Double-sided PCBs are mainly produced on FR4 material. FR4 is a copper-clad, woven glass-reinforced material with epoxy-based resin. The epoxy resin bonds the materials together and contains flame retardants.
Double sided PCBs and Multilayer PCBs contain plated through holes enabling signals to cross through the layers. It makes higher component density possible compared with single-sided technology. It is a well-known technology used in all kinds of electronic devices.
Doubler sided PCB containing both signal and ground plane layers enable better signal integrity since traces can be impedance controlled with reference in ground plane layers.
FR4 is the most cost-effective PCB material for Double sided PCB on the market.
Allow a reduction of 50% of the size of the board compared to a single-sided PCB
FR4 is glass-reinforced epoxy laminate. The designation FR4 was created by NEMA in 1968 (National Electrical Manufacturers Association). FR is the short form of Flame Retardant. FR4 is offered in many variations with modification of the epoxy to create lower CTE, higher Tg., higher CTI, lower Df & Dk etc…
PCB Materials:Tg. 130 to 180C°, CTE 40/220 to 60/300ppm, halogen free optionally.
Copper Weight: 1 oz/ft² minimum
Lines and Spaces: low cost 150um, standard 100um, advanced 75um
Vias: Standard 0,3mm, min. 0,15mm
Layer Count: 2-64 layers.
Surface Finish: LF HASL, OSP, Im Tin, Im Silver, ENIG, ENEPIG and Hard or Soft Gold.
Solder Mask: Green, White, Black, Blue, Red, Yellow.
Double sided PCBs are commonly used in a wide range of electronic applications such as telecommunications, industrial control systems, and power supplies. They are also used in prototyping and small-scale production runs.
