FR-1 Single Layer White Led PCB BoardSpecification:1)Electronic Circuit PCB Board2)Certificate: UL,SGS,RoHS,ISO/TS16949,ISO14001:20043)Base Material: High TG FR-4/FR-4/Lead Free Material(ROHS Compliant)/CEM-3/CEM-1/FR-14)Solder Mask: Green/Red/Yellow/Blue
HDI: HDI (High Density Intrerconnection) is defined as substrate or board with the Microvia of aperture below 6mil, hole pad below 0.25mm, connect pad density above 130 points / square inch , wiring density above 117 inches / square inch and line width /
10 Layers HDI Board (3+4+3)Substrate or board with the Microvia of aperture below 6mil, Hole pad below 0.25mm,Connect pad density above 130 points / square inch, Wiring density above 117 inches / square inch, Line width / spacing below 3mil/3mil, Mainly u