Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0uyfrW-0000PiC; Thu, 5 Sep 96 09:56 CDT |
Old-Return-Path: |
|
Date: |
Thu, 5 Sep 1996 10:55:52 -0400 |
Precedence: |
list |
X-Sun-Charset: |
US-ASCII |
Resent-Sender: |
|
X-Status: |
|
Status: |
O |
X-Mailing-List: |
|
TO: |
|
From [log in to unmask] Thu Sep 5 14: |
20:35 1996 |
Return-Path: |
<DesignerCouncil-request> |
Resent-Message-ID: |
<"w3ULL2.0.u7C.pekBo"@ipc> |
Subject: |
|
From: |
|
X-Loop: |
|
Resent-From: |
|
Cc: |
|
Message-Id: |
|
Parts/Attachments: |
|
|
Fred...
I would be concerned with this "flying lead" during vibration, but
I will assume that you are tack bonding it down, but back to your question.
We have been reworking Military pwb's forever or maybe longer and we
isolate the lead from its land pattern as follows:
1) Unsolder lead and lift from pad. Remove excess solder from pad
and lead.
2) Cut a piece of Kapton tape slightly larger than pad to be isolated
and apply over pad and under component lead.
3) Apply epoxy to completely cover tape and component lead.
4) Jumper as required.
I don't beleive that this procedure is documented in a Mil-Std
rework spec, but it is in our Standard Repair Manual and has been
approved by our customer/Military. Soldering a wire to a component lead
is documented in Mil-C-28809. I am not sure if there is an equivalent
IPC spec. Hope this helps...It works for us. If you want to discuss this
please feel free to contact me.
Regards,
Bob Vanech
****************************************************************************
* The mail list is provided as a service by IPC using SmartList v3.05 *
****************************************************************************
* To unsubscribe from this list at any time, send a message to: *
* [log in to unmask] with <subject: unsubscribe> and no text. *
****************************************************************************
|
|
|