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By certification 
Shenzhen Hejin Circuit Co.,Ltd is a leading pcb with gold fingers exporter, and one of the leading China pcb with gold fingers manufacturers, producers and suppliers. We export high quality products, and we are professional at pcb with gold fingers assembly and oem.
Board Thickness:1.6MM
Copper Thickness:70UM
Base Material:FR4
Surface Finishing:Immersion gold
Solder Mask Color:Green
(Hole Size) |
(Drilling hole size) |
0.6-6.0 mm |
(FG hole size) |
0.6-6.0 mm |
|
(Hole tolerance) |
±0.075 mm |
|
(Tolerance of hole position) |
±0.1mm |
|
(Aspect ratio) |
5:01 |
|
(Solder) |
(Min solder bridge) |
4 mil |
(Dimension) |
(Tolerance of outline dimension) |
(Length): 1200mm |
(Max board size) |
(Width): 300mm |
|
(Impedance) |
(Impedance tolerance) |
±10% |
(Heat conductivity) |
(Low heat conductivity) |
1.0-1.5W/m*k |
(Wid heat conductivity) |
1.5-1.8W/m*k |
|
(High heat conductivity) |
2.0-3.0W/m*k |
|
(Peel strength) |
≥1.8 N/mm |
|
(Surface resistance) |
≥1*105m |
|
(Volume resistrivity) |
≥1*106m |
|
(Breakdown voltage) |
≥2KV/mm |
|
(The solder resistance) |
(260℃,10min,no delamination no blister) |
|
(Dielectric constant) |
≤ 4.4 |
|
(Dielectric power factor) |
≤0.03 |
|
