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July 1999

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Subject:
Multilayer with embedded resistors
From:
"Jeremias, Michael" <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Thu, 8 Jul 1999 16:33:35 +0200
Content-Type:
text/plain
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> We are requiring a lot    30x30mm  5 - Layer multilayers   with  ca  30
> embedded resistors. 
> 
> 
> There are following questions:
> 
> R values from  68+/- n %  Ohm to 10 kOhm+/- n % 
> 
> Tolerances:n=  +/- 1% bis +/- 5%  depends of application and nominal
> value.  Lasertrimming ?  
> 
> One  resistor on top-layer is to be trimmed  under  functional test.
> Which kind of laser is  necessary for trimming? Is there  any  service? 
> 
> Is Rigid flex multilayer as an option possible?
> 
> Are there any manufacturers of pcbs, who have  experiences in tjis matter?
> Sincerely
> 
> 
> DaimlerChrysler Aerospace AG
> Verteidigung und Zivile Systeme
> Leistungszentrum Technik 
>       Elektronik
>       Fertigungstechnologie
> 
> i.A
> 
> M.  Jeremias
> 
> homepage
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> 
> 
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> 
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> 
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> 
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