What is RO4350B?

RO4350B laminate refers to Rogers RO4350B material, which is a proprietary glass cloth reinforced, ceramic/hydrocarbon composite material and has the electrical properties of PTFE/glass cloth.Performance and processing of epoxy resin/glass. The dielectric constant (Dk) of RO4350B laminate has strict tolerance control and low loss characteristics. It is processing. The method is the same as that of standard epoxy resin/glass. RO4350B laminate does not need special through-hole treatment or operation process like PTFE material, and the processing cost is also. It is far lower than traditional microwave laminate. The material reaches UL 94 V-0 flame retardant grade and is suitable for active devices and high-power RF design. The characteristic of RO4350B is Dk 3.48+/- 0.05; Df 0.0037; The Z-axis thermal expansion coefficient is 32 ppm/° C. The advantage of RO4350B is that the processing technology and FR-4 is similar, with lower cost, high cost performance, and excellent dimensional stability.


Rogers RO4350B is a hydrocarbon/ceramic laminate with a dielectric constant of 3.48. It meets the requirements of commercial equipment manufacturers for printed circuit boards. It has the following advantages:
1. Low RF loss.
2. Low dielectric constant fluctuation with temperature.
3. Low Z-axis thermal expansion coefficient.
4. Expansion coefficient in low plate.
5. Low permittivity tolerance.
6. Stable electrical characteristics at different frequencies.
7. It is easy to mass produce an FR4 multi-layer mixed press, with high-cost performance.


Applications: cellular base station antenna and power amplifier, microwave point-to-point connection (P2P), car radar and sensor, radio frequency identification (RFID) for direct broadcast satellite.


What is the thickness of RO4350B?

Dielectric constant: Er=3.48 0.004 (0.101 mm), 0.066(0.168 mm), 0.010 inches (0.254 mm), 0.0133 inches (0.338 mm)
, 0.0166 inches (0.422 mm), 0.020 inches (0.508 mm), 0.030 inches (0.762 mm), 0.060 inches (1.524 mm) 12 inch × 18 inches( 305 × 457mm)24× 18(610 × 457mm)24 × 36(610 × 915mm)48× 36(1.224m × 457mm) thickness 0.004 o z applicable. Electroplated copper thickness 1/2 ounce (17 μ m), 1 ounce (35 μ m), 2 ounces (70 μ m).  Typical applications include cellular base station antenna and power amplifier,microwave point-to-point connection (P2P), automotive radar and sensors, radio frequency identification (RFID) tags, and high-frequency head (LNB) for direct broadcast satellite.


RO4350B, it is a patented hydrocarbon resin system/ceramic filler material reinforced with woven glass cloth, and its electrical properties are very close to PTFE/woven glass. The machinability of glass cloth is similar to that of epoxy resin/glass cloth.


RO4350B can adopt the standard processing technology of epoxy resin/glass cloth, and at the same time.The permittivity and loss are strictly controlled, but the price is a fraction of that of traditional microwave materials. It doesn’t even need to be carried out like PTFE-based microwave materials special through-hole pretreatment or operation procedures. RO4350B material has passed UL 94V-0 fire rating necessary for active equipment and high-voltage RF design.