In this episode, we continue our conversation from last episode with  Dave Wilcox, PCB CAM engineer at CircuitHub, to explore the intricacies of plugging and filling vias.

Topics Covered:

• The differences between plugging and filling vias, and when to use each method.
• The common challenges faced during the reflow process, including the infamous "popcorn effect" caused by trapped flux.
• Practical advice on preventing manufacturing issues related to via plugging.
• Cost considerations between tenting, plugging, and filling vias.
• Insights into using various materials for via filling, including epoxy and solder.
• A fascinating case study on using solder to plug vias for gas sensors.
• The importance of thoughtful PCB design and silkscreen placement to avoid manufacturing headaches.

Key Takeaways:

• Plugging vias can prevent air and flux entrapment, but must be carefully specified in the design.
• There’s a delicate balance between cost and functionality when choosing how to handle vias.
• Thoughtful design and clear communication with manufacturers can lead to smoother production and better results.

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In this episode, Chris and Melissa we are focused on the topic of tenting vias. Joined by our favorite PCB guru, Dave Wilcox, we dive into the thrilling question: is it "via" or "v-eye-a"?  We discuss the technical details behind different types of vias, tenting methods, and the potential manufacturing challenges that arise from improper designs such as why covering one side of a via might just lead to a tiny PCB firework show. Make sure to look out for part 2 of this episode where we continue on to learn about plugging and filling vias. 

Reference Links

https://resources.altium.com/p/IPC-vias

https://www.wellpcb.com/blog/pcb-manufacturing/non-conductive/

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In this episode, Chris and Melissa continue their conversation with Kenny McGee, founder of Component Sense. We explore the environmental impact of electronics manufacturing and discuss how companies like Component Sense work to redistribute unused parts, reducing waste in the industry. Kenny shares insights on sustainability challenges for small businesses, his personal passion for reducing waste, and the global issues around recycling and electronic component reuse. 

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In this episode Chris and Melissa sit down with Kenny McGee, founder of Component Sense, to dive into the intricacies of the electronics supply chain. Kenny shares his journey from working in electronics manufacturing to founding Component Sense, a company focused on capital recovery from excess inventory while promoting sustainability. Tune in to learn about the environmental impact of excess electronic components, the importance of redistributing stock, and the challenges of reducing waste in the industry.

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In this episode of the PickPlace Podcast, Chris and Melissa discuss the challenges and intricacies of working with RGB LEDs, specifically the popular surface-mount DotStar LEDs from Adafruit. They dive into issues like handling cut strips versus continuous reels, the importance of sourcing directly from original manufacturers, and the need for moisture control when using these components in manufacturing. They also provide practical tips for engineers on cost-saving and quality assurance strategies when sourcing these parts for large-scale production.

Show Links:
https://www.adafruit.com/product/2343

https://www.lcsc.com/product-detail/RGB-LEDs-Built-in-IC_OPSCO-Optoelectronics-SK9822-A_C5378730.html

https://docs.circuithub.com/en/articles/3350195-consigning-cut-strips

https://www.digikey.com/en/products/detail/adafruit-industries-llc/2343/5761204

http://www.normandled.com/product/view/id/876.html

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In this episode we  delve into the topic of RF (Radio Frequency) shields. . Chris explains the different types of RF shields—open top, closed top, and clip-based—detailing their applications, advantages, and challenges. We also explore the processes involved in placing these shields on circuit boards, emphasizing the importance of inspection and the complexities of manual versus automated methods, and discuss how to choose the best type of shields for your project. More importantly, Chris shares a detailed story about a poorly designed bathroom he recently experienced and realizes that one of his big pet peeves is thoughtlessness.

Show Links:

Two Piece Shield

• Snap on, top piece: BMI-S-201-C https://www.digikey.com/en/products/detail/laird-technologies-emi/BMI-S-201-C/2175914
• Solder on, bottom piece: BMI-S-201-F https://www.digikey.com/en/products/detail/laird-technologies-emi/BMI-S-201-F/2175888?s=N4IgTCBcDaIEIFkCSBaAyisAGAjCgYiALoC%2BQA

One Piece Shield

• BMI-S-101 https://www.digikey.com/en/products/detail/laird-technologies-emi/BMI-S-101/2175907

Clip Style

• S1811-46R https://www.digikey.com/en/products/detail/harwin-inc/S1811-46R/19200427

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In this episode Chris and Melissa continue their deep dive into the critical role of stencils in electronics assembly, with expert insights from Brett Babilonia. We discuss advanced techniques for stencil design, including custom reductions, step stencils, and nano coatings to ensure optimal solder paste application. The episode also highlights the importance of thoughtful PCB design to manage costs and improve manufacturing efficiency. 

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In this episode, we dive into the crucial role of stencils in electronics manufacturing. Joined by Brett Babilonia, we explore the complexities of stencil design, including handling missing data, determining foil thickness, and ensuring optimal solder paste application. We discuss common issues, such as SMT standoffs and hybrid components. Stay tuned for for more of an in-depth continuation in Part Two. 

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In this slightly random catchup episode Chris and Melissa discuss Chris' recent trip to California where he attended IPC APEX EXPO and hosted out first Pick, Place, Podcast meetup! Huge thanks to everyone who was able to come say hi, the wonderful conversations and show suggestions! 

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In this episode, we uncover the multifaceted persona of IPC President and CEO, Dr. John Mitchell, from his educational background to his Ironman pursuits. Learn about IPC alongside insights into John's acclaimed book, Fire Your Hiring Habits. John also talks about the history behind the IPC Apex Expo and what you can expect at the even if you participate.

Check out our other episode on IPC here.

Chris will be hosting a podcast meetup at IPC Apex Expo. We'd love it if you'd join him! 

• Date: Tuesday, April 9th
• Time: 3:15 PM to 5:00 PM
• Location: Room 209A, Anaheim Convention Center, CA

You can register for the event here. 

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