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crap circuit boards

J

Jeff K

Jan 1, 1970
0
I have received these awful circuit boards from a vendor that show lots of
solder mask mis-registration and flaws. We used a bunch of them before we
found the problem. Now we need to implement some incoming inspection. I am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone have
any suggestions where?

thanks,

Jeff_M
 
P

PeteS

Jan 1, 1970
0
Jeff said:
I have received these awful circuit boards from a vendor that show lots of
solder mask mis-registration and flaws. We used a bunch of them before we
found the problem. Now we need to implement some incoming inspection. I am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone have
any suggestions where?

thanks,

Jeff_M

In the distant past when I had to do such things myself, I used an IPC
publication, IPC-A-610

I am not sure if you have to buy this standard [probably], but it's a
standard, so if your boards were required to be made to IPC-A-610, then
you'll have grounds for rejection.

Cheers

PeteS
 
F

Fred Bloggs

Jan 1, 1970
0
PeteS said:
Jeff said:
I have received these awful circuit boards from a vendor that show lots of
solder mask mis-registration and flaws. We used a bunch of them before we
found the problem. Now we need to implement some incoming inspection. I am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone have
any suggestions where?

thanks,

Jeff_M


In the distant past when I had to do such things myself, I used an IPC
publication, IPC-A-610

I am not sure if you have to buy this standard [probably], but it's a
standard, so if your boards were required to be made to IPC-A-610, then
you'll have grounds for rejection.

Cheers

PeteS

Heck yeah you have to buy it, and top dollar too- for the most poorly
written non-informational crap in print.
 
P

PeteS

Jan 1, 1970
0
Fred said:
PeteS said:
Jeff said:
I have received these awful circuit boards from a vendor that show lots of
solder mask mis-registration and flaws. We used a bunch of them before we
found the problem. Now we need to implement some incoming inspection. I am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone have
any suggestions where?

thanks,

Jeff_M


In the distant past when I had to do such things myself, I used an IPC
publication, IPC-A-610

I am not sure if you have to buy this standard [probably], but it's a
standard, so if your boards were required to be made to IPC-A-610, then
you'll have grounds for rejection.

Cheers

PeteS

Heck yeah you have to buy it, and top dollar too- for the most poorly
written non-informational crap in print.

I wasn't referring to the apparent quality (or otherwise) of the
standard, but it _can_ be useful.

<Understatement>Certainly it could do with some work. </Understatement>

If the OP is going to outsource the function to a lab they should be
using a quantified approach anyway.

Cheers

PeteS
 
R

Rob

Jan 1, 1970
0
Fred Bloggs said:
Jeff said:
I have received these awful circuit boards from a vendor that show lots
of
solder mask mis-registration and flaws. We used a bunch of them before
we
found the problem. Now we need to implement some incoming inspection. I
am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone
have
any suggestions where?

thanks,

Jeff_M


In the distant past when I had to do such things myself, I used an IPC
publication, IPC-A-610

I am not sure if you have to buy this standard [probably], but it's a
standard, so if your boards were required to be made to IPC-A-610, then
you'll have grounds for rejection.

Cheers

PeteS

Heck yeah you have to buy it, and top dollar too- for the most poorly
written non-informational crap in print.

If this is the standard I'm thinking of there's a crap low res version you
can download for free.
 
J

Joerg

Jan 1, 1970
0
Hello Jeff,

I have received these awful circuit boards from a vendor that show lots of
solder mask mis-registration and flaws. We used a bunch of them before we
found the problem. Now we need to implement some incoming inspection. I am
working on a checklist of things to check, so far it has 1 item "check
solder mask registration". What else would I look for?

Also considering using a lab to do this on a sample basis, does anyone have
any suggestions where?

Add via metallization checks to the list. I had some bad surprises there
lately, something that really was never a problem in the past.

Oh, and check whether your vendor has recently outsourced some or all
work. That could become a real problem.
 
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