TECHNET Archives

July 1998

TechNet@IPC.ORG

Options: Use Monospaced Font
Show Text Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 16 Jul 1998 17:58:31 -0700
Content-Type:
text/plain
Parts/Attachments:
text/plain (25 lines)
Dear all,

IPC-SM-782 shows pad width of 0.268" for 1825 chip capacitor. It's similar
to the case of the smaller packages that the pad is always a bit wider than
the component termination. However, considering the differential CTE
between the copper pad and the capacitor in the lateral direction, I worry
about the reliability. Am I over-worrying? Had anyone modified the pattern
(narrow down, perhaps) to cut down the thermal stress?

Thanks!
KK Chin
Artesyn Technologies

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################


ATOM RSS1 RSS2