TECHNET Archives

April 1997

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 m0wCRnc-000BjVC; Wed, 2 Apr 97 09:18 CST
Encoding:
8 TEXT
Old-Return-Path:
<[log in to unmask]>
Date:
Wed, 02 Apr 97 09:24:00 PST
Precedence:
list
Resent-From:
[log in to unmask]
Message-ID:
<[log in to unmask]>
X-Status:
Status:
O
X-Mailing-List:
<[log in to unmask]> archive/latest/11643
TO:
"'Technet'" <[log in to unmask]>
Return-Path:
<TechNet-request>
Resent-Message-ID:
<"DYmgA3.0.56G.lYdGp"@ipc>
Subject:
Leakage currents/Electrical Test
From:
"Nachbor, Suzanne (MN51)" <[log in to unmask]>
From [log in to unmask] Wed Apr 2 09:
50:03 1997
X-Loop:
[log in to unmask]
X-Mailer:
Microsoft Mail V3.0
Resent-Sender:
TechNet-request [log in to unmask]
Parts/Attachments:
text/plain (21 lines) 

We have some pwb's that when tested at 500 and 1000 volts show leakage 
currents in the 1 to 3 tetra range.  Has anyone substantiated that this 
occurs due to the presence of ionic contamination.  Are there any good 
references/technical articles on detection of ionic contamination and 
electrical test screening of the bare board.  The part has 10 mil min 
internal spacing, 4 mil minimum external spacing, and is fabricated from a 
high tg FR4 material.   

***************************************************************************
* TechNet mail list is provided as a service by IPC using SmartList v3.05 *
***************************************************************************
* To subscribe/unsubscribe send a message <to: [log in to unmask]>   *
* with <subject: subscribe/unsubscribe> and no text in the body.          *
***************************************************************************
* If you are having a problem with the IPC TechNet forum please contact   *
* Dmitriy Sklyar at 847-509-9700 ext. 311 or email at [log in to unmask]      *
***************************************************************************

ATOM RSS1 RSS2