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Here's the Dk of several polyimide films for flex circuits:
Kapton HN 3.4
Apical AV 3.4
Kapton KN 3.6
Apical NP 3.4
Upilex S 3.5
Flex-I-Mid 3.2
Keep in mind that the Dielectric Constant changes with frequency,
temperature and moisture content for many materials.
We also have a range of high frequency materials with various
engineered Dk's listed on our Website at:
http//www.rogers-corp.com/mwu
Andy Magee - Applications Engineer
Rogers - Circuit Materials
Tel: (602) 917-5237
Fax: (602) 917-5256
E-Mail: [log in to unmask]
Website: http//www.rogers-corp.com/cmu
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Subject: Re: dielectrics for dif materials
Author: No Name::(NAMEN) at ~FABRIK
Date: 1/22/97 6:43 PM
From: No Name
Date: Wed, Jan 22, 1997 6:43 PM
Subject: Re: dielectrics for dif materials
To: asaldana; Magee, Andrew P
Dielectric Values
FR-4 = 4.8
teflon = 2.4
Polyimide = 4.3
GETAK = 3.9
On Wed, 22 Jan 1997, Armando Saldana wrote:
> attn: all in the TechNet Forum!!
>
> Can anybody out there tell me how I can
> get the dielectric values for different
> kinds of materials?
>
> FR4 = ?
> Polyimide = ?
> Teflon = ?
> Kapton = ?
> etc. = ?
>
> can i call a website or would ipc have this kind of
> information handy at all times?
>
> i need this info yesterday so anybody with
> any kind of help or hints would be greatly
> appreciated!!
>
> thanks in advance!
>
>
> Armando Saldana
> [log in to unmask]
>
---------------------------- Forwarded with Changes ---------------------------
From: No Name::(NAMEN) at ~FABRIK
Date: 1/22/97 6:43PM -0800
To: Andrew P Magee at Rogers-MCD
*To: ASALDN at ~FABRIK
Subject: Re: dielectrics for dif materials
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