Hemeixin Electronics Co.,Ltd.
Alumina PCB (Al2O3 PCB) is widely used because of its low cost. It is, however, a less good thermal conductor (24-28 W/mK) but still outperforms most IMS (metal core) PCB since it does not require a dielectric layer between circuits and core. If needed, thermal performance can be still enhanced using silver (Ag) filled vias.
HemeixinPCB has created the option of checking the required impedance on the customer's Circuit Board, so as to modify the circuit board, or the tracks and the layer structure if necessary. The impedance is largely determined by the track geometry, the structure of the layers and the dielectric constant (Er) of the materials used.
After making the circuit board, the impedances are checked and recorded. The results of the measurements are available on request at any time.