Webinar: What Your CM Wishes You Knew About Design for Assembly
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March 11th, 2026 | 9 AM PT
COST: FREE
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6
Days
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5
Hours
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27
Minutes
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18
Seconds
Vandana CC
Engineering Project Coordinator at Sierra Circuits
This webinar will be hosted on Zoom.
Following this event, you will receive:
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Slides
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Recording
Webinar abstract:
When sending design files to your PCB manufacturer and assembler, you often prioritize stack-up details, solder mask, and silkscreen layers, but overlook critical assembly information such as component orientation, spacing requirements, and special assembly constraints.
Your CM requires a comprehensive data package, including a centroid file, an accurate BOM, panelization requirements, and detailed assembly drawings to minimize ambiguity and streamline assembly and production.
In this webinar, you’ll learn to create a reliable PCBA by avoiding PCB design for assembly mistakes.
Practical DFA guidelines to reduce assembly delays
You can be more transparent with your assembly partner by including precise pick-and-place files with XY coordinates and rotation specs.
Equally important is a flawless BOM. Keep your bill of materials concise, with correct MPNs, quantities, and vendor details. Verify that no components are obsolete, and define alternatives if required.
In your assembly drawing, clearly show component locations, pin 1, and polarity markings. Call out special handling instructions for ESD devices, heatsinks, and press-fit connectors. You must perform a final design file review before sending data to your CM to avert misplacements and expensive respins.
Your component placement strategy directly affects the assembly yield. Make sure the component dimensions in your footprint align with the datasheets. Analyze voltage and current levels and group circuits that share similar VCC and GND connections. Keep 50 to 75 mil part clearance from board edges to lower the risk of damage during depanelization. In addition, pay attention to part-to-hole spacing. Maintain at least 8 mil clearance between components and adjacent holes to prevent unintended shorts.
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Consider thermal behavior during assembly. Identify potential hotspots early in the design phase and incorporate heatsinks, thermal vias, and appropriate thermal relief connections for efficient heat dissipation. Provide sufficient spacing around high-power components to prevent localized overheating.
Join this webinar to identify the typical PCB design for assembly mistakes and learn to design with confidence.
Webinar agenda:
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What your CM evaluates first: assembly drawings, centroid, and BOM
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The most common DFA gaps that cause NPI delays
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How to structure a perfect assembly data package
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A practical DFA checklist to reduce back-and-forth communication with your CM
About Vandana CC
With a strong foundation in physics, Vandana CC brings a deep technical understanding to her work in PCB design and electronics manufacturing. She holds a Master’s in Physics and has experience teaching before transitioning into research at the Indian Institute of Science.
At Sierra Circuits, Vandana has played a key role in R&D projects, contributing to the development of engineering tools and calculators, technical content creation, and customer demos. Currently, she focuses on project coordination, ensuring seamless collaboration both within the team and with external partners. Her expertise bridges the gap between technical innovation and practical application, making her an integral part of Sierra Circuits’ engineering efforts.
