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Reply To: | TechNet E-Mail Forum. |
Date: | Thu, 11 Jun 1998 11:33:54 -0400 |
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Ernst,
Can you be more specific to as what you consider a defect..if bridging,
component placement and insufficient/non-wetting are your only criteria then 96%
seems low even for prototype development.....but that depends on the quality of
your BGA devices as well....
Marcelo
-----Original Message-----
From: Wallisch, Ernst [SMTP:[log in to unmask]]
Sent: Thursday, June 11, 1998 11:26 AM
To: [log in to unmask]
Subject: [TN] BGA First Time Yields
Importance: High
Fellow Technetters,
I am fairly new to the world of BGAs and we have only built
limited
quantities of CCAs with BGAs (388s and 352s on 17 layer PWBs) for
internal
customers. I am seeing a first time yield of approximately 96%.
Is this particularly bad for a low to mid volume environment?
What
kinds of FTY are other folks achieving?
Thanks in advance,
Ernst Wallisch
Manufacturing Engineering
Computing Devices Canada
[log in to unmask]
(613) 596-7536
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