Received: |
by ipc.org (Smail3.1.28.1 #2)
id m0vkyUr-0000WXC; Thu, 16 Jan 97 14:33 CST |
Content-Type: |
text/plain; charset=us-ascii |
Old-Return-Path: |
|
Date: |
Thu, 16 Jan 1997 20:39:16 +0100 |
Precedence: |
list |
Resent-From: |
|
Resent-Sender: |
|
MIME-Version: |
1.0 |
Status: |
O |
X-Mailing-List: |
|
From [log in to unmask] Thu Jan 16 15: |
16:40 1997 |
TO: |
|
Return-Path: |
<TechNet-request> |
X-Status: |
|
Resent-Message-ID: |
<"Xo-QA3.0.pvB.62fto"@ipc> |
Subject: |
|
From: |
|
X-Loop: |
|
Content-Transfer-Encoding: |
7bit |
X-Mailer: |
Mozilla 3.0 (Win95; I) |
Message-ID: |
|
Parts/Attachments: |
|
|
Hello Technet,
In the near future I have to assemble boards with Alpha Staystick
adhesive pads (a thermally conductive material) underneath fine-pitch
devices. If handsoldering is to be avoided, the pad must be placed after
stencil printing, prior to placing the component and soldering by
IR/convection reflow. To enable complete filling of the gap, the bottom
of the leads is at the same level as the bottom of the package body (no
stand-off). Unfortunately the design can not be changed.
My question is : How will the adhesive pads affect the number of
misaligned components on the soldered boards ? Is it better to use
manual soldering ?
-- Daan Terstegge --
***************************************************************************
* TechNet 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. *
***************************************************************************
* 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] *
***************************************************************************
|
|
|