Ngwaọrụ a dabara adaba maka ịkpụ-osisi nke PCB mgbe nkwụnye arụ ọrụ;
Jiri maka ịcha Ikanam ìhè ibe, adabara LED ibe na a obosara ≥ 8mm na a ọkpụrụkpụ nke 0.6mm-3.5mm na a V-groove.