC-TM 650 2.5.17.1 | Mohm | 1.46 x 108 | Mohm | 1.46 x 108 |
| Arc Resistance | IPC TM 650 2.5.1 | seconds | >180 | seconds | >180 |
| Flexural Strength Lengthwise | ASTM D 790 | psi | >22,000 | N/mm2 | >152 |
| Flexural Strength Crosswise | ASTM D 790 | psi | >18,000 | N/mm2 | >124 |
| Thermal Conductivity | ASTM F 433 | W/m/K | 0.24 | W/m/K | 0.24 |
| Tensile Strength Lengthwise | ASTM D 638 | psi | 27,000 | N/mm2 | 187 |
| Tensile Strength Crosswise | ASTM D 638 | psi | 21,000 | N/mm2 | 145 |
| Dimensional Stability Lengthwise | IPC-TM 650 2.4.39 | in/in | 0.00004 | mm/mm | 0.00004 |
| Dimensional Stability Crosswise | IPC-TM 650 2.4.39 | in/in | -0.0001 | mm/mm | -0.0001 |
| x-y CTE | ASTM D 3386 (TMA) | ppm/°C | 19-24 | ppm/°C | 19-24 |
| z CTE | ASTM D 3386 (TMA) | ppm/°C | 64 | ppm/°C | 64 |
| Flammability | UL-94 | | V-0 | | V-0 |
| Hardness | Rockwell M Scale | | 34 | | 34 |
Key Features and Benefits
Dielectric Properties
At the heart of the RF-35's performance are its impressive dielectric properties. With a dielectric constant of 3.5 at 1.9GHz and a dissipation factor of just 0.0018, the RF-35 minimizes signal loss and ensures consistent performance across a wide range of frequencies. These properties are crucial for applications where signal integrity is paramount.
Mechanical and Thermal Stability
The RF-35 PCB exhibits a dielectric breakdown of 41 kV, showcasing its ability to withstand high voltage applications. Additionally, its low coefficients of thermal expansion (CTE)—19 ppm/°C in the X direction, 24 ppm/°C in the Y direction, and 64 ppm/°C in the Z direction—ensure dimensional stability during thermal cycling. This stability is essential for maintaining the integrity of circuits in environments that experience temperature fluctuations.
Flammability and Safety
With a UL-94 V0 flammability rating, the RF-35 PCB meets stringent safety standards, making it suitable for a wide range of applications. This rating is particularly important in industries where safety is a critical concern, such as telecommunications and automotive.
Low Cost and High Performance
The RF-35 PCB is designed for high-volume production, allowing manufacturers to keep costs low while maintaining high performance. Its excellent peel strength for 1/2 ounce and 1 ounce copper layers facilitates easy rework, a significant advantage in production environments where modifications may be necessary.
Moisture Resistance
The ultra-low moisture absorption rate of the RF-35 PCB enhances its reliability in humid environments. This characteristic is vital for applications in outdoor or high-humidity settings, where moisture can compromise performance.
Technical Specifications
Understanding the technical specifications of this RF-35 PCB is essential for engineers looking to integrate it into their designs. Here are the critical specifications:
- PCB Stackup: 2-layer rigid PCB
- Copper Layer 1: 35 μm
- RF-35 Core: 30 mil (0.762 mm)
- Copper Layer 2: 35 μm
-Board Dimensions: 30.6mm x 29.45mm, +/- 0.15mm
- Minimum Trace/Space: 4/4 mils
- Minimum Hole Size: 0.4mm
- Finished Board Thickness: 0.8mm
- Finished Copper Weight: 1oz (1.4 mils) on outer layers
- Via Plating Thickness: 25 μm
- Surface Finish: Immersion gold
- Silkscreen: Top: White; Bottom: None
- Solder Mask: Top: Blue; Bottom: None
- Quality Assurance: 100% electrical testing prior to shipment
- Quality Standard: IPC-Class-2
Application Areas
The versatility of the RF-35 PCB makes it suitable for a wide array of applications, including:
- Power Amplifiers: Reliable performance in amplifying signals while minimizing distortion.
- Filters and Couplers: Essential for signal processing and managing frequency ranges.
- Passive Components: Ideal for applications requiring stable and consistent performance.
Conclusion
The RF-35 PCB is a testament to Taconic's commitment to innovation and quality in the PCB market. Its combination of low cost, high performance, and exceptional reliability makes it an outstanding choice for engineers and manufacturers in the microwave and RF sectors. By selecting the RF-35, you are not just purchasing a PCB; you are investing in a solution that will elevate your designs and enhance the performance of your applications.
For more information on the RF-35 PCB and how it can meet your specific needs, please contact our sales team or visit our website. Embrace the future of microwave and RF technology with the RF-35 PCB—where quality meets affordability.
| PCB Material: | PTFE Ceramic Fiberglass |
| Designation: | RF-35 |
| Dielectric constant: | 3.5 |
| Dissipation Factor | 0.0018 |
| Layer count: | Double Layer, Multilayer, Hybrid PCB |
| Copper weight: | 0.5oz (17 µm), 1oz (35µm), 2oz (70µm) |
| Laminate thickness: | 10mil (0.254mm), 20mil (0.508mm), 30mil (0.762mm), 60mil (1.524mm) |
| PCB size: | ≤400mm X 500mm |
| Solder mask: | Green, Black, Blue, Yellow, Red etc. |
| Surface finish: | Bare copper, HASL, ENIG, Immersion silver, Immersoin tin, OSP etc.. |
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Double Sided RF-35 PCB 30 Mil Immersion Gold Finished Pcb Board Images
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