How CAN you have a vertical surface in space?
Brian
Gary Bremer wrote:
> Where is it stated that the conductive pattern can not have any exposed
> copper on the vertical surfaces? Is that any empirical data that
> supports a failure mode if there is exposed copper on the vertical
> surfaces of a conductive pattern? I have searched MIL-STD-2000,
> NASA-STD-8739-2 and NASA-STD-8739-3 but can only find that it is
> allowed. Where I work those with PhD's worry about exposed copper on the
> vertical edges of the conductive patterns and are scared to allow to
> move forward because of possible failure modes with a deep space launch.
> For my limited knowledge of metallurgy: after copper is exposed to
> moisture and oxygen, corrosion takes place only on the surface and does
> not migrate any further. I do have access to NHB5300 to see if exposed
> copper was not allowed.
>
>
> Gary Bremer
>
> _________________________________________________________________
> PC Magazine�s 2007 editors� choice for best Web mail�award-winning
> Windows Live Hotmail.
> http://imagine-windowslive.com/hotmail/?locale=en-us&ocid=TXT_TAGHM_migration_HM_mini_pcmag_0507
>
>
> ---------------------------------------------------
> Technet Mail List provided as a service by IPC using LISTSERV 15.0
> To unsubscribe, send a message to [log in to unmask] with following text in
> the BODY (NOT the subject field): SIGNOFF Technet
> To temporarily halt or (re-start) delivery of Technet send e-mail to
> [log in to unmask]: SET Technet NOMAIL or (MAIL)
> To receive ONE mailing per day of all the posts: send e-mail to
> [log in to unmask]: SET Technet Digest
> Search the archives of previous posts at: http://listserv.ipc.org/archives
> Please visit IPC web site
> http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional
> information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100
> ext.2815
> -----------------------------------------------------
>
---------------------------------------------------
Technet Mail List provided as a service by IPC using LISTSERV 15.0
To unsubscribe, send a message to [log in to unmask] with following text in
the BODY (NOT the subject field): SIGNOFF Technet
To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL)
To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest
Search the archives of previous posts at: http://listserv.ipc.org/archives
Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-615-7100 ext.2815
-----------------------------------------------------