3W PCB for 3 LEDs with countersinks 1L, TCP-1000, 1.5mm, 35um, White solder ... 4, Metal base, Rogers...3Board thickness8~126 mil (0.2~6.0mm)4Copper foil0.5oz, 1oz, 2oz, 3oz, 4oz, 5oz ... drill size(finished)8mil (0.2mm)7Hole diameter tolerancePTH: ±3 mil, NPTH: ±2mil8Hole location tolerance±2mil9PTH wall thickness≥20um10Aspect ratio10 ... mm26Thermal Shock3 x 10Sec@288ºC 3W PCB for 3 LEDs with countersinks