4Layer FR4 PCB Board 1.6mm TG130 Immersion Gold Finish

• Number of layers: 4 layers
• Material: FR-4
• Finished product thickness: 1.55mm
• Finished copper foil thickness: 35UM
• Surface treatment: Immersion gold
• Minimum aperture: 0.2MM
• Minimum line width and distance: 0.144MM/0.082MM

FR-4 is a common material for printed circuit boards (PCBs). A thin layer of copper foil is typically laminated to one or both sides of an FR-4 glass epoxy panel. These copper clad laminates are widely used in various electronic applications.

FR4 PCBs demonstrate excellent thermal stability with these key properties:

• Glass Transition Temperature (Tg): 130-180°C range maintains mechanical properties at elevated temperatures
• Coefficient of Thermal Expansion (CTE): 12-18 ppm/°C minimizes stress during thermal cycling
• Thermal Conductivity: Adequate for most applications with optional thermal management solutions
• Process Compatibility: Withstands standard soldering and reflow processes

FR4 PCBs offer an optimal combination of properties for demanding applications:

• Excellent dimensional stability across temperature ranges
• High mechanical strength and durability
• Resistance to moisture and chemicals
• Flame retardant properties for enhanced safety
• Low electrical conductivity between traces

These characteristics make FR4 PCBs ideal for consumer electronics, telecommunications, automotive systems, and industrial equipment applications.