4 Layer 3D Rigid Multilayer PCB Board with White Silkscreen

Flexible PCB (FPC): Can be bent and flexed during use.

Rigid PCB: Maintains fixed shape and cannot bend.

• High frequency material (most expensive)
• FR-1 - Phenolic tissue paper (electric wood)
• FR-2 - Phenolic tissue paper
• FR-3 - Cotton paper with epoxy resin
• FR-4 - Glass cloth with epoxy resin (most common)
• FR-5 - Glass cloth with epoxy resin
• FR-6 - Matte glass with polyester
• G-10 - Glass cloth with epoxy resin
• CEM-1 to CEM-5 - Various composite materials
• AIN - Aluminum nitride
• SiC - Silicon carbide

Common rigid PCB metal coatings include:

• Copper (5-15μm thickness)
• Tin (5-25μm thickness, ~63% tin content)
• Gold (typically for interfaces only)
• Silver (typically for interfaces or silver alloy)

• Standard Multilayer PCB: 4-8 layers for general electronics
• HDI PCB: High density with microvias for compact devices
• Flex/Rigid-Flex PCB: Combines flexible and rigid sections
• Sequential Lamination PCB: For complex designs with 10+ layers
• Metal Core PCB: Aluminum/copper core for heat dissipation
• RF/Microwave PCB: Specialized for high-frequency applications