"Standard" (by which I mean we at least have the laminate part numbered)
thicknesses for us in that range would be either .042" or .047". But it
will vary from material supplier to material supplier.
Mike McMaster
RF Product Engineer
Merix Corporation
503-992-4263
> ----------
> From: Marsico, James[SMTP:[log in to unmask]]
> Reply To: TechNet E-Mail Forum.;Marsico, James
> Sent: Friday, February 13, 2004 4:19 AM
> To: [log in to unmask]
> Subject: Re: [TN] FR-4 standard thickness
>
> Okay... let me rephrase my question. What would be the most common
> laminate thicknesses for double-sided FR-4 material, around the .045"
> range.
> I know that I can get .031 and .062 material, is there anything in between
> that would be considered "standard" (readily available without added
> cost)?
>
> Jim Marsico
> Senior Engineer
> Production Engineering
> EDO Electronics Systems Group
> [log in to unmask] <mailto:[log in to unmask]>
> 631-595-5879
>
>
> -----Original Message-----
> From: Scott B. Westheimer [SMTP:[log in to unmask]]
> Sent: Thursday, February 12, 2004 7:33 PM
> To: [log in to unmask]
> Subject: Re: [TN] FR-4 standard thickness
>
> Roger,
>
> "Standard" means different things to different people. IPC does
> not
> specify
> standard thickness for double sided or multilayer PCB's, that is
> left up to
> the product designer to meet their product fit, form and
> functions
> needs.
> What is normally considered is material availability as a industry
> standard.
> Certainly 0.062" thickness, in a lot of cases is used for double
> sided and
> boards are designed around that thickness. However some designs
> and
> products
> can not be that thick and therefore other material needs to be
> used.
>
> Scott Westheimer
>
> Colonial Circuits
> ----- Original Message -----
> From: "Roger Stoops" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, February 12, 2004 5:18 PM
> Subject: Re: [TN] FR-4 standard thickness
>
>
> Okay, I have a "newbie" type of question:
>
> What are the "standard" thicknesses for double-sided boards?
>
> And then the type of questions I ask when it's been a rough week:
>
> Who determines the standard? Has IPC determined a standard?
>
> I would like to know so I can tuck it away in my quickly growing
> files of
> pcb flotsam and jetsam...
>
> Have a good one! (Time to call it a day)
>
> Roger M. Stoops, CID+
> Trimble Navigation Ltd., Dayton, OH, USA
> Ph: +01 937.245.5288
> Fax: +01 937.233.7511
>
>
> -----Original Message-----
> From: TechNet [mailto:[log in to unmask]]On Behalf Of Scott B.
> Westheimer
> Sent: Thursday, February 12, 2004 3:48 PM
> To: [log in to unmask]
> Subject: Re: [TN] FR-4 standard thickness
>
>
> James,
>
> This is not a standard thickness if you are taking about a double
> sided PCB.
> However if it is a multilayer and depending on how many layers it
> has it is
> possible to get your required thickness. Most likely if you are
> talking
> double sided than it will either be specially made by a laminate
> manufacturer or the PCB fabricator. If the laminator makes it, it
> might be
> expensive depending on the quantity needed.. It might be best to
> allow the
> fabricator to make the material as it should cost less.
>
> Scott Westheimer
>
> Colonial Circuits
> ----- Original Message -----
> From: "Marsico, James" <[log in to unmask]>
> To: <[log in to unmask]>
> Sent: Thursday, February 12, 2004 3:04 PM
> Subject: [TN] FR-4 standard thickness
>
>
> > Good day Technet:
> > Our designers are designing a PWB using IPC 4101/24 (FR406)
> material
> that's
> > .045" thick. Is this a standard thickness that is readily
> available?
> >
> > Jim Marsico
> > Senior Engineer
> > Production Engineering
> > EDO Electronics Systems Group
> > [log in to unmask] <mailto:[log in to unmask]>
> > 631-595-5879
> >
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