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Fr4 Pcb Circuit Board Assembly

Fr4 Pcb Circuit Board Assembly is widely used as a PCB base material among electrical engineers and designers. The low cost and versatility of the material and its rich beneficial physical properties are the reasons for this popularity.

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Fr4 Pcb Circuit Board Assembly

fr4 pcb circuit board assembly services

pcb assembly.jpg

Specification:

AticleDescriptionCapability
MaterialLaminate materialFR4, Alu, CEM3,Taconic,Rogers
Board cuttingNumber of layers1-58

Min.Thickness for inner layers 

(Cu thickness are excluded)

0.003"(0.07mm)
Board thicknessStandard0.04-0.16''±10%(0.1-4mm±10%)
MinSingle/Double layer:0.008±0.004''
Bow and twist<7/1000
Copper weightouter Cu weight 0.5-4 oz
inner Cu weight 0.5-3 oz
Drilling
Min size0.0078''(0.2mm)
Drill deviation±0.002''(0.05mm)
PTH hole tolerance±0.002''(0.005mm)
NPTH Hole tolerance±0.002''(0.005mm)
PlatingMin hole size
0.0008''(0.02mm)
Aspect ratio20(5 :1)
Solder maskColorGreen,white,black,red,yellow,blue
Min solder mask clearance0.003''(0.07mm)
Thickness0.0005-0.0007''(0.012-0.017mm)
SilkscreenColor Green,white,black,red,blue....
Min size0.006''(0.15mm)
E-testFlying probe testerY


Description:

FR4, also written as FR-4, is both a name and a rating. This name applies to glass fiber reinforced epoxy laminates used in the manufacture of printed circuit boards. However, the name can also be used as a rating for evaluating epoxy laminates. This name basically indicates the basic quality of the laminate, which means that the various panels and designs are of the FR4 rating. The "FR" in the name represents a flame retardant, and 4 represents other materials in the same product.


The material widely known as FR4 is a composite structure. The most basic material layer is a glass fiber woven into a thin cloth-like sheet. Glass fibers impart the necessary structural stability to FR4. The innermost layer of glass fibers is then surrounded and bonded by a flame retardant epoxy resin. This resin imparts rigidity to the material as well as other physical properties.


Fr4 Pcb Circuit Board Assembly is widely used as a PCB base material among electrical engineers and designers. The low cost and versatility of the material and its rich beneficial physical properties are the reasons for this popularity. The FR4 board is an electrical insulator with high dielectric strength. They also have high strength to weight ratio, light weight and moisture resistance. Coupled with their relative temperature resistance, FR4 works well under most environmental conditions.

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