Yes, we are using PADS. Any suggestions would be appreciated.
Thanks,
Carl
Carl Van Wormer, P.E.
Senior Hardware Engineer
Cipher Systems
1800 NW 169th Place, Suite B-100
Beaverton, OR 97006
Cipher Systems (503) 617-7447
Direct Line (503) 425-5163
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Wilson, Bob
Sent: Thursday, November 20, 2008 9:13 AM
To: [log in to unmask]
Subject: Re: [TN] MELF pad shape question
Are you using PADS as a layout tool?
If you are, I can tell you how to do the odd pad size.
Bob Wilson
E/M Designer, CID+
SpectraSensors, Inc.
11027 Arrow Route
Rancho Cucamonga, CA 91730
(909) 948-4110
www.spectrasensors.com
www.ipc.org <http://www.ipc.org/>
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Gumpert, Ben
Sent: Thursday, November 20, 2008 7:26 AM
To: [log in to unmask]
Subject: Re: [TN] MELF pad shape question
Carl,
This notch is used to prevent edge overhang of the component. The pad
shape helps keep the component centered on the pad, otherwise the wider
middle of the component may overhang the pad edge even if the narrower
bottom is on the pad and soldered.
Ben
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Carl VanWormer
Sent: Thursday, November 20, 2008 10:09 AM
To: [log in to unmask]
Subject: [TN] MELF pad shape question
A customer is using MELF parts on an existing board and is asking us to
add some more parts of a different size. The new parts are DL-35 and
the manufacturers data sheet shows a rectangular pad as the recommended
size. All of the MELF parts on their current board have small notches
at the middle-inside of each pad like:
********** **********
********** **********
***** *****
********** **********
********** **********
The customer is requesting that we make pads similar to pads on other
parts, but properly sized for the DL-35 part.
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