Sorry, you still haven't seized what I'm trying to say. There are so
many variables that there are no answers possible for your questions. If
I said, use such-and-such a process, materials, storage conditions etc.
and, after 15 years you found that only 5% of your products were usable,
according to YOUR defined criteria of usability (which we don't know),
my name would be mud, because you did not specify a confidence level
>0.02 under thos conditions. It wouldn't bother me, as it will almost
certainly be posthumous mud, but it may bother you! You are asking a
more or less scientific question with no scientific input data. Garbage
in=garbage out.
Brian
Reuven ROKAH wrote:
> Hi Brian,
>
> Can you inform what are your packaging mentioned parameters for 15 years?
>
> Best Regards
>
> ROKAH Reuven
>
>
>
>
> Brian Ellis
> <b_ellis@PROTONI To: [log in to unmask]
> QUE.COM> cc:
> Sent by: TechNet Subject: Re: [TN] Expiry time in vacuum package
> <[log in to unmask]
> >
>
>
> 27/04/03 01:38
> PM
> Please respond
> to "TechNet
> E-Mail Forum.";
> Please respond
> to Brian Ellis
>
>
>
>
>
> Sorry, still not good enough. What kind of vacuum package? How thick?
> How sealed? What vacuum? What conditions of storage? What component
> construction? What finish? How clean? How do you define
> reliability/functionality? What figure of confidence level? How long is
> a piece of string?
>
> Brian
>
> Reuven ROKAH wrote:
>
>>Hi Brian
>>
>>How long active component (BGA, QFP, SOP) or finish product (assembled
>
> PCB
>
>>- finish good) can be stored in a sealed / vacuum package and still
>
> having
>
>>confidence with its reliability / functionality in its system.
>>
>>Best Regards
>>
>>ROKAH Reuven
>>
>>
>>
>>
>> Brian Ellis
>> <b_ellis@PROTONI To: [log in to unmask]
>> QUE.COM> cc:
>> Sent by: TechNet Subject: Re: [TN] Expiry
>
> time in vacuum package
>
>> <[log in to unmask]
>> >
>>
>>
>> 27/04/03 12:06
>> PM
>> Please respond
>> to "TechNet
>> E-Mail Forum.";
>> Please respond
>> to Brian Ellis
>>
>>
>>
>>
>>
>>Uh? How long is a piece of string? Please be more precise
>>
>>Brian
>>
>>Reuven ROKAH wrote:
>>
>>
>>>Hello Technet forum,
>>>
>>>Pls reply how long Active component of assembled PCB / system can be
>>
>>stored
>>
>>
>>>in sealed / vacuum package before use / operating the system / component.
>>>
>>>
>>>Best Regards
>>>
>>>ROKAH Reuven
>>>
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