In response to the original inquiry placed through Mike Buetow, a 
     manager in our Materials and Processes Laboratories has forwarded the 
     included response.
     
    
     *****************************************************
     Name:      David T. Novick
     Internet:  [log in to unmask]
     Phone:     714/762-5522
     Fax:       714/762-2415 or 714/762-4493
     *****************************************************
          
     
______________________________ Forward Header ________________________________
> Subject: Re: long-term storage of DIPs
> Author:  Leonard R. Enlow at RI_ANA_CC1
> Date:    2/15/96 1:49 PM


> Yes the plastic needs special handling.  Refer to IPC-SM-786 "Recommended 
> Procedures for Handling of Moisture Sensitive Plastic IC Packages".  Prior to 
> using the parts after they have been stored for a long time, bake them for 24 
> hours at 125C.
> Len Enlow, Rockwell - Anaheim

******************************Original Inquiry********************************

>> We have a member who is specifying a large number of a soon-to-be 
>> discontinued plastic DIP IC. These parts will then be stored up to two 
>> years at their facility.
     
>> His concern is with handling of these parts, particularly how to store 
>> them (vapor barrier bags, for example?). He is well aware of the 
>> precautions necessary for SMDs, but doesn't know whether these apply to 
>> DIPs too. Any advice?
     
>> Mike Buetow
>> IPC Technical Staff