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Forum Index : PCB Manufacturing : Diptrace Help

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OA47

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Joined: 11/04/2012
Location: Australia
Posts: 935
Posted: 05:02am 25 Jan 2018
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I have a double sided PCB in Diptrace and I am trying to link the ground pads of the 3T regs to the copper fill on the bottom of the PCB with vias for thermal purposes. Every time I try to achieve this I get errors in the DRC. Can anyone help with the right procedure to accomplish this?
OA47
 
Solar Mike
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Joined: 08/02/2015
Location: New Zealand
Posts: 1138
Posted: 10:51am 25 Jan 2018
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I use Diptrace quite a lot, cannot say I have seen this issue; are the Gnd pads on the same net as the copper fill other side of pcb?

Cheers
Mike
 
OA47

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Joined: 11/04/2012
Location: Australia
Posts: 935
Posted: 11:22pm 25 Jan 2018
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  Quote  I use Diptrace quite a lot, cannot say I have seen this issue; are the Gnd pads on the same net as the copper fill other side of pcb?


Thanks for the Reply Mike. The copper pour was not connected to a net. I didn't have a selection of a ground net but the pads for the ground on the 3T regs was net 0 so I attached the pour to net 0 and all is happy.
OA47
 
OA47

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Joined: 11/04/2012
Location: Australia
Posts: 935
Posted: 11:43pm 25 Jan 2018
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On further inspection this looses my bottom tracks so back to the drawing board.



 
Tinker

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Joined: 07/11/2007
Location: Australia
Posts: 1904
Posted: 11:36am 26 Jan 2018
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Just curious, OA47 reminds me of a germanium diode of yesteryear. Your avatar shows one too. Can you still buy germanium diodes?Edited by Tinker 2018-01-27
Klaus
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 12:53am 27 Jan 2018
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Yes, still available, the 1N34 is one example.
They are still useful for some obscure things where you might want zero forward threshold voltage, but at extremely low current.

A crystal set radio, or an RF voltage measurement probe for example.
Cheers,  Tony.
 
OA47

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Joined: 11/04/2012
Location: Australia
Posts: 935
Posted: 01:28am 27 Jan 2018
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  Quote  Just curious, OA47 reminds me of a germanium diode of yesteryear. Your avatar shows one too. Can you still buy germanium diodes?


I chose OA47 for my avatar as AFAIR that would have been the first semiconductor I would have purchased for a project (Crystal Set)
 
Warpspeed
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Joined: 09/08/2007
Location: Australia
Posts: 4406
Posted: 12:32am 27 Feb 2018
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That certainly brings back distant memories.......
Cheers,  Tony.
 
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