Matunhu edunhu uye thermal pad pane substrate yakaparadzaniswa, uye iyo yekudziya base yezvinopisa zvinosangana zvakananga neinopisa-inoitisa svikiro kuti iwane iyo optimal thermal conductive (zero thermal resistance) mhedzisiro.Izvo zvinhu zve substrate kazhinji isimbi (Copper) substrate.