Process Flow:

Surface mount boards processed by reflow soldering have a complex process, which can be divided into two types: single-sided mounting and double-sided mounting.

Single-Sided Mounting: Pre-coated Solder Paste → SMT (Manual and Automatic Mounting) → Reflow Soldering → Inspection and Electrical Testing.

Double-Sided Assembly: A-Side Pre-Solder Paste → SMT (manual and automated) → Reflow Soldering → B-Side Pre-Solder Paste → SMT (manual and automated) → Reflow Soldering → Inspection and Electrical Testing.