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Largest PCB? — Parallax Forums

Largest PCB?

W9GFOW9GFO Posts: 4,010
edited 2012-06-20 01:00 in General Discussion
I just got an email from Advanced Circuits, they are telling me that they have the ability to make boards with up to 20 oz. copper and dimensions up to 37" x 120".

Ever see a PCB that would require that size of board?

Comments

  • LoopyBytelooseLoopyByteloose Posts: 12,537
    edited 2012-06-19 11:38
    Yes, special LED display billboards. They are all over Taiwan with multi-color and in Chinese characters.
  • WBA ConsultingWBA Consulting Posts: 2,934
    edited 2012-06-19 12:39
    Saw this board at APEX this year. It was a half inch thick and about 22"x48". It was a server backplane that utilized pressfit high density connectors. It would never see solder or an SMT line though.
    2012-03-01_11-23-44_179.jpg


    Our new Juki JX100-LED can do boards 800
    2012-03-01_11-23-44_179.jpg
    1024 x 1820 - 201K
  • Duane C. JohnsonDuane C. Johnson Posts: 955
    edited 2012-06-19 15:38
    Back in the day I worked for Univac.
    The 1100-80 water cooled mainframe computer had a back plane made with PC board.
    I don't remember precisely the dimensions but as I recall it was about 4' x 5' and had 58 layers.
    Several of the power planes conducted way more than 600 amps, (ECL logic).

    Duane J
  • TubularTubular Posts: 4,706
    edited 2012-06-19 21:45
    Thanks W9GFO good to know. A year or so ago I was trying to find a place that could do longer than 500mm (20"). It was a struggle
  • Heater.Heater. Posts: 21,230
    edited 2012-06-20 01:00
    I think the biggest PCB used for logic circuits I have ever seen was the CPU board in a Data General Nova mini computer.

    That board seemed to be about as wide as will possibly fit into the 19 inch rack that was the chassis of the machine and went all the way from front to back. Totally covered in TTL chips.

    That Nova was still in service monitoring/commanding the traffic lights in Helsinki until about 5 years ago. They finally retired it when it's 10MB hard drive, about the size of a washing machine, started making noises like a concrete mixer full of gravel.
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