Date : 13/5/96 9:56 Msg From: ATUL RASTOGI Steve, Keeping RH to less than 30% in your environment will lead to Static charge build up.Better method will be to store components after opening the seal either in a storage oven at a temp of 50 to 60 deg C(if components are in trays) or in a dry cabinet at RH less than 20%(if components are in tape).This way components can be stored for a long time without requiring baking.You should use opened components within a limit ,as defined in IPC SM 786A, on your line or put them in storage oven or dry cabinet.However you should ensure that total exposure time does not exceed the limit otherwise you might have to bake the components. Atu Rastogi Altos India Ltd >>>>>>>>>>>>>>> Posted: Sat, May 11, 1996 2:07 AM Msg: CJJG-2069-1466/20 From: ("RFC-822": <TechNet-request(a)ipc.org>, SITE:INTERNET) To: ("RFC-822": <steveq(a)heurikon.com>,SITE:INTERNET) CC: ("RFC-822": <TechNet(a)ipc.org>,SITE:INTERNET), AIL.EHTP/PCL Subj: Re: Humidity Sensitive parts RFC-822-Headers: Resent-Date: Thu, 9 May 1996 19:56:20 -0700 Resent-Sender: [log in to unmask] Old-Return-Path: <buetmi> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Resent-Message-ID: <"gXUvj.0.wU9.2jban"@ipc> Resent-From: [log in to unmask] X-Mailing-List: <[log in to unmask]> archive/latest/4009 X-Loop: [log in to unmask] Precedence: list Resent-Sender: [log in to unmask] Steve: I recommend that you refer to IPC-SM-786A, for specific handling issues. It does not, however, go into much detail about the broader issue of the plant itself. The 786A refers to MIL-STD-1686 for ESD control. Potential health concerns (if any) could probably addressed in the IPC forum [log in to unmask] Mike Buetow IPC Technical Staff 2215 Sanders Road Northbrook, IL 60062 P: 847-509-9700, ext. 335 F: 847-509-9798 [log in to unmask] On Thu, 9 May 1996, Steve Quinn wrote: > Hello out there. > > We are looking into the handling of our humidity sensitive parts. > We currently keep them in their sealed bags, and reseal unused parts > immediately after a build(we build very low volumes of boards per day). We > are considering controlling the environment in the room where we build, and > keeping the humidity under 30% to eliminate any moisture build up in the > parts. Do I run into other problems, such as ESD issues, and how can I deal > with those? Are there health concerns from running in too dry an > environment? Any comments would be appreciated. > Thanks. > > Steve Quinn > Heurikon Corp > > <<<<<<<<<<<<<<<