The following factors are mainly considered when packaging the carrier tape:

first, the ratio of chip area to packaging area is as close as possible to 1:1 in order to improve the packaging efficiency; 

2、 The pins shall be as short as possible to reduce delay, and the distance between pins shall be as far as possible to ensure no interference and improve performance; 

3、 Based on the requirements of heat dissipation, the thinner the package, the better