Panasonic R-1786 laminate series is designed for next-generation printed circuit boards that demand both electrical performance and manufacturing precision. In this article, we’ll discuss what really characterizes the Panasonic R-1786 laminates. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the high CTI circuit board, so please feel free to contact us.
What is the Panasonic R-1786 Laminate?
Panasonic R-1786 PCB material offers a Tg value of 140 degrees Celsius, the glass transition temperature describes how a PCB material transforms from a solid state to a molten state. Panasonic R-1786 laminate is an efficient insulator due to its low Dk value. This material features a dielectric constant of 4.0 at 1 GHz. It has a dissipation factor of 0.007 at 1 GHz. The Panasonic R-1786 laminate is a high thermal conductivity glass composite PCB material that exhibits excellent electrical and mechanical properties.
The Panasonic laminate is a high-performance printed circuit board (PCB) material characterized by numerous advantageous properties. Excellent tracking resistance (CTI ≥600V), excellent CAF resistance and excellent thickness accuracy. Reduces CO₂ emission amount in our manufacturing process to onequarter by our unique manufacturing process. Compared with our conventional FR-4 (R-1705). Its key attributes encompass a low dielectric constant, which enhances signal integrity, as well as robust insulation reliability.
The Panasonic laminate is specifically recognized as a two-sided copper-clad laminate, whereas its one-sided counterpart is designated as the Panasonic R-1781 laminate. Additionally, the Panasonic R-1786 laminate is well-suited for applications in digital home appliances, such as power conditioners, refrigerators, washing machines, and antenna circuit boards.
Panasonic R-1786 Laminate Data Sheet
Features of the Panasonic R-1786 Laminate
Temperature of glass transition
Panasonic R-1786 features a glass transition temperature of 140 degree Celsius. this is a low Tg value for a PCB material. Generally, the glass transition temperature of a material describes its mechanical stability.
Dielectric constant
Panasonic PCB material features a dielectric constant of 4.0 at 1 GHz. Therefore, this material exhibits weak polarization when exposed to an externally applied electric field. The dielectric constant is an important factor in determining how efficiently signals can propagate through the material.
Dissipation factor
Panasonic R-1786 PCB material has a dissipation factor of 0.007 at 1 GHz. offers a low dissipation factor. This low dissipation factor contributes to efficient power transmission and minimizes unwanted heat generation within the PCB.
High heat resistance
Panasonic R-1786 has a value of 240 degrees Celsius. This is a well-known heat property, as well as the measurement of a difference in temperature whereby the Panasonic R-1786 resists a flow of heat. The rate of heat transfer in a PCB material will determine its resistance to heat.
Tracking resistance
Panasonic PCB material has a CTI≥600, this property is very significant. This is because it offers a quantitative metric by which different materials can be compared. CTI measures the extent at which a PCB material can withstand the unwanted flow of current between traces on the circuit board.
Coefficient of Thermal Expansion
The coefficient of thermal expansion indicates how much a material can expand when it is heated. At the X and Y axis at α1, using the TMA method, the Panasonic R-1786 laminate has a CTE value of 25 ppm/℃ and 28 ppm/℃ respectively. Furthermore, at the Z-axis and α1, it has a CTE value of 65 ppm/℃.
Insulation Reliability (CAF Resistance)
This laminate resist Conductive Anodic Filamentation (CAF), enhancing long-term reliability in humid or high-voltage conditions. The material demonstrates outstanding resistance to Conductive Anodic Filament (CAF) formation, which helps prevent internal short circuits caused by moisture and voltage stress—enhancing long-term reliability and safety.
Water Absorption
The water absorption of the Panasonic R-1786 laminate is 0.08%. This value is great being that when a PCB material absorbs water and moisture, it can lead to different failure mechanisms. Low moisture uptake preserves electrical characteristics over the product lifecycle and enhances reliability in humid environments.
What is the Application of Panasonic R-1786 Laminate?
The unique properties of R-1786 laminates make them suitable for a wide range of industries:
Home & Digital Appliances
Ideal for circuit boards in smart devices, IoT systems, and control modules due to thermal stability and signal integrity. Control boards for washing machines, refrigerators, and HVAC systems—where insulation reliability and thermal endurance are critical.
LED Lighting
Panasonic R-1786 laminate delivers both, making it ideal for LED driver boards, industrial lighting modules, and high-brightness LED fixtures. Supports high-power LED drivers with excellent heat resistance and electrical insulation. High-power LED modules and drivers benefit from the material’s heat resistance and CTI performance.
Meter Panels & Power Supply Systems
For meter panels used in energy management and industrial monitoring systems, Panasonic R-1786 laminate offers high CTI and CAF resistance, ensuring safe and reliable operation in high-voltage environments. Ensures reliability in energy meters, industrial power supplies, and EV charging systems. SMPS and UPS modules, where insulation between high-voltage circuits and ground must be unimpeachable.
Amusement Machines
Panasonic R-1786 laminate meets these needs with its robust mechanical and electrical properties. Withstands mechanical stress and humidity in gaming consoles and arcade systems. Gaming consoles and arcade equipment subject to frequent thermal cycling and mechanical stress.
Antenna Structures (5G Terminals & Equipment)
With the rollout of 5G networks, there’s increasing demand for materials with excellent high-frequency characteristics. Panasonic R-1786 laminate supports 5G communication terminals and infrastructure equipment thanks to its low Dk/Df values and superior signal integrity.
Manufacturing Advantages of Panasonic R-1786 laminate
Beyond its electrical and thermal merits, Panasonic R-1786 laminate offers significant manufacturing benefits:
Having excellent high frequency property
Panasonic R-1786 laminate is optimized for high frequency applications, delivering consistent performance at higher frequencies—ideal for 5G antennas, wireless modules, and IoT devices. Consistent dielectric properties across board-to-board runs, ensuring uniform impedance control.
Excellent board thickness accuracy
Tight thickness tolerances yield predictable impedance and layer planarity, reducing scrap and rework. The material ensures consistent thickness control during production, supporting precise design specifications and improving yield rates—especially important for multilayer and HDI board manufacturing.
Excellent workability
Panasonic R-1786 laminate offers good drillability, routability, and etchability, making it easy to work with using standard PCB fabrication techniques. This results in higher throughput, reduced tool wear, and lower production costs. Compatible with standard PCB processes (laser drilling, etching, plating), reducing production costs and lead times.
Conclusion
Panasonic R-1786 laminates combine cutting-edge electrical properties, thermal resilience, and ease of manufacturing, positioning them as a top choice for next-gen electronics. For engineers and designers looking to ensure performance, reliability, and ease of manufacturing, R-1786 laminate is a proven choice that delivers results across the board.
