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What is Rogers AD255C PCB ?

If you are in the market for laminates, you have probably already come across the Rogers AD255C. This article will provide you with a brief introduction to the product and its benefits and applications. Read on to learn more about this product.

Rogers AD255C laminates combine ceramic materials with fluoropolymer resin to produce RF laminate material with low thermal expansion and loss. These laminates have good mechanical toughness and dielectric constant, and are compatible with a wide variety of microwave applications. The material combines superior thermal characteristics of fluoropolymer resin systems, having unique fiberglass reinforcement and materials to produce RF laminate materials. The produced materials have:

  • Less thermal expansion characteristics
  • Lower loss
  • Less PIM (passive intermodulation)

An AD255C laminate is suitable for different RF and microwave applications. These applications are in telecommunication infrastructures. The two reasons for this suitability are:

  • PTFE stability over many temperatures and frequency ranges
  • Low loss characteristics

Features of Rogers AD255C Laminates

It has reduced loss PTFE, and the composite for the ceramic field is a loss tangent of 0.0014 at 10GHz. The Rogers AD255C offers a dielectric constant of three and a dissipation factor of 0. 0019. The company’s facility is privately owned, employs 150 people, and is ITAR-listed for small businesses. The Rogers Ultralam 2000 and Rogers RO4350 are made of polyimide.

AD255C Laminates have a 2.55 dielectric constant and tight tolerance. The Rogers AD255C offers a combination of ceramic materials with the excellent thermal properties of the fluoropolymer resin system. The combination of ceramic materials and fiberglass reinforcement provides a low-loss RF laminate material with lower thermal expansion and passive intermodulation. This material is stable over a broad frequency range and features low loss properties, making it the ideal choice for microwave high frequency PCB .

The profile power of V is low. 

The laminate has a reduced Z-directions CTE of 50 ppm/ °C

Available panel sizes are extensive. 

The Rogers AD255C has a patented high-frequency technology that supports a broad range of applications. Advanced Driver Assistance Systems (ADAS) and vehicular thermal management are just a few of the uses of the Rogers AD255C. The new circuit materials are also useful for IoT devices, communications systems, radar systems, and backhaul radios for both present and future wireless networks. These laminates also offer the best in-class performance and durability, and are compatible with all major antenna systems.

Advantages of Rogers AD255C Laminates

A wide variety of microwave applications benefit from the unique properties of Rogers AD255C laminates. The composite materials of these laminates combine the superior thermal properties of fluoropolymer resins with glass fiber reinforcement for improved strength, low dielectric loss, and low passive intermodulation. In addition, the high-frequency performance of PTFE makes them ideal for use in a wide variety of microwave applications.

They have a low insertion loss. 

The antenna applications PIM is low.

The Rogers AD255C Laminates have phase stability because of a better TCEr. 

Rogers AD255C Laminates are compatible with the used processing PTFE standards. These standards based on PCB substrates. 

Rogers AD255C laminate materials

The increase in antenna performance needs is a constant trend in the current market. As a result, the materials meet the market design needs of the current and future markets. 

These AD series products are PTFE-based, glass-reinforced antenna materials. They give:

They are good in PIM (passive intermodulation) performance. In addition, the glass-reinforced antenna affords better circuit processability. The processability enables the high fabrication of the circuit board. 

The manufacture of the AD series products aims to meet the huge dielectric constant varieties. These varieties get needed in the current antenna requirements. The available options for dielectric constant are 2.55, 2.50, 2.60, 3.20, 3.50 and 3.00. they have a tolerance of negative or positive 0.05. The tight control and the different options help the circuit always get the needed impedance.

The AD series products for antennas have standard ED (electrodeposited), and ED reverse treated copper foils. They offer enough options to help in reducing antenna PIM and circuit losses. The PIM values of ED reverse treated copper foils are -163 dbc at 60 and -159 dbc at 30 mil thickness. These are values obtained from extensive PIM testing at 1900 MHz. The testing uses a 2-tone reflective method using a 50Ω vehicle microstrip test. 

The AD antenna series products have different thicknesses. For example, the AD255C laminates range from 10 mils to 250 mils. Therefore, you need to seek help from customer service when selecting the suitable material.

PTFE composite-based products AD series materials have a lower loss (0.002 or less at 10GHz). In addition, they have little moisture absorption (0.1% or less) and high-strength copper steel of more than 10 pli. Therefore, the AD series laminates the best option for antenna use. 

Rogers AD255C laminate material description

AD255C laminates combine superior thermal characteristics of fluoropolymer resin with selected fiberglass reinforcement. They also combine with ceramic filters. They produce laminated products that have reduced PIM (passive intermodulation). The produced products have minor thermal expansion features. The Rogers AD255C laminates have PTFE stability over many temperatures and frequency ranges. It makes them ideal for RF and microwave use in the telecommunication industry.

Micro-dispersed ceramic gives thermal stability to laminates in the form of low CTE values. It also gives in the form of great phase stability at all temperatures. 

The guidelines developed give fabricators basic information on producing multi-layer and double-sided boards. It’s done using copper-clad, and PTFE reinforced materials. 

Rogers AD255C laminate storage 

You can store these laminates in ambient conditions. The recommended inventory system for record-keeping is FIFO (first in, first out). It permits tracking of the material numbers. 

Storing Rogers AD255C laminate in shipping cartons

Store the cartons on flat surfaces safely. They should be free from moving equipment and mobile handling. You can store the cartons on their sides if you don’t stack anything on top. 

You can stack up to five cartons high to limit the weight of cartons at the bottom. 

Storing Rogers AD255C laminate removed from cartons

The copper surfaces of the laminates can have discoloration. It’s because of oxidation that can happen in the storage. You can remove the oxidation by Microtech (chemical exposures) standard to PCB fabrication methods. 

Panels exceeding 20 mils in thickness, store them on edge slotted shelving. It provides easy access with reduced metal surface damage. 

If your storage facilities don’t allow vertical stocking:

  • Shelves should be smooth, clean, and flat
  • The shelf should extend past the area where you will store the panels.
  • Free the surface from all debris
  • Keep the shelf loads below 50 pounds per square foot
  • Interleave the panels with nonabrasive soft separator sheets

Handling of Rogers AD255C laminate

All PTFE materials are soft than many rigid printed laminates for wiring boards. As a result, they are susceptible to handling damage. It’s easy for a core clad that only has copper foils to get creased. The materials prone to dents, pits, and scratches are bonded by brass, copper, or aluminum plates. You need to uphold reasonable handling procedures. 

Rogers AD255C laminate applications

Antenna system

Rodgers provides unique antenna-grade laminates that meet all challenges faced by designers. In addition, they meet antenna designer needs for antenna systems in the military and more advanced systems for automotive radars.

The antenna systems have consistent and high-reliability performance. They have slight circuit losses at higher frequencies. They provide different dielectric products for:

  • Feed networks
  • Antennas
  • Radiating elements
  • Phased arrays

Types of antenna systems

Patch antennas

Phased array

Conformal antennas

AESA (active electronically scanned array)

Antennas

Low PIM advanced AD255C laminates enable good RF antenna performance and design. The 4G LTE and 3G mobile networks use different antenna technologies. They use them in building linkages between fixed stations and mobile users. You need high-performance antennas to operate the Internet of things (IoT). You also need the performance for both mobile wireless and fixed communications. The growth in technology and system needs permits printed circuits to offer high grain and low loss at microwave frequencies. 

Carrier-grade wi-fi and LAA devices

They are innovative material circuits that meet new and higher standards that surpass the standard FR-4 abilities. With the rise in wireless data demands, you need higher mobile network performance and capacity levels. The wireless carrier-grade solution observes the standards to meet the high reliability and performance needs. 

Communication systems

They are innovative AD255C laminate materials that enable better performance communication systems. Examples of these systems used in communications are power amplifiers, digital communication control circuitry, and reduced noise amplifiers. 

Infotainment and telematics

They are high-frequency AD255C laminates reliable for onboard antenna systems. The current enhanced connectivity and intelligence make automotive telematics and infotainment application systems complex. They offer two-way communication that receives, stores, and sends data. 

Conclusion

Get customer service help in choosing a suitable AD255C laminate material. However, the technological advancements make it a challenge to choose on your own.