Makezine_COTM_Capacitor-BadgeAkiba of Freaklabs, a Tokyo-based open-source electronics kitmaker, needed to add some 0805 surface-mount capacitors to an existing PCB, so he stacked them up!

super ghetto bulk capacitance hack. my RF amp is more power hungry than i expected…

See the related links below for more of Akiba’s awesome work!

John Baichtal

John Baichtal

My interests include writing, electronics, RPGs, scifi, hackers & hackerspaces, 3D printing, building sets & toys. @johnbaichtal

  • Jdoughe

    Not that amazing, we did this at a company I worked for when they printed the boards wrong. Stacked them 2 high and then overmolded. It was a complete mess.

  • Jonas

    DId that myself last week, with 0402-sized capacitors. No big deal, very simple using a microscope and a good soldering pen.

  • Simon

    Did that in two projects before. You can even buy something like that:

  • Andy in Tucson

    That’s fine for a prototype. Not at all for production.
    Seriously, it’s not clear what values he needed but you can buy 0805 caps in values up to 100 uF. Look at Mouser. Lots of parts from which to choose, all in stock, obtainable overnight.

    • Pat

      Highest voltage caps get pretty low voltage, fast. A 100 uF 0805 is 6.3V max (in tantalum). Stacking lower capacitance caps gets you a high capacitance cap with a high voltage rating (and lower ESR, but much higher ESL).

  • DragonDon

    Hmm, stacking things for more efficiency…wonder where that idea came from….

  • jimday

    nice hack. I like it!