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
Mime-Version:
1.0
Content-Type:
text/plain; charset=US-ASCII
Old-Return-Path:
Date:
26 Nov 96 11:07:48 PST
Precedence:
list
Resent-From:
Resent-Sender:
TechNet-request [log in to unmask]
X-Status:
Status:
O
X-Mailing-List:
<[log in to unmask]> archive/latest/8028
TO:
Return-Path:
<TechNet-request>
From [log in to unmask] Tue Dec 3 13:
53:18 1996
X-Loop:
Resent-Message-ID:
<"yh9RD3.0.wwF.Hupco"@ipc>
Subject:
From:
[log in to unmask] (Sherman Banks)
Received:
by ipc.org (Smail3.1.28.1 #2) id m0vSSjC-0000QBC; Tue, 26 Nov 96 12:59 CST
X-Nvlenv-01Date-Posted:
26-Nov-1996 12:15:12 -0800; at NGM1.Trimble
References:
<6FA0E639028DD9D1@-SMF->
Message-Id:
<6FA0E639018DD9D1@-SMF->
Parts/Attachments:
text/plain (26 lines)
We are reviewing our SMT pad patterns and would like to evaluate them 
based on the volume of solder AFTER reflow. I understand a rule-of thumb 
for volume after reflow relative to volume before reflow is approximately 
50%. However, I feel like I need more precise information. 

Can someone tell me what the relationships are, or where to find a 
reference, for volume after reflow based on per cent metal content 
(88-92%) of the paste and particle size distribution (Type II or III)?

Thanks in advance

Regards

Sherman Banks
[log in to unmask]
408/481-6047

***************************************************************************
* 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.        *
***************************************************************************



ATOM RSS1 RSS2