TECHNET Archives

March 2018

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
Sender:
TechNet <[log in to unmask]>
X-To:
[log in to unmask]
Date:
Sat, 3 Mar 2018 18:18:00 -0600
Reply-To:
TechNet E-Mail Forum <[log in to unmask]>, Wayne Showers <[log in to unmask]>
Subject:
Bottom Termination Components (BTC) Voiding Limits
MIME-Version:
1.0
Message-ID:
<[log in to unmask]>
Content-Type:
text/plain; charset="utf-8"
Content-Transfer-Encoding:
quoted-printable
From:
Wayne Showers <[log in to unmask]>
Parts/Attachments:
text/plain (9 lines) 
I do not know of an IPC criteria on this.  I have seen 25% (The BGA criteria) cited, but this is not, to my knowledge accurate.
The limits I have used in the past are 50% Coverage with no void exceeding 15% in the center and no more than 10% anywhere else.
I also used a 70% Coverage and 10% Void criteria for a very heat sensitive application.

Question 1: Is there now a citable IPC criteria? and if NO,
Question 2: What are some of this groups recommended criteria?

Thanks and Regards, Wayne Showers, NPI/Technical Manager, 4Front Solutions

ATOM RSS1 RSS2