Ed Cosper wrote:
>
> Hi all,
>
> Can someone tell me the time frame when surface mount technology started being used in production. this to settle a friendly debate, sort of  a memory challenge  you might say.  I don't seem to recall seeing SMT pads on boards before 1982-84 time frame ( maybe even later) . A friend of mine seems to think they where in use in the 70s. Fact is I really don't know when they started showing up on designs.  God I think I losing it!  Must be getting old...hehe..
>
> Anyway.... Any help would be appreciated.
>
> Ed Cosper
>
> ################################################################
> 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 web site (http://jefry.ipc.org/forum.htm) for additional information.
> For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
> ################################################################

Ed - The Japanese first used SMT in full production in 1977. I myself
first became involved in SMT in 1979, and we produced the first
production PC Boards (mostly on polyimide) in 1980. Initially, we used
(2) leadless ceramic chip carriers and some chip resistors. The initial
production runs were double-sided reflow with one LCC on one side and
the other on the opposite side. We used vapor phase for our reflow
soldering. The PC board assemblies were very high reliability since they
were used in heart pacemakers.

Ed Valentine
--

ProTronics, Inc.
861 Old Knight Road
Knightdale, NC 27545
Phone: (919) 217-0007, Fax: (919) 217-0050
http://www.protronics-inc.com

################################################################
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 web site (http://jefry.ipc.org/forum.htm) for additional information.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
################################################################