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Rogers RO4835 High Frequency PCB
Minimum Line Width : 3MIL ;
Minimum Line Spacing : 3MIL ;
Drilling Diameter : ≥ 0.1mm ;
Processing Size : 600 * 1200mm;
Plate Thickness : 0.1-10mm ;
Processing Layers : 2-36 layers;
Special Process : Thick gold plate, ultra thick plate, depth control drilling, back drilling, hole filling electroplating, copper slurry plug hole, mechanical blind hole, etc.
Surface Treatment Processes : Include OSP, gold precipitation, silver precipitation, tin precipitation, gold plating, pure gold plating, thick gold plating, nickel palladium gold plating, nickel plating, tin plating, tin spraying, etc.
RO4835™ laminates are suitable for applications requiring higher stability at elevated temperatures and greater resistance to oxidation than standard RF thermosets.
Oxidation affects all thermoset laminates, including FR-4 laminates, over time and with temperature changes. Over the long term, oxidation causes a small increase in the dielectric constant and loss factor of the circuit sheet. The rate of change and impact on circuit performance depends on the specific design and operating temperature. For applications requiring greater stability at elevated temperatures, Rogers has successfully developed Ro4835 TM circuit sheet, which can be more stable in high temperature environments, with substantially higher oxidation resistance relative to other RF thermosets, in addition, the electrical and mechanical properties of Ro4835 material are virtually identical to those of the sheet that has been used successfully by our customers for many years.
RO4835T™ laminate is a ceramic-filled, low-loss thermoset material using a special open-fiber glass cloth available in 2.5 mil, 3 mil and 4 mil thicknesses with a dielectric constant (Dk) of 3.3. Designed for use in the inner layers of multilayer board structures, it is an excellent complement to the RO4835™ material, which needs to be thinner.
Ro4835T laminate has the same oxidation resistance as Ro4835 laminate, and boasts ultra-low loss, excellent dielectric constant tolerance control, and tight thickness control to provide excellent and stable wireless performance for circuits. In addition, its high-performance material properties make it extremely cost-effective and stable.
To enable applications that meet UL 94V-0 requirements, Ro4835 laminates utilize flame retardant technology that is RoHS compliant. These materials meet the requirements of IPC-4103.
Key Benefits
a, 10 times higher oxidation resistance compared to traditional thermoset materials;
b, Excellent electrical properties enable to meet higher operating frequency applications;
c, No bubbles or delamination;
d, Reliable plating of through holes;
e, Stable over the entire circuit processing temperature range.
Typical Applications
a, Automotive radar and sensors;
b, Point to point microwave transmission;
c, Amplifiers;
d, Phased array radar;
e, Radio frequency components.
