The dielectric constant (Dk) of RO4350B laminated board has strict tolerance control and low loss characteristics, and its processing method is the same as that of standard epoxy resin/glass. RO4350B laminated board does not require special through-hole treatment or operating procedures like PTFE material, and the processing cost is much lower than traditional microwave laminated board. The material meets UL 94 V-0 flame retardant rating and is suitable for active devices and high-power RF designs.
What is Rogers 4350B?
Rogers 4350B is a ceramic laminate specifically designed for high frequencies and hydrocarbons. It is produced by Rogers Corporation and has electrical characteristics, mechanical durability, and processing compatibility suitable for RF, microwave, and millimeter wave circuit applications.
In order for laminated boards to be suitable for such high-frequency applications, they must possess low dielectric constant (Dk) stability, low loss factor (Df), thermal and mechanical stability, as well as thermal and mechanical stability. This design helps reduce signal delay and prevents ultra wideband systems from operating uniformly over a wide frequency range. It provides a circuit design that ensures minimal signal loss even at higher frequencies. To cope with potential thermal stress and other environmental factors that may be prevalent without compromising the operational performance of the components. Following the traditional PCB manufacturing process is a convenient factor for cost and large-scale production.
The main purpose of Rogers 4350B
Due to its low Dk and Df values, Rogers 4350B is commonly used in base station antennas, satellite links, and 5G applications, with negligible signal loss. It can also be applied in aerospace and defense automotive radar, advanced driver assistance systems (ADAS) millimeter wave applications, power amplifiers, high-speed digital circuits, and other applications. RO4350B has excellent processability, low loss, multi-layer capability, and strong thermal and mechanical properties, making it very suitable for complex PCB components. Its versatility quickly makes it widely used in various fields, especially in cellular infrastructure where performance and manufacturability are equally crucial.
Characteristics of Rogers 4350B
Dielectric constant (Dk): The Dk of Rogers 4350B is 3.48 (at 10 GHz), however, this value is quite low and almost the same across all frequency ranges.
Due to the high-speed transmission capability of low Dk signals, they are suitable for use in high-frequency circuits.
Dk has excellent stability over a wide range of surface temperatures and frequencies, ensuring good equipment performance even in harsh environments.
Dispersion factor (Df): The dissipation factor of Rogers 4350B at 0.0037GHz is 10. However, its Df is relatively low, making it very suitable for situations that require long-distance signal transmission, such as mica waves and RF circuits.
Dielectric constant thermal coefficient (TCDk): Rogers 4350B has a low TCDk of+50 ppm/° C, and its dielectric constant remains stable with temperature changes.
Rogers RO4350B laminated board is a proprietary textile glass cloth reinforced ceramic filling material/hydrocarbon composite material that combines the electrical properties of PTFE/glass cloth materials with the processability of epoxy resin/glass cloth.
The dielectric constant (Dk: 3.48+/-0.05) of RO4350B high-frequency board has strict tolerance control and low loss characteristics (Df: 0.0037@10GHz ）Easy to mass produce CAF impedance (resistant to ion migration), RO4350B processing technology can be the same as standard epoxy resin/glass cloth.
The RO4350B high-frequency board is fully compatible with traditional PCB manufacturing technology and does not require special pre-treatment for through-hole copper plating (PTFE board requires plasma treatment) or other pre-treatment processes. The solder mask process can also be ground. Compared to traditional microwave material laminates, the price is lower, so it is widely used in active devices and high-power RF designs that require a fire rating of UL 94V-0.
The Rogers RO4350B high-frequency board is fully compatible with traditional PCB manufacturing technology and does not require special pre-treatment for through-hole copper plating (PTFE boar d requires plasma treatment) or other pre-treatment processes. The solder mask process can also be ground. Compared to traditional microwave material laminates, the price is lower, so it is widely used in active devices and high-power RF designs that require a fire rating of UL 94V-0. The dielectric constant (Dk: 3.48+/-0.05) of Rogers RO4350B high-frequency sheet has strict tolerance control and low loss characteristics (Df: 0.0037@10GHz ）Easy to mass produce CAF impedance (resistant to ion migration), RO4350B processing technology can be the same as standard epoxy resin/glass cloth.