What are the Differences Between Rogers RO4700 and RO4830?

Rogers RO4700 and RO4830 are two high frequency circuit boards produced by Rogers Corporation. They each have unique characteristics and are suitable for different application scenarios. Here are the differences between RO4700 and RO4830:

Dielectric Constant (Dk):

RO4700: 

Low dielectric constant options are available, with Dk values including 2.55 (+/- 0.05) and 3.0 (+/- 0.05), which helps reduce losses in signal transmission and is suitable for high-frequency applications.

RO4830: 

Design Dk is 3.24@77GHz, slightly higher than RO4700, suitable for millimeter wave applications such as 77GHz automotive radar sensors.

Loss Factor (Df):

RO4700: 

The loss factors at 2.5GHz are 0.0022 and 0.0023 respectively, which shows that it has lower signal loss at low frequencies.

RO4830: 

The insertion loss at 77GHz is extremely low, 2.2dB/inch, suitable for applications requiring low insertion loss.

Application Areas:

RO4700: 

As an antenna-grade material, it is designed to replace traditional PTFE-based antenna materials, optimize antenna performance, and is suitable for applications requiring high-performance antennas.

RO4830: 

Especially suitable for price-sensitive millimeter wave applications, such as 76-81 GHz automotive radar sensors, providing a cost-effective solution.

Flammability Rating:

RO4700: 

The specific flame retardant grade is not specified in the search results, but generally Rogers' high-performance materials will meet certain industry standards.

RO4830: 

With UL 94 V-0 flame retardant rating, it is suitable for applications that have special requirements for flame retardant performance.

Processing Technology Compatibility:

RO4700 and RO4830: 

Both mention compatibility with FR-4 processing technology, meaning they can be manufactured using standard PCB processing techniques.

Antioxidant Properties:

RO4830: 

It has advanced anti-oxidation design and has stronger oxidation resistance than other hydrocarbon materials.

Cost-effectiveness:

RO4700: 

Designed to provide a more cost-effective solution compared to PTFE-based materials while optimizing performance.

RO4830: 

Special emphasis is placed on its high cost performance in cost-sensitive applications and its suitability for mass production.

Special Features:

RO4700: 

May have specific characteristics such as low CTE (coefficient of thermal expansion) and high Tg (glass transition temperature) that help improve circuit reliability and performance.

RO4830: 

Provides excellent laser drilling performance, which is very important for manufacturing precision microwave circuits.

Material System Optimization:

RO4700 and RO4830: 

Both refer to optimized filler, resin, and glass composite systems, but specific optimization directions may be tailored to their respective applications.

Environmental Standards:

RO4830: 

Complies with RoHS standards, which is a requirement for environmental protection and limits the use of hazardous substances.

Product Features:

RO4700: 

Mentioned as the industry’s first RO4000® low Dk antenna grade material, highlighting its cost-effectiveness and performance optimization in antenna design.

RO4830: 

In addition to having low insertion loss, it is also specifically mentioned to use LoPro copper foil, which may mean that it has a special design to reduce conductor loss.

Antioxidant Properties:

RO4830: Compared with traditional thermoset materials, the oxidation resistance is improved by 10 times, which is a significant advantage for improving the durability and reliability of the material.

Copper Foil Treatment:

RO4830: 

Mentioned reverse-processed smooth LoPro® copper foil, which may help improve circuit performance and processing consistency.

Environmental Standards:

RO4830: 

Clearly states compliance with RoHS standards, which are environmental standards that restrict the use of hazardous substances.

Product Series:

RO4700: 

Possibly part of Rogers' family of antenna-grade laminates designed for high-performance antennas.

RO4830: 

Probably more focused on millimeter wave applications, especially in the field of automotive radar sensors.

Market Positioning:

RO4700: 

May be positioned more for antenna applications that require optimized cost and performance.

RO4830: 

It may be more targeted in cost-sensitive millimeter wave applications, especially in the automotive industry.

Electrical Performance:

RO4700 and RO4830: 

Both have excellent electrical performance, but specific electrical parameters, such as dielectric constant and loss factor, may be optimized based on different application requirements.

Processing and Manufacturing:

Both materials mention compatibility with the FR-4 processing process, indicating that they can both be used in standard PCB manufacturing environments without the need for special equipment or processes.

Supply and Ordering Cycle:

Some search results may also mention product availability and ordering lead times, information that is important for supply chain management and production planning.

Environmental Protection and Reliability:

RO4830: Due to its compliance with UL 94 V-0 flame retardant rating and RoHS standards, it may have clearer advantages in terms of environmental protection and reliability.

This additional information further refines the application range and properties of both materials, helping users make choices based on specific application needs. However, in order to obtain more detailed and accurate product information, it is recommended to consult Rogers Corporation's official technical documentation or technical support directly.