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June 2000

DesignerCouncil@IPC.ORG
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DesignerCouncil <[log in to unmask]>
Subject:
Re: UL spec.'s
From:
John Laur <[log in to unmask]>
Date:
Mon, 5 Jun 2000 09:42:16 -0500
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1.0
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Mark Mainland <[log in to unmask]>
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"DesignerCouncil E-Mail Forum." <[log in to unmask]>, [log in to unmask]
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Mark,

Creepage and clearance is dependent on the type of equipment you are
designing and the correct UL spec must be used.  UL840 is a start.
Conductor thickness will determine current carying capability and can be
found in IPC-2221.  Check out Doug Brook's calculator
http://www.eskimo.com/~ultra/

John Laur
Rockwell Automation /Allen-Bradley
Milwaukee, WI




Mark Mainland <[log in to unmask]>@IPC.ORG> on 06/05/2000 08:29:07 AM

Please respond to "DesignerCouncil E-Mail Forum."
      <[log in to unmask]>; Please respond to Mark Mainland
      <[log in to unmask]>

Sent by:  DesignerCouncil <[log in to unmask]>


To:   [log in to unmask]
cc:
Subject:  [DC] UL spec.'s


Can anyone tell me which UL spec covers trace spacing and conductor
thickness for printed circuit boards.

Thanks


Mark Mainland
PCB Designer
Cherry Electrical Products
11200 - 88th Ave.
PO Box 581913
Pleasant Prairie, WI 53158
Ph. 262.942.6659
Page. 888.819.0198
Fx. 262-942-6334

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