3W PCB for 3 LEDs with countersinks 1L, TCP-1000, 1.5mm, 35um, White solder mask, ... "6Min. drill size(finished)8mil (0.2mm)7Hole diameter tolerancePTH: ±3 mil, NPTH: ±2mil8Hole location tolerance±2mil9PTH wall thickness≥20um10Aspect ratio10 ... .4N/mm26Thermal Shock3 x 10Sec@288ºC 3W PCB for 3 LEDs with countersinks