As is well known, when evaluating SMT processing costs, SMT surface mount processing factories usually calculate the number of points first, and then multiply it by the processing unit price to get the SMT processing cost. The specific calculation steps are as follows:
l Clarify the complete process of SMT patching
Loading - Printing solder paste - SMT components - Visual inspection -
Reflow soldering - Ultrasonic board cleaning - Cutting board - Appearance inspection - Packaging (some products require IC programming and PCBA function testing)
l Calculate the number of points for surface mount components
SMT surface mount processing fees are generally calculated based on the number of component points. Surface mount resistors, capacitors, and diodes are counted as one point per component, one transistor is counted as 1.5 points, and the four pins of an IC are counted as one point. All surface mount points on the board are counted through the BOM list.
l Calculate the cost of surface mount processing
SMT surface mount processing fee=number of points * unit price of one point (the processing fee includes the cost of auxiliary materials such as red glue, solder paste, and board washing water).
l Other expenses
PCBA testing racks, steel mesh, and other fees agreed upon between the customer and the manufacturer shall be calculated separately.
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