Overview

Design for Manufacturability (DFM) is not just a checklist; it is a philosophy of engineering that ensures your design is compatible with factory realities.

1. Insufficient Solder Mask Dam

When pads are placed too close together, the solder mask 'dam' between them becomes too thin to adhere correctly. This leads to solder bridging during assembly. Always aim for a minimum of 4 mil mask dams.

2. Acid Traps

Traces that meet at acute angles can trap chemicals during the etching process, leading to 'over-etching' and potential open circuits. Ensure all trace intersections are 90 degrees or 135 degrees.

3. Thermal Reliefs

Large ground planes can act as heat sinks during soldering. If a pad is connected directly to a plane without thermal relief, it may lead to 'cold' solder joints or tombstoning of small components.

Conclusion

A high-quality DFM review is the cheapest insurance policy you can buy for your hardware project.

**Catch errors early.** [Upload your RFQ](#) for an engineering-led DFM check.