IPC/JEDEC J-STD-033 April 1999 Standard for handling, Packing, Shipping and Use of
Moisture/Reflow Sensitive Surface Mount Devices will provide this guidance.

Hardcopy cost is $20 for IPC Members

==========================================
APEX - the industry's premier trade show in Electronics
Manufacturing, March 12-16, 2000, Long Beach, California.
More information on website www.ipc.org/html/apex.htm
-----------
Jack Crawford, IPC Director of Assembly Standards and Technology
2215 Sanders Road, Northbrook IL  60062-6135
[log in to unmask]
847-790-5393
fax 847-509-9798

>>> "<Richard Tilbrook>" <[log in to unmask]> 10/08/99 02:36AM >>>
Hi,

I am enquiring into the acceptable conditions [ie. temp. and Relative
Humidity] for long term storage [ie. 8 to 10 months] of level 6 moisture
sensitive smt components.

I am aware that moisture sensitive components of levels 2 through 5 require
an RH of less than or equal to 20% RH for long term storage, but does this
apply to levels 5a and 6, or is a lower RH necessary? I ask as I have no
level 5a information to check on, and level 6 information is individual to
the component.

Thankyou for taking the time to read this,

Regards,

Richard Tilbrook,
Junior Engineer,
British Aerospace.

##############################################################
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.
If you need assistance - contact Gayatri Sardeshpande at [log in to unmask] or
847-509-9700 ext.5365
##############################################################