Actually, our purchasing department has informed us that 0402 and 0603 parts
are much easier to get than 0805s (easy is relative in today's component
market). As more companies are going to the smaller parts, the component
vendors appear to be focusing on producing the 0402s and 0603s. In fact,
some vendors are even starting to obsolete the 0805s. So, if your design
team can reduce the package size, I recommend that you try to get them to do
so. A slightly better product (if there is even any difference) is not much
use to your company if you can't get the parts to build it.
-Steve
Steven Lustig
Manufacturing Program Manager
American Megatrends, Inc.
Norcross, GA
(770) 326-9151
[log in to unmask]
> ----------
> From: Tenison Stone[SMTP:[log in to unmask]]
> Sent: Friday, July 07, 2000 10:41 AM
> To: [log in to unmask]
> Subject: Re: [TN] Reducing package to 0402
>
> Dominic,
>
> I don't believe size if the lead time factor. My buyer tells me the value
> if
> the dominant factor in lead time.
>
> I can't imagine getting design engineering to change the design because of
> lead
> time on components. (I would love to have this much control over design
> engineering!) This lead time problem is temporary and design engineering
> would
> not want to change the design back when the problem is over.
>
> I think you need to research the problem more before you proceed with the
> expense you are talking about.
>
> Just my opinion.
>
> Tenison Stone
> Telex Communications
>
>
>
>
>
> Dominic Gagnier <[log in to unmask]> on 07/07/2000 07:51:55 AM
>
> Please respond to "TechNet E-Mail Forum." <[log in to unmask]>; Please
> respond to
> Dominic Gagnier <[log in to unmask]>
>
> To: [log in to unmask]
> cc: (bcc: Tenison Stone/BlueEarth/Telex)
> Subject: Re: [TN] Reducing package to 0402
>
>
>
> Yes, we did verify that.
>
> Delivery on resistors: 0805 is 16-18 weeks, 0402 is 6-8 weeks.
>
> We are still waiting for the caps delivery.
>
> We are going to buy a complete line of assembly equipment, I have been
> assured that placement and solder paste will not be a problem.
>
> Thanks for the info.
>
>
> P.S. if anybody has more insight, please feel free!!!
>
> Dominic Gagnier
> [log in to unmask]
>
>
> -----Original Message-----
> From: Harold Papazian [mailto:[log in to unmask]]
> Sent: jeudi, 6 juillet 2000 17:54
> To: 'TechNet E-Mail Forum.'; 'Dominic Gagnier'
> Subject: RE: [TN] Reducing package to 0402
>
>
> I would doubt that the supply of 0603 and 0402 components will be any
> better
> than that of the 0805's. I used to assemble RF modules for the cell phone
> industry, and we had a hard time finding 0402 components. Before the
> switch,
> you might want to confirm this with your vendors.
>
> Also, as the components get smaller, the solder thickness, printing
> accuracy, pad layout and pick and place component placement capability
> become extremely critical. Another concern would be the availability of
> feeders for the pick and place equipment you are currently using.
>
> Harold Papazian
>
> -----Original Message-----
> From: Dominic Gagnier [SMTP:[log in to unmask]]
> Sent: Thursday, July 06, 2000 3:11 PM
> To: [log in to unmask]
> Subject: [TN] Reducing package to 0402
>
> Hi to all,
>
> We are a medium size company doing mainly broadband RF designs
> (5MHz
> to
> 1Ghz) for the cable industries.
> Our PCBs are usualy 2 layers, components on 1 side. We use mainly
> 0805
> packages for caps and res. Price is a high concern to us.
>
> Since we notice a lot of delays in the delivery of 0805 packages,
> we
> are
> looking on switching to 0603 or most probably 0402 packages.
>
>
> Do any of you have opinions on this switch?
> We noticed that the price of parts will get higher, will there be
> major
> technical difficulties in design or assemblies of PCBs?
> Do any of you looked at or made the switch?
> Do you have any recommandations about the switch?
>
> Just trying to get more opinions on the table,
>
> Thanks to all,
> Dominic Gagnier
> [log in to unmask]
>
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