Subject: | |
From: | |
Reply To: | TechNet Mail Forum. |
Date: | Sat, 1 Nov 1997 11:09:13 -0500 |
Content-Type: | text/plain |
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Dhawan,
See below.
Bev Christian
Nortel
>----------
>From: Dhawan, Ashok[SMTP:[log in to unmask]]
>Sent: Saturday, November 01, 1997 10:45 AM
>To: [log in to unmask]
>Subject: [TN] FW: ENVIRONMENTAL CONTROL
>
>Post it again for advise on this. I wonder there are no comments on
>this?
>What kind of environmental control being exercised by PCB assembly
houses --for SMT soldering operations? Can only speak for our plant.
>Whole plant air conditioned, from receving to shipping. Do you use special
>solder pastes
-less sensitive to slumping/moisture absorption?? No, but I hear that
the Alpha Ultra 78 has very good screen life and I am sure that other
>solder paste producers can also help you out if you ask. More below.Pl do
>comment on this.
>> ----------
>> From: Dhawan, Ashok
>> Sent: October 9, 1997 12:41 PM
>> To: 'IPC TechNet'
>> Subject: ENVIRONMENTAL CONTROL
>>
>> What is kind of environmental control required for a surface mount
>> assembly area.
>> Is pre-reflow soldering operation normally enclosed in restricted
>> ambience of temp and humidity?? Yes, in our company.
>> Is there any IPC standard on facilities requirements on SMT production
>> floor?? Don't know.
>>
>> thanks in advance for all inputs.
>>
>> [log in to unmask]
>>
>
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