Creating a comprehensive PCB assembly drawing is essential to ensure a smooth and error-free manufacturing process. Including the right details can make a huge difference in the quality and efficiency of assembly. We made this checklist of key items that every designer should include in their assembly drawings to avoid any hiccups during production.
Here are 10 things we recommend you include in your PCB assembly drawing:
- Component reference designators and polarity
- Global and local fiducials for automated assembly processes
- Pin 1 for ICs, connectors, and other relevant components
- Soldering method (wave/manual/pin-in-paste) and pad dimensions
- Details on where solder mask and paste mask layers should be applied
- Conformal coating requirements
- Instructions for post-assembly AXI and AOI
- Height restrictions and mechanical constraints for components
- Mounting hole locations, cutouts, and other mechanical features
- Unique handling needs for critical components such as ESDs, heatsinks, and connectors
