Are you running a high volume of these moisture sensitive parts?
Are you a high output facility?
During our BOM scrub we will put in the Moisture Sensitive Class Level.
This is usually the indicator to our process engineering group. We normally
flag this at our NPI meeting also. This will allow the process engineer to
prepare the documentation as needed. In most cases, we don't need to go
into extensive documentation for class 1-3 sensitive components. Like most,
we control the component sensitivity with specific labels. Maybe specific
notes on the documentation at certain test/inspection levels. However, once
we hit Class 4 and above, the documentation becomes a little more intense.
We generally put the time frame of the component life and its level of
sensitivity on all of the Manufacturing instructions. This becomes visual
to everybody in the shop that this is urgent and needs particular care to
get through reflow/wave stages in a quick and efficient manner. It is also
fair to say that we are not a huge facility either, so it may depend on how
you route your parts, how many lines your have, set-up time and so on…
Also, if you are in a facility that is multi-lingual, symbols are great
indicators and can get rid of a lot of verbage.
Hope this helps!
Realchunks.
On Sun, Jun 8, 2008 at 2:06 PM, - bogert <[log in to unmask]> wrote:
> On new drawings have engineering add a note to the BOM for each part that
> is moisure sensitive. At receiving inspection add instructions to folks to
> leave moisture sensitive parts in the original bags until they are dispersed
> to the floor.
>
>
> From: "Juan T. Marugán" <[log in to unmask]>
>> Reply-To: TechNet E-Mail Forum <[log in to unmask]>, "Juan T.
>> Marugán" <[log in to unmask]>
>> To: [log in to unmask]
>> Subject: [TN] Moisture sensitive componentes & manufacturing documentation
>> Date: Thu, 29 May 2008 05:19:46 -0500
>>
>> Good morning ALL from Spain.
>>
>> We are starting to use moisture sensitive components in our boards (class
>> 3).
>>
>> It is clear that these components shall be handled iaw J-STD-033, but we
>> have a concern: how to point out in the manufacturing documentation that
>> there are moisture sensitive components in the PWA. This information is
>> essential to the process engineering people to prepare the manufacturing
>> instruction sheets.
>>
>> In a first approach, we have thought to introduce a warning note in the
>> drawing, but we are not sure if it is a standard practice.
>>
>> If you can send your comments, I'll appreciate it a lot.
>>
>> Muchas gracias.
>>
>> Juan T. Marugán
>> Indra Sistemas SA
>> Supply Chain Management (SCM)
>> Madrid (ESPAŃA)
>>
>>
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