Board type: high frequency high speed board
Layers of plate: 4 layers
Board thickness: 1.6mm
Surface treatment: immersion gold
The dielectric constant is 3.48
Material: Rogers Ro4350B
Advantages:
1. Low directionality
2. Low DK fluctuation with temperature
3. Low coefficient of thermal expansion in the Z-axis
4. Low coefficient of internal expansion
5. Low DK tolerance
6. Stable electrical characteristics at different frequencies
7. FR4 is easy to mass-produce and multi-layer mixing, cost-effective
