4-layer RT/duroid 5880 + TG170 FR4 Mixed Dielectric Material Hybrid PCB ENIG

4-layer RT/duroid5880 + TG170 FR4 Mixed Dielectric Material Hybrid PCB ENIG

This high-performance hybrid PCB, integrates Rogers RT/duroid 5880 high-frequency laminate with TG170 FR-4 material to achieve an optimal balance between signal integrity, mechanical reliability, and cost-effectiveness. Designed for high-frequency, high-precision applications, this 4-layer hybrid PCB addresses the limitations of single-material PCBs, delivering exceptional electrical performance while meeting strict manufacturing and application requirements. Below is a comprehensive overview of the product, including detailed construction specifications, stackup design, material introduction, typical applications, and key technical explanations.

1. PCB Construction Details

The following table summarizes all key construction parameters of the PCB, covering material selection, dimensional specifications, manufacturing standards, and quality control measures, ensuring full transparency of product performance and manufacturability.

2. 4-Layer RT5880 + FR4 Stackup

The 4-layer PCB stack up is designed to optimize signal transmission and structural stability, combining the high-frequency performance ofRT/duroid 5880 with the mechanical strength of FR-4, suitable for complex high-frequency applications. The detailed stackup structure is shown in the below.

3. Introduction to RT/duroid 5880

RT/duroid 5880, developed by Rogers Corporation, is a high-performance PTFE (polytetrafluoroethylene) glass fiber reinforced laminate, renowned for its ultra-low dielectric loss, stable dielectric constant, and excellent environmental adaptability. As a core material ofthis Hybrid PCB Board, it is specifically designed for high-frequency and broadband applications that demand minimal signal dispersion and loss.

The Rogers material features randomly distributed microfibers, providing maximum strength for circuit processing and production, while its extremely low moisture absorption (only 0.02%) makes it ideal for high-humidity environments. With a dielectric constant of 2.20±0.02 (measured at 10 GHz under IPC-TM 2.5.5.5 standard) and a dielectric loss of only 0.0009, it supports frequencies up to the Ku band and beyond, making it a top choice for high-precision RF applications.

Additionally, it is easy to cut into custom shapes and resistant to corrosion from all etching and plating reagents, ensuring high manufacturability and reliability.

4. RT/duroid 5880 Data Sheet

The following table condenses the key technical parameters and compliance information from the RT/duroid 5880 data sheet, providing essential reference for engineers in material selection and application design.

5. Typical Applications

Leveraging the unique advantages of RT/duroid 5880 and FR-4 hybrid design, this RT/Duroid 5880 Hybrid PCB is widely applicable in scenarios requiring high signal integrity, stable performance, and cost optimization.

Typical applications include:

-High-frequency communication equipment  

-Precision test and measurement instruments

-Military electronic systems

-Aerospace components

-Industrial high-precision control systems

6. What is a Hybrid PCB?

A hybrid PCB (hybrid printed circuit board) refers to a special PCB that integrates two or more different dielectric materials in a single board structure, achieving optimal balance between performance and cost through precise lamination technology. Unlike single-material PCBs, hybrid PCBs allow different circuit areas to use the most suitable materials based on their functional requirements: high-performance materials (such as RT/duroid 5880) are used for high-frequency signal paths to ensure low loss and stable transmission, while cost-effective materials (such as FR-4) are used for mechanical support and low-frequency circuits to control overall costs. This design solves the performance bottleneck of single materials in complex applications and provides a more optimized solution for high-frequency, high-precision electronic systems. Our product adopts the most common hybrid form (RT/duroid 5880 + FR-4), combining high-frequency performance and cost-effectiveness to meet diverse application needs.

7. Conclusion

This 4-layer RT/duroid 5880 TG170 FR-4 hybrid PCB represents the perfect integration of high performance and practicality, designed to address the growing demand for high-frequency, high-reliability PCBs in modern electronic systems. With strict construction control, optimized stackup design, and high-quality material selection, the product ensures exceptional electrical performance, mechanical stability, and manufacturability. The 100% electrical test before shipment guarantees zero defects, while the stepped outline and immersion gold finish enhance its adaptability to complex applications. Whether for aerospace, military, communication, or test instruments, this hybrid PCB delivers consistent, reliable performance, making it a trusted choice for engineers and enterprises pursuing high-quality electronic solutions.