2. Rogers RO4835 PCB Features

1. Meets RoHS compliance requirements, making it suitable for applications that mandate a UL 94 V-0 flammability classification
2. Adheres to IPC-4103 industry standards, guaranteeing alignment with established specifications for high-frequency laminates
3. Features a dielectric constant (Dk) of 3.48 +/- 0.05, delivering consistent electrical performance to support precise impedance control
4. Boasts a dissipation factor of 0.0037 at 10 GHz, ensuring minimal signal attenuation during high-frequency operation
5. Offers a Glass Transition Temperature (Tg) exceeding 280 °C (tested via TMA), providing strong thermal stability even in harsh operating conditions
6. Has a Coefficient of Thermal Expansion (CTE) of 10 ppm/°C (X-axis), 12 ppm/°C (Y-axis), and 31 ppm/°C (Z-axis)
7. Utilizes Rogers RO4835 laminate as its base material, which is recognized for its improved oxidation resistance and high-temperature stability
8. Features a 2-layer rigid PCB design, striking a balance between performance capabilities and cost-effectiveness
9. Comes with a finished board thickness of 0.3mm, ideal for compact electronic devices with limited space
10. Uses ENEPIG surface finish, which ensures strong solderability and protection against corrosion

3. Rogers RO4835 PCB Benefits

1. Offers significantly better oxidation resistance than conventional thermoset microwave materials, helping to prolong the PCB’s operational lifespan in difficult environments.
2. Designed specifically for high-volume production applications that require consistent performance, serving as an economical option for mass-manufactured high-frequency devices.
3. Its low-loss properties enable outstanding electrical performance, supporting operation at higher frequencies while ensuring reliable signal transmission.
4. Well-suited for automotive uses—especially automotive radar and sensors—due to its durable performance and ability to withstand harsh environmental conditions.
5. The tight tolerance of its dielectric constant allows for precise control of impedance transmission lines, which is vital for preserving signal integrity in high-frequency circuits.
6. Works seamlessly with lead-free manufacturing processes, preventing blistering or delamination during soldering and ensuring compliance with global environmental regulations.
7. A low Z-axis expansion coefficient enhances the reliability of plated through holes (PTH), lowering the risk of connection failures and improving long-term structural stability.
8. A low in-plane expansion coefficient keeps the PCB dimensionally stable throughout all phases of circuit processing, reducing manufacturing defects and increasing yield rates.
9. Compatibility with standard FR-4 processing procedures simplifies manufacturing, reduces production complexity, and cuts overall fabrication costs.
10. Meets IPC-Class-2 quality standards, offering an optimal blend of cost and performance with only minor cosmetic blemishes that do not affect functionality.
11. The optional Rogers proprietary LoPro Reverse treated copper foil further decreases insertion loss, making it perfect for ultra-sensitive high-frequency applications.

4. PCB Construction Details

Construction Item	Specification
Base Material	Rogers RO4835
Layer Count	2 layers
Board Dimensions	45.6mm x 78mm = 1 PCS, +/- 0.15mm
Minimum Trace/Space	5/7 mils
Minimum Hole Size	0.4mm
Blind or Buried Vias	No
Finished Board Thickness	0.3mm
Finished Cu Weight (All Layers)	1 oz (1.4 mils)
Via Plating Thickness	20um
Surface Finish	ENEPIG
Top Silkscreen	Black
Bottom Silkscreen	No
Top Solder Mask	No
Bottom Solder Mask	No
Silkscreen on Solder Pads	No
Electrical Test	100% Electrical Test used

5. PCB Stackup

2-layer rigid PCB, with the following structure (from top to bottom):

1. Finished Copper - 35 μm
2. RO4835 Dielectric - 10 mil (0.254mm)
3. Finished Copper - 35 μm

6. PCB Statistics

1. Components: 12
2. Total Pads: 23
3. Thru Hole Pads: 9
4. Top SMT Pads: 14
5. Bottom SMT Pads: 0
6. Vias: 12
7. Nets: 2

7. Type of Artwork Supplied

Gerber RS-274-X

8. Accepted Standard

IPC-Class-2 (adheres to industry-established quality criteria for high-frequency and automotive applications, balancing cost-effectiveness and performance with minor cosmetic imperfections that do not compromise functionality).

9. Service Area

Worldwide

 

10. Typical Applications

1. Automotive Radar and Sensors
2. Point-to-Point Microwave Systems
3. Power Amplifiers
4. Phased-Array Radar
5. RF Components

11.Summary

Engineered for high-frequency applications,  Rogers RO4835  is a reliable, cost-effective printed circuit board that leverages  RO4835 laminate to deliver improved thermal stability and oxidation resistance. Measuring 0.3mm thick with a 2-layer rigid construction and complying with IPC-Class-2 standards,  Rogers RO4835 PCB Board provides low dielectric loss, precise impedance control, and excellent dimensional stability—qualities that make it perfect for automotive radar, sensors, point-to-point microwave systems, and other performance-sensitive high-frequency devices. It is compatible with both lead-free and standard FR-4 manufacturing processes, meets RoHS compliance requirements, and can be optionally fitted with LoPro Reverse treated copper foil from Rogers, combining top-tier performance with cost-efficiency. Backed by worldwide service coverage, RO4835 substrate PCB offers a dependable solution for high-volume, high-frequency electronic applications across multiple industries.

 

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen, China, serving customers worldwide.

 

We are devoted to delivering high-frequency PCB products and solutions of the highest quality, along with customized service. Get in touch with us to start your project !

Visit https://www.bicheng-enterprise.com to learn more.