0.8mm DiClad 870 PCB With Hot Air Solder Leveling For Digital Radio Antennas

Introduction

Today we'll be discussing a high-frequency PCB with a lower dielectric constant called DiClad 870 microwave PCB.

DiClad 870 is a Rogers laminate that utilizes woven fiberglass reinforced, PTFE-based composites. This unique composition enables a stable, lower dielectric constant by reducing the number of fiberglass plies and increasing the PTFE content. As a result, it supports wider line widths, reducing insertion loss.

Now, let's dive into the data sheet to explore the properties of DiClad 870.

Typical Properties of DiClad 870

DiClad 870 exhibits excellent electrical properties. It has a dielectric constant of 2.33 at both 1 MHz and 10 GHz, with a low dissipation factor of 0.0009 at 1 MHz and 0.0013 at 10 GHz.

The thermal coefficient of dielectric constant ranges from -161 ppm/°C to -10°C to +140°C.

DiClad 870 boasts a high volume resistivity of 1.5 x 10^9 MΩ-cm and a surface resistivity of 3.4 x 10^7 MΩ.

Moreover, it demonstrates an impressive arc resistance of over 180 seconds, tested according to ASTM D-495 using the D48/50 method. Similarly, the dielectric breakdown voltage exceeds 45 kV, tested according to ASTM D-149 using the D48/50 method.

In terms of mechanical properties, DiClad 870 exhibits a peel strength of 14 lbs. per inch after thermal stress. It also shows excellent tensile modulus, tensile strength, compressive modulus, and flexural modulus at 23°C.

When it comes to thermal properties, DiClad 870 offers a low coefficient of thermal expansion of 17 ppm/°C (X axis), 29 ppm/°C (Y axis), and 217 ppm/°C (Z axis) within the temperature range of 0°C to 100°C. However, its thermal conductivity is only 0.257 W/mK at 100°C.

DiClad 870 meets the UL94-V0 flammability rating, ensuring its safety.

Let's now explore the physical properties of DiClad 870.

It has a density of 2.26 g/cm3 at 23°C, indicating its dense and sturdy nature.

With a water absorption rate of 0.02%, DiClad 870 demonstrates low water absorption.

Lastly, let's look at the outgassing characteristics.

Outgassing refers to the release of volatile materials during use. DiClad 870 shows minimal outgassing with a total mass loss of 0.02%, collected volatile condensable material of 0.00%, and water vapor regain of 0.01% at 125°C and ≤ 10^-6 torr, with no visible condensate.

Our PCB Capability (DiClad 870)

We offer a range of options for DiClad 870 PCBs, including single-sided, double-sided, multi-layer, and hybrid types.

The available thicknesses for DiClad 870 PCBs are 31 mils, 93 mils, and 125 mils.

You can choose between 1oz and 2oz finished copper on the track lines.

The maximum size for a DiClad 870 PCB is 400mm by 500mm, and it can be a single board or a panel with different designs.

We offer solder mask colors such as green, black, blue, red, and yellow.

For pad surface finishes, we provide options like immersion gold, HASL, immersion silver, immersion tin, OSP, ENEPIG, pure gold, and bare copper.

This type of PCB is commonly used in applications such as radar feed networks, commercial phased array networks, low-loss base station antennas, and RF components like filters and couplers.

DiClad 870 materials are compatible with conventional electroless copper and direct deposit metallization processes, enabling the use of standard equipment and chemical processes for plating, imaging, and etching circuit patterns on the material.

Company Profile

Founded in 2003, Shenzhen Bicheng Electronics Technology Co., Ltd is an established high frequency PCB supplier and exporter in Shenzhen China, severing cellular base station antenna, satellite, high frequency passive components, microstrip line and band line circuit, millimeter wave equipment, radar systems, digital radio frequency antenna and other fields worldwide for 18 years. Our high frequency PCBs are mainly built on 3 high frequency material brands: Rogers Corporation, Taconic and Wangling. Dielectric constant ranges from 2.2 to 10.2 etc.

Bicheng PCB is headquartered in Shenzhen, a city with great economic vitality. Based in China, we adhere to the philosophy of servicing small and medium sized companies offering variety of circuit boards to meet the demands of market.

Main Business & PCB Applications

We maintain the highest standards which support products that exhibit exceptional quality, performance and reliability. We also have divisions of FR-4 circuit board, flexible circuits and metal core PCBs featured as prototypes, small runs to mass production. We actively research and build such high value added PCB projects as HDI, quick turn, impedance control, heavy copper and backplane board etc. This has made our PCB products generate an effective prolongation and complementation, as well as formation of integrated products line ranging from low-end to high-end.The circuit boards are used in the industries of home appliances, portable and consumable electronics, medical filed, aerospace as well as telecommunications etc.

Main Material Partners