Hi ,
Its depend if the failure is inside the capacitor or a solder joint
failure.
Crack / short / open (inside the caps layers) in such small size of SMT
caps (for pacemakers), supposed to be a manufacturing failure.
Solder joint failure - Solder crack, thumb stone, de wetting, shift, etc is
a PCB design or process failure.
Best Regards
Reuven ROKAH
e mail: [log in to unmask]
Werner Engelmaier
<[log in to unmask]
OM> To
Sent by: TechNet [log in to unmask]
<[log in to unmask]> cc
Subject
27/06/2006 18:09 Re: [TN] Bad capacitors in Boston
Scientific Defibrillators and
Pacemakers
Please respond to
TechNet E-Mail
Forum
<[log in to unmask]>
; Please respond
to
[log in to unmask]
M
Hi,
Everybody seems to be concentrating on the capacitors—it could just as
likely
be the assembly process in combination with the PWB design cracking the
CCs.
In fact, from the reported numbers/percentages, that would be my first
guess.
Werner
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 1.8e
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to
[log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to
[log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16
for additional information, or contact Keach Sasamori at [log in to unmask] or
847-615-7100 ext.2815
-----------------------------------------------------