Eurocard question...

On a typical 3U eurocard style module, does the front panel sit flush 
against the PCB or out a bit??? I'm trying to work out where to put the 
front panel mounting holes.

i.e.

             | |
           ->| |<- 4.0mm
             | |
                 ++
---------------. ||FP
 PCB           | ||
            +----+|
            |O   ||  --/--
            +----+|    |
               | ||    |
               | ||    |
               | ||   88.9mm
               | ||    |
               | ||    |
               | ||    |
            +----+|    |
            |O   ||  --/--
            +----+|
               | ||
...............| ||
                 ++
             |   |
           ->|   |<- 6.2mm
             |   |


OR


                 ++
-----------------||FP
  PCB            ||
            +----+|
            |O   ||  --/--
            +----+|    |
                 ||    |
                 ||    |
                 ||   88.9mm
                 ||    |
                 ||    |
                 ||    |
            +----+|    |
            |O   ||  --/--
            +----+|
                 ||
.................||
                 ++
             |   |
           ->|   |<- 6.2mm
             |   |


Any resources on all the nitty gritty aspects of eurocard standard would be 
appreciated..

Thanks
Ross 

Ross Marchant schrieb:

> On a typical 3U eurocard style module, does the front panel sit flush 
> against the PCB or out a bit??? I'm trying to work out where to put the 
> front panel mounting holes.

It is out a bit.

Look at
<http://www.fischerelektronik.de/fischer/uploadfischerfcase/Fischer/N.4.1.U.2.4.pdf>
for an example. The holder VS1 conforms to the standards.

You need two holes at 99 mm distance, 3.8 mm from the edge of the board
(6.1 mm - 2.3 mm).

Take care that even though the holes in the front panel are at 88.9 mm
distance, the distance of the holes in the board is 99 mm.

> Any resources on all the nitty gritty aspects of eurocard standard would be 
> appreciated..

Look at the catalogs of companies providing 19" racks and components.
The website of Fischer contains much detailed information, and I assume
other makers also provide comparable data.

-- 
Dipl.-Ing. Tilmann Reh
http://www.autometer.de - Elektronik nach Ma&#4294967295;.