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Design for Assembly Handbook


Our DFA Handbook outlines a reliable system to help you reduce cost and speed up the production of your prototype PCBs.

8 Chapters
6 CHAPTERS
8 Chapters
50 PAGES
Timer
70 MINUTE READ

Design choices go a long way in ensuring the quality and reliability of the end product. The Design for Assembly Handbook helps you avoid assembly delays and extra costs by checking:

  • The manufacturer’s requirements to assemble your PCB
  • Common DFA issues
  • Common PCB assembly defects
  • Factors that impact the cost of the PCBA

 

What is DFA?

 

DFA techniques are intended to arrive at a simpler product structure and assembly system.

Design for assembly includes a distinct design methodology that considers product functionality along with the cost and efficiency of the product assembly process.

 

The objectives of design for assembly

 

  1. The components selected in the BOM are available.
    1. DFA checks to ensure components are neither obsolete nor near end-of-life.
  2. The components’ manufacturing part numbers (MPN) must match with the footprint of the PCB.
  3. The component placement, sizes, and distances between the components are compatible with the assembly and manufacturing processes.
  4. The solder mask and solder paste layers are correct and meet the production requirements.
  5. The DNI (do not include) components are correctly marked and verified.

 

Also inside this Design for Assembly Handbook:

 

  • Recommended layout for components
  • Common PCB assembly defects
  • Factors that impact the cost of the PCB assembly, including:
    • Component packages
    • Board assembly volumes
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Sierra Circuits PCB Certifications & Registrations

Sierra Circuits holds IPC-6012, IPC-6013, IPC-6015, IPC-6018, and IPC-A-600 PCB certifications
Sierra Circuits is ISO 9001:2015 certified for Military and Aerospace PCBs
Sierra Circuits is ISO 13485:2016 certified for Medical Device PCBs
Sierra Circuits is ITAR Registered
Sierra Circuits holds MIL-PRF-55110 & MIL-PRF-31032 PCB certifications
Sierra Circuits is certified by the National Institute of Standards and Technology
Sierra Circuits is REACH Compliant for PCB certifications
Sierra Circuits is RoHS Compliant for PCB certifications
Sierra Circuits holds PCB certifications for Flex, Rigid-Flex, and Rigid PCBs by the Underwriters Laboratory
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Sierra Circuits has been trusted by innovators as a go to resource for best in class circuit boards since 1986.

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About Sierra Circuits

Since 1986, Sierra Circuits has faithfully served more than 20,000 PCB designers and engineers with PCB design, manufacturing and assembly and High-Density Interconnect technology.

Sierra Circuits handles all aspects of PCB production. From PCB layout and design, to assembly and manufacturing—we provide our customers with unprecedented quality, reliability, and a single point of support.

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