Post by thread:[EE] Digikey accuracy and QC??

Received these two items this morning! http://www.speff.com/img002.jpg http://www.speff.com/img003.jpg A piece of leader tape and some ferrite "capacitors"... Anyone else having similar problems? They never used to make this sort of error. >Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" spam_OUTspeffTakeThisOuTinterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com

So these are the famous memristors... Now seriously, DK has been reported in the list to make too many mistakes too often in recent months. 2010/5/12 Herbert Graf <.....hkgrafKILLspam@spam@gmail.com> > On Wed, 2010-05-12 at 12:09 -0400, Spehro Pefhany wrote: > > Received these two items this morning! > > > > http://www.speff.com/img002.jpg > > It's the latest technology: invisible resistors!! Why are you > complaining? :) > > > -

Yes, I have had this kind of problem recently (got a USB cable instead of a heatsink) and I agree, it never used to happen. Sean On Wed, May 12, 2010 at 12:09 PM, Spehro Pefhany <speffKILLspaminterlog.com> wrote: {Quote hidden}> Received these two items this morning! > > http://www.speff.com/img002.jpg > http://www.speff.com/img003.jpg > > A piece of leader tape and some ferrite "capacitors"... > > Anyone else having similar problems? They never used to make > this sort of error. > >>Best regards, > > Spehro Pefhany --"it's the network..." "The Journey is the reward" > .....speffKILLspam.....interlog.com Info for manufacturers: http://www.trexon.com > Embedded software/hardware/analog Info for designers: http://www.speff.com > > > >

On 5/12/2010 9:09 AM, Spehro Pefhany wrote: > Received these two items this morning! > > http://www.speff.com/img002.jpg > http://www.speff.com/img003.jpg > > A piece of leader tape and some ferrite "capacitors"... > > Anyone else having similar problems? They never used to make > this sort of error. > >> Best regards, > > Spehro Pefhany --"it's the network..." "The Journey is the reward" > EraseMEspeffspam_OUTTakeThisOuTinterlog.com Info for manufacturers: http://www.trexon.com > Embedded software/hardware/analog Info for designers: http://www.speff.com I saw three cases like this last fall on three separate orders. Two of which discovered at the assembly house ;< They are either slipping or one of their competitors hired someone to work in Digikey's warehouse...

I spoke with a Digikey representative a couple of months ago about the increasing error rate. Apparently, as the economy slowed two years ago, they shrunk their headcount to match the reduced order volume. With the improving business climate, they have started hiring again, but it takes many months to properly train a new hire. They employ over 3000. They realize they have a problem, and are trying to do everything they can to correct the situation. Time will tell. Dave Challis > I saw three cases like this last fall on three separate orders. Two of > which discovered at the assembly house ;< > > They are either slipping or one of their competitors hired someone to > work in Digikey's warehouse... > --

DK is pretty local to me (just upstate), and I recently saw a bit on them in the local paper. The gist was that they are having trouble right now filling job slots- they basically said they'd hire some hundreds of people today if they could find qualified people to fill them. To me that says two things: they are understaffed and some of the people they are hiring are right on the fringe of being competent for the job they have been given. I expect time will set things aright. Mike H. On Wed, May 12, 2010 at 11:54 AM, David Challis <dchallisspam_OUTcox.net> wrote: {Quote hidden}> I spoke with a Digikey representative a couple of months ago about the > increasing error rate. Apparently, as the economy slowed two years ago, > they shrunk their headcount to match the reduced order volume. With the > improving business climate, they have started hiring again, but it takes > many months to properly train a new hire. They employ over 3000. They > realize they have a problem, and are trying to do everything they can to > correct the situation. Time will tell. > > Dave Challis > > > I saw three cases like this last fall on three separate orders. Two of > > which discovered at the assembly house ;< > > > > They are either slipping or one of their competitors hired someone to > > work in Digikey's warehouse... > > -- > > -

This is actually a "fortunate mistake" if we can say so. If you receive a different value smd cap you might hardly realise why your device fails... maybe after good few hours of scratching the head. Tamas On Wed, May 12, 2010 at 5:54 PM, David Challis <@spam@dchallisKILLspamcox.net> wrote: {Quote hidden}> I spoke with a Digikey representative a couple of months ago about the > increasing error rate. Apparently, as the economy slowed two years ago, > they shrunk their headcount to match the reduced order volume. With the > improving business climate, they have started hiring again, but it takes > many months to properly train a new hire. They employ over 3000. They > realize they have a problem, and are trying to do everything they can to > correct the situation. Time will tell. > > Dave Challis > > > I saw three cases like this last fall on three separate orders. Two of > > which discovered at the assembly house ;< > > > > They are either slipping or one of their competitors hired someone to > > work in Digikey's warehouse... > > -- > > -

Don't you mean unfortunate mistake? On Wed, May 12, 2010 at 1:31 PM, Tamas Rudnai <KILLspamtamas.rudnaiKILLspamgmail.com> wrote: > This is actually a "fortunate mistake" if we can say so. If you receive a > different value smd cap you might hardly realise why your device fails... > maybe after good few hours of scratching the head. > > Tamas > >

I think that Digikey used to employ about 1/3rd of the employable workforce in Thief River Falls, MN. I'm surprised that they can't just re-hire the people they let go before. They must still be around, and the only jobs there are DK, Arctic Cat, and miscellaneous service jobs. Sean On Wed, May 12, 2010 at 12:54 PM, David Challis <RemoveMEdchallisTakeThisOuTcox.net> wrote: {Quote hidden}> I spoke with a Digikey representative a couple of months ago about the > increasing error rate. Apparently, as the economy slowed two years ago, > they shrunk their headcount to match the reduced order volume. With the > improving business climate, they have started hiring again, but it takes > many months to properly train a new hire. They employ over 3000. They > realize they have a problem, and are trying to do everything they can to > correct the situation. Time will tell. > > Dave Challis > >> I saw three cases like this last fall on three separate orders. Two of >> which discovered at the assembly house ;< >> >> They are either slipping or one of their competitors hired someone to >> work in Digikey's warehouse... >> -- > >

On Wed, May 12, 2010 at 6:45 PM, Sean Breheny <spamBeGoneshb7spamBeGonecornell.edu> wrote: > Don't you mean unfortunate mistake? > Unfortunate would have been when you can't easily tell if the component is the right one (like unmarked smd caps, you would not tell at the first glance if you got the 100nF or the 1uF). When you can spot the difference straight away (like missing components or different once), then you can correct the order before you populate the components onto your board -- hence I would call that case as "fortunate mistake". Of course, the best case would have been no mistake at all... Tamas > > On Wed, May 12, 2010 at 1:31 PM, Tamas Rudnai <TakeThisOuTtamas.rudnaiEraseMEspam_OUTgmail.com> > wrote: > > This is actually a "fortunate mistake" if we can say so. If you receive a > > different value smd cap you might hardly realise why your device fails... > > maybe after good few hours of scratching the head. > > > > Tamas > > > > > -

At 01:45 PM 12/05/2010, you wrote: >Don't you mean unfortunate mistake? Do you wish us ill? It's an immediately obvious mistake. That's *good*. Worst case (for example, if a supplier shipped a 100pF instead of a 1uF bypass cap, it might actually work most of the time and result in extremely expensive returns from the field, damaged reputation etc. Best regards, Spehro Pefhany --"it's the network..." "The Journey is the reward" RemoveMEspeffTakeThisOuTinterlog.com Info for manufacturers: http://www.trexon.com Embedded software/hardware/analog Info for designers: http://www.speff.com

Sorry, I misread your email. When you said "this is actually a fortunate mistake" I thought that "this" referred to what you mentioned next (receiving a different value smd cap). Sean On Wed, May 12, 2010 at 2:02 PM, Tamas Rudnai <tamas.rudnaiEraseME.....gmail.com> wrote: {Quote hidden}> On Wed, May 12, 2010 at 6:45 PM, Sean Breheny <EraseMEshb7cornell.edu> wrote: > >> Don't you mean unfortunate mistake? >> > > Unfortunate would have been when you can't easily tell if the component is > the right one (like unmarked smd caps, you would not tell at the first > glance if you got the 100nF or the 1uF). When you can spot the difference > straight away (like missing components or different once), then you can > correct the order before you populate the components onto your board -- > hence I would call that case as "fortunate mistake". Of course, the best > case would have been no mistake at all... > > Tamas > >

On Wed, May 12, 2010 at 8:16 PM, Sean Breheny <RemoveMEshb7EraseMEEraseMEcornell.edu> wrote: > Sorry, I misread your email. When you said "this is actually a > fortunate mistake" I thought that "this" referred to what you > mentioned next (receiving a different value smd cap). > No, maybe I was not clear, sorry about that. Tamas {Quote hidden}> > Sean > > > On Wed, May 12, 2010 at 2:02 PM, Tamas Rudnai <RemoveMEtamas.rudnaispam_OUTKILLspamgmail.com> > wrote: > > On Wed, May 12, 2010 at 6:45 PM, Sean Breheny <RemoveMEshb7TakeThisOuTspamcornell.edu> wrote: > > > >> Don't you mean unfortunate mistake? > >> > > > > Unfortunate would have been when you can't easily tell if the component > is > > the right one (like unmarked smd caps, you would not tell at the first > > glance if you got the 100nF or the 1uF). When you can spot the difference > > straight away (like missing components or different once), then you can > > correct the order before you populate the components onto your board -- > > hence I would call that case as "fortunate mistake". Of course, the best > > case would have been no mistake at all... > > > > Tamas > > > > > -

> Unfortunate would have been when you can't easily tell if the component is > the right one (like unmarked smd caps, you would not tell at the first > glance if you got the 100nF or the 1uF). We had this happen. And with space qualified components, bought from a surplus components company. At least we caught it before the 1000 or so caps all got fitted. Still had to change a 100 or so though.

> It's the latest technology: invisible resistors!! Why are you > complaining? :) And everyone knows current and voltage can be exchanged, so sending coils instead of capacitors is perfectly normal. -- Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: http://www.voti.nl/hvu

no, unfortunate would be a different-valued component in the same unmarked housing. > Don't you mean unfortunate mistake? > >> This is actually a "fortunate mistake" if we can say so. If you receive a >> different value smd cap you might hardly realise why your device fails... >> maybe after good few hours of scratching the head. -- Wouter van Ooijen -- ------------------------------------------- Van Ooijen Technische Informatica: http://www.voti.nl consultancy, development, PICmicro products docent Hogeschool van Utrecht: http://www.voti.nl/hvu