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General specification for HDI in Cojoin
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Layer Count
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4 – 22 layers standard, 30 layers advanced
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Board thickness
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0.4-3.2mm
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Laminate type
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FR4 standard, FR4 high performance, Halogen free FR4, Rogers，Isola
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Finished Copper weight
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18-70um
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HDI builds
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1+N+1, 2+N+2, 3+N+3,4+N+4
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Max panel size
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610*450MM
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Min trace width/spacing
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3/3mil(0.075/0.075mm)
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Minimum mechanical drill
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0.15mm
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Min laser size
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0.10mm standard, 0.075mm advanced
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Surface treatment
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OSP, ENIG, Immersion tin, Immersion silver, Electrolytic gold, Gold fingers
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