TECHNET Archives

1996

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Condense Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Received:
by ipc.org (Smail3.1.28.1 #2) id m0tjiNf-00005TC; Tue, 6 Feb 96 02:04 CST
Old-Return-Path:
Content-length:
428
Precedence:
list
Resent-From:
Resent-Sender:
X-Status:
Status:
O
X-Mailing-List:
<[log in to unmask]> archive/latest/2526
From [log in to unmask] Wed Feb 7 15:
43:23 1996
TO:
Return-Path:
X-Loop:
Content-type:
text/plain
Subject:
From:
Date:
Tue, 6 Feb 1996 03:07:57 -0500
Resent-Message-ID:
<"tQQzR1.0.2KB.ojm5n"@ipc>
X-Mailer:
AIR Mosaic (16-bit) version 4.00.08.32
Message-Id:
Parts/Attachments:
text/plain (8 lines)
Can someone tell me how much spacing I need around a 1/2 inch round pad and a surrounding
 ground plane with 500 VDC differential  at 1000 feet altitude and a dusty environment?  This is in a high
 power application (15KW).  I've seen answers ranging from 0.0002 inch per volt for non-coated
 boards in an old MIL-STD-275, to 0.5 inch in a VDE handbook.  I need a good practical 
answer and would greatly appreciate a response.



ATOM RSS1 RSS2