The most software we used for PCB layout is Cadence Allegro which is a layout software for professional development of printed circuit boards and complete electronic systems with more powerful features than Altium files in high-speed PCB design.

However, some of our engineers can use Altium designer for some customer’s demand.

The final PCB layout package files that Weller will provide:
_asm file:            This is for mechanical file for assembly reference
_cam file:            This PCB Gerber file for PCB fabrication reference
_dxf file:              This is Structure drawing,for mechanical reference
_pcb file:             This is final PCB file generated from Cadence Allegro, for the usage of modification of the PCB diagram or the debugging of circuit diagram
_smd file:            This is the paste file for PCB assembly house usage
.PCBDOC file:     This is the altium design software file only for PCB designer reference