MEP EP#290: Avoiding Bean Counters

MEP EP#290: Avoiding Bean Counters

MEP EP#290: Avoiding Bean Counters

BGA vs. QFP - PCBA cost comparison

  • Inspired by Tim Jager on the slack channel
  • 48 pin QFP vs 56 pin BGA
  • Escaping the package
    • Layer count
    • Increase in PCB tolerances
    • Blind and buried vias required?
  • Inspection costs
    • Leaded packages like QFPs can easily be optically inspected
    • BGAs typically require X-ray
  • Tooling
    • BGAs typically require small paste apertures and might require more expensive coatings and stencils
    • Depending on lead spacing you may not need a stencil at your CM for a QFP

Using the MF platform to predict pricing

  • Napkin math your PCB assembly cost the “easy” way
  • Come up with a rough Bill of Materials
  • Draw up a quick board outline that might be the size you require
    • Enclosures dictate PCB sizes more often then not
  • Upload to the platform
    • Can change the bill of materials on the fly to make pricing considerations at prototype to high volume
  • Ways to control pricing on your PCB Assembly

Episoder(448)

EP#8: Bits That Don’t Quit

EP#8: Bits That Don’t Quit

Podcast NotesStephen and Parker do a live discussion on how the digital and analog side of the Super Simple Power Supply will interface with each other. MultiSim has been a huge part in simulating the...

25 Mar 201639min

EP#7: The Art of Retention Force

EP#7: The Art of Retention Force

Parker has almost finalized the front panel design for the Super Simple Power Supply. Going to have a "VU" meter for how much power it is pulling.Parker is also still looking for a proper encoder that...

18 Mar 201624min

EP#6: Mythical Transistors

EP#6: Mythical Transistors

Podcast NotesParker is still working on the Super Simple Power Supply. He is designing the front panel. He is considering using some WP1043 Kingbright LEDs.Super Simple Power Supply will have two deci...

11 Mar 201625min

EP#5: Tilting Tubes

EP#5: Tilting Tubes

Parker ordered all the parts for the SAIM this week. The v-slot rails and brackets from OpenBuild, iES-1706 servos from Leadshine, and 3D printed parts from Shapeways.MacroFab uses 3D printed parts to...

4 Mar 201647min

EP#4: Linear Effects of Licensing

EP#4: Linear Effects of Licensing

Audio quality of the podcast leveled up! Stephen and Parker went over to The Pharmacy Recording Studio which is run by Josh Moore. He hooked them up with 2 (!) microphones and a nice an acoustically p...

26 Feb 201617min

EP#3: Liquid Toroidal Electrons

EP#3: Liquid Toroidal Electrons

Stephen and Parker have been testing the main opamp for the OPA541. Stephen wrote a blog post detailing the opamp tests with simulation and real world testing.GitHub link to the repository for the SSP...

19 Feb 201622min

EP#2: Mechanical MultiSIM Monsters

EP#2: Mechanical MultiSIM Monsters

Stephen continues his work on the Stupid Simple Power Supply (SSPS). He decided to go digital voltage control over analog. Also he has been trying out MultiSIM BLUE by Mouser for circuit simulation. S...

10 Feb 201620min

EP#1: Opamp-timal Power Supply

EP#1: Opamp-timal Power Supply

Stephen talks about the Stupid Simple Power Supply (SSPS). He designed a OPA541 breakout board for testing. See figure 1.OPA541 Datasheet : Street price of $21.88.Parker brings up that blinky LEDs are...

9 Feb 201623min

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