Hi Ralph,

This is not a commercial for them, but we have used some of the Ablestick
thermally conducting, electrically insulating prepregs to an advantage in the
past for some  boards with Hi-Powered devices. I believe the pre-pregs contain
Aluminum Oxide as a filler and thermal conductor. There are also others in the
market place.

I hope this helps,

Les Connally
>  From: "Vaughan, Ralph H" <[log in to unmask]>, on 7/1/98 5:41 AM:
>  Dear PWB fab guys,
>
>  Can you provide any news, good or bad, on material used in boards to
>  help move heat away from hot parts?  We have tried the standard methods
>  of leaving unused copper in the board rather than etching it away, and
>  using thermal pads under the parts, but my designers think they need
>  more thermal conduction through the pwb.  If anyone has any experience
>  with the thermally conductive pre-pregs, or any other similar material,
>  I would appreciate your thoughts.
>
>  thanks
>
>  Ralph Vaughan
>  Boeing-Atlanta
>
>  ################################################################
>  TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section
>  for additional information.
>  For technical support contact Hugo Scaramuzza at [log in to unmask] or
>  847-509-9700 ext.312
>  ################################################################
>
>

################################################################
TechNet E-Mail Forum 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's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################