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Depends on the class of board and its application. In my game (defense
electronics), any work of that nature requires the board to be tested again
afterwards.
I don't have my copy of IPC-A-610 handy, but there is something in there
about reworking PTH technology boards. Or try J-STD-001.
Regards
Pete Duncan
John Fahey
<jfahey@ECHEL To: [log in to unmask]
ON.COM> cc: (bcc: DUNCAN Peter/Asst Prin Engr/ST Aero/ST Group)
Sent by: Subject: Re: [TN] T/H Capacitor Removal- IPC standards?
TechNet
<[log in to unmask]
ORG>
08/21/01
01:47 AM
Please
respond to
"TechNet
E-Mail
Forum."
Thanks Phil and George. Good Points so far.
Our customer does not specify bout the bare copper. However, I am greatly
concerned about IPC requirements/standards in terms of removing these caps.
In addition, these are finished assemblies so is it recommended to put
these
units back through a functional test after removal of these capacitors?
Thanks,
John
John Fahey
Manufacturing Engineer
Echelon Corp
415 Oakmead Parkway
Sunnyvale
CA 94085
[log in to unmask]
Phone: 408 938 5330
Fax: 408 328 3804
-----Original Message-----
From: Phil Nutting [mailto:[log in to unmask]]
Sent: Monday, August 20, 2001 10:36 AM
To: [log in to unmask]
Subject: Re: [TN] T/H Capacitor Removal- IPC standards?
John and Charles,
But aren't there some people who expect to have all trimmed leads
soldered after trimming so no bare copper shows through? We have a
customer who requests this attribute.
Phil
-----Original Message-----
From: Charles Caswell [mailto:[log in to unmask]]
Sent: Monday, August 20, 2001 1:28 PM
To: [log in to unmask]
Subject: Re: [TN] T/H Capacitor Removal- IPC standards?
That would be my prefered methos. Least risk of damage to the board,
lowest cost. I wouldnt even clip the solder side.
Charles Caswell
Process Lead, PCB
Frontier Electronic Systems
-----Original Message-----
From: John Fahey [mailto:[log in to unmask]]
Sent: Monday, August 20, 2001 12:17 PM
To: [log in to unmask]
Subject: [TN] T/H Capacitor Removal- IPC standards?
Good Morning.
As part of a design mod, I have been requested to remove 2 Through Hole
resistors from one of our assemblies. There are @2000 boards.
What is the recommended process for removing Through Hole capacitors. Is
there any IPC guidelines?
I would like to just clip the leads on the top and bottom of the board
for
an easy rework. This will leave part of the leads soldered in the
holes,
but I am not aware of any issue with this apart from the fact it may not
look pretty!
Any advice would be much appreciated.
Thanks again,
John
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