Subject: | |
From: | |
Reply To: | |
Date: | Fri, 5 May 2000 15:57:55 -0700 |
Content-Type: | text/plain |
Parts/Attachments: |
|
|
K.K.
The numbers yuour supplier mentioned are explained below:
1080 - 1.38 ozs/sq yd; thickness 0.0021 inch
1652 - 4.06 ozs/sq yd; thickness 0.0045 inch
7628 - 6.0 ozs/sq yd; thickness 0.0068 inch
Fabric weight, and thickness are of direct consideration for laminate
qualityand final properties whcih affect both electrical and mechanical
characteristics. These numbers represent the style of glass fiber, ie
diamete, number of fiber in a bundle, and weave type. Larger number mean
thicker cloth and diameter of yarn. Hope this helps.
----- Original Message -----
From: "KK Chin" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 05, 2000 11:06 AM
Subject: [TN] Prepreg numbering
> A PCB supplier recommended me to fine tune a FR-4 multilayer lay-up to
make use
> of certain popular prepreg material. He named the prepregs by numbers like
7628,
> 1652, 1080, etc. Are these numbers common acronym, or just from a specific
> manufacturer's catalog? How can I decipher these numbers?
>
> Thanks,
>
> K.K. Chin
> Artesyn Technologies,
> Fremont, CA
>
> ##############################################################
> TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
> ##############################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
following text in
> the body:
> To subscribe: SUBSCRIBE TECHNET <your full name>
> To unsubscribe: SIGNOFF TECHNET
> ##############################################################
> Please visit IPC web site (http://www.ipc.org/html/forum.htm) for
additional
> information.
> If you need assistance - contact Keach Sasamori at [log in to unmask] or
> 847-509-9700 ext.5315
> ##############################################################
##############################################################
TechNet Mail List provided as a free service by IPC using LISTSERV 1.8c
##############################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in
the body:
To subscribe: SUBSCRIBE TECHNET <your full name>
To unsubscribe: SIGNOFF TECHNET
##############################################################
Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional
information.
If you need assistance - contact Keach Sasamori at [log in to unmask] or
847-509-9700 ext.5315
##############################################################
|
|
|