On Tue, 11 Nov 1997, Yvon Hache wrote:

>Hi Ray,
>When we use a HC-49 package we tie it dowm to the PCB with a bare wire
>over the crystal package and soldered on in a grounded mounting hole
>each side of the case.  Under the crystal we put a ground pad the same
>size as the crystal case.  We usually don't solder the wire to the
>crystal package itself.
>
>Hope this helps you!
>
>Yvon Hache, P. Eng.
>Concept + Inc.
>P.O. Box 1287
>Moncton, NB
>E1C 8P9
>
>Tel: 506-858-4153 ext 104
>Fax: 506-858-4075
>E-mail: [log in to unmask]
>Web: www.concept-plus.com
>
>##############################################################
>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.
>For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
>##############################################################
>
Ray,
  I haven't been on the handle end of a soldering iron for awhile but at my
former company we just got the crystals with the ground wire on them. It was
my understanding from the manufactures that it was not a good idea to solder
directly to the can. If you check with the manufacturers of the xtals your
getting, ask them if they can furnish it with the top can ground wire. This
wire is welded to the can during the manufacturing process and doesn't hurt
the xtal inside. Just my $.02 on the subject.

Scott Decker
Senior PCB Designer

AKA: PadMasterson
E-Mail: [log in to unmask]

-----------------------------------------------------------------

   ^
  ^^^    Praegitzer Design - A Division of Praegitzer Industries
 ^^^^^   7245 N.W. Evergreen Pkwy, Suite 100, Hillsboro, OR 97124
^^^^^^^  Phone #: (503) 531-2050 Ext. 1820  Fax #: (503) 531-2051
-----------------------------------------------------------------

##############################################################
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.
For the technical support contact Dmitriy Sklyar at [log in to unmask] or 847-509-9700 ext.311
##############################################################