unusual shapes pcb made the price differents ?

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#1
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Hai All

I'm design unsual pcb and planned to sent to USA pcb fab probably pad2pad or oshpark.
Did the pcb fab cost me more for unusual shape.?
Not yet contacted the pcb fab cause my cslculation budget in progress.
Any info will apprrciate.

Regards
Tiro

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Normally, the shape doesn't matter as long as it fits in a square of the size you pay for. For example, you can order a PCB of 5cm*5cm. Now your design just has to fit in a 5 by 5 cm square but it can be for example a star.

Of course, you now pay for more area than you get. Most manufacturers handle it that way.

 

I recommend to consult the website of your preferred manufacturer to make sure they do it that way too. If the website is inconclusive, contact their support.

 

Edit: Here's a link to itead's design requirements: http://support.iteadstudio.com/s...

"Some people die at 25 and aren't buried until 75." -Benjamin Franklin

 

What is life's greatest illusion?"  "Innocence, my brother." -Skyrim

 

Last Edited: Thu. Mar 23, 2017 - 12:48 PM
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OshPark will do any outline you specify. You will be charged for the area of the bounding rectangle. Done it with circular boards that have some flats on the periphery and some tabs in the middle of the flats. Came out very nicely.

 

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

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tiro2016 wrote:
Not yet contacted the pcb fab

Why on earth not?!

 

They are the ones that have the definitive answer!

 

They will be able to advise you of any way(s) to optimise your design to their specific workings ...

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I like OshPark.  They charge $5 per square inch with free shipping for 3 identical boards.

 

I decided to make a small PCB that would convert a 6 pin squeeze on connector for the 25 mil pitch PDI ribbon cable from the Atmel-Ice to a 2mm header for my PCB.  Those are small parts.  They look a lot bigger in this picture.   Total price was 45 cents.  ($0.45) 

 

Actually I haven't used them.  While waiting for the boards, I learned how to easily separate the conductors of the ribbon cable and squeeze them individually on the correct pins of the 2mm connector.  45 cents down the drain.  crying  I may use them in the future.  Some day I may try something more daring and avant-garde.  50 mil headers.  Are they practical or are the pins too flimsy?

 

 

 

 

 

 

Last Edited: Fri. Mar 24, 2017 - 02:11 AM
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I have used OshPark on maybe 8 or 10 boards. Some regular, some irregular. Their work has been excellent. So far, all traces have no known breaks, so far, no trace-trace shorts. Holes the specified size. Good  solder mask and good silk screening. Price very modest for the quality. Not perfect but quite good. 

 

Once when I did try, it was difficult to get a human response. So, I just submitted the odd board that I wanted to know about and it just came back, right. I HAVE had boards rejected on the initial automated inspection. It seems quite thorough and quite accurate. No cost to you if it fails and you have to resubmit.

 

 

Jim

Jim Wagner Oregon Research Electronics, Consulting Div. Tangent, OR, USA http://www.orelectronics.net

Last Edited: Fri. Mar 24, 2017 - 05:31 AM
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Most of the current crop of low-cost prototype oriented PCB makers (OSHPark, Seeed, Itead, PCBWay, DirtyPCBs, etc) seem to have discovered/decided that it's cheaper to send all the panels through a "routing" step (that allows for arbitrary board shapes) than to try to handle board shapes as separate line item (which is probably because they're combining multiple designs onto a single panel, and can't just cut it along straight lines anyway.)  I'd think that at production volumes, there might be a cost savings to having rectangular boards that can skip that routing step, but I'm not likely to run into that as a concern!

 

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Wow...thanks for info.
Also I design pcb another unusual form PCBs.
Maybe at different threads.

Regards
Tiro