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March 2004

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Subject:
From:
Graham Naisbitt <[log in to unmask]>
Reply To:
TechNet E-Mail Forum.
Date:
Wed, 10 Mar 2004 11:38:06 +0000
Content-Type:
text/plain
Parts/Attachments:
text/plain (423 lines)
Hmmm, according to Apple Mac, I can put my keyboard into the dishwasher if I
have such a spill - but am told DO NOT allow it to go through the drying
cycle as it is too hot.
--
Regards Graham Naisbitt

[log in to unmask]

Cell: 079 6858 2121
Office: +44 (0)1252 813706

Concoat Limited - Engineering Reliability in Electronics

NEW Additional Web address: www.conformalcoating.com

www.concoat.co.uk     www.concoatsystems.com


> They won't - I know from experience. But, do you want to pay $50 for a
> keyboard that will take spills, or $10 for one that won't?
>
>>>> [log in to unmask] 03/09/04 01:54PM >>>
>       Shouldn't  PWA modules be protected from any liquid? We can not
> expect a keyboard survive a coffee spill.
>       Ramon
>
>> -----Original Message-----
>> From: Randy Bock Sr. [SMTP:[log in to unmask]]
>> Sent: Tuesday, March 09, 2004 12:48 PM
>> To:   [log in to unmask]
>> Subject:      Re: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR
> Conformal Coating
>>
>> Bug juice concetrate makes a good bright work cleaner.    Turko cleaner
>> was the thing to clean with.  Mixed with water did ok.  Straight would
>> turn your hands to wrinkled prunes.
>>
>>
>>
>> Randy Bock Sr.
>> Quality Manager
>> GMS Naugatuck
>> (p) 203 720-3861
>> (f)  203 729-5397
>> (email)  [log in to unmask]
>>
>>
>>
>>
>> David Douthit <[log in to unmask]>
>> Sent by: TechNet <[log in to unmask]>
>> 03/09/2004 12:29 PM
>> Please respond to
>> "TechNet E-Mail Forum." <[log in to unmask]>; Please respond to
>> David Douthit <[log in to unmask]>
>>
>>
>> To
>> [log in to unmask]
>> cc
>>
>> Subject
>> Re: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR Conformal Coating
>>
>>
>>
>>
>>
>>
>> Ramon,
>>
>> You might be amazed at what cleaning crews use on the interior and
>> exterior of aircraft.
>>
>> David A. Douthit
>> Manager
>> LoCan LLC
>>
>> Dehoyos, Ramon wrote:
>>
>>>        Thanks for the correction.
>>>        Ramon
>>>
>>>
>>>
>>>> -----Original Message-----
>>>> From: Crepeau, Phil (Space Technology)
>>>> Sent: Tuesday, March 09, 2004 10:44 AM
>>>> To:   Dehoyos, Ramon
>>>> Subject:      RE: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR
>>>>
>>>>
>>> Conformal Coating
>>>
>>>
>>>> i think you meant type ar not ur.
>>>>
>>>> -----Original Message-----
>>>> From: Dehoyos, Ramon (NG)
>>>> Sent: Tuesday, March 09, 2004 6:08 AM
>>>> To: [log in to unmask]
>>>> Subject: [TN] FW: [TN] Pros and Cons on Type UR vice Type AR Conformal
>>>> Coating
>>>>
>>>>
>>>>        One of the disadvantages of UR coating is that it will not
>>>>
>>>>
>>> withstand
>>>
>>>
>>>> solvents. Besides  boards in  aircrafts that might be closed to the fuel
>>>> tank or in automobile  engine compartments, most boards are not in
>>>>
>>>>
>>> proximity
>>>
>>>
>>>> to fuels, acetone or alcohol. So UR is plenty good. It saves a lot of
>>>>
>>>>
>>> boards
>>>
>>>
>>>> from being damaged during rework due to the simplicity of removal.
>>>>        Regards,
>>>>        Ramon
>>>>
>>>>
>>>>
>>>>> -----Original Message-----
>>>>> From: Dehoyos, Ramon
>>>>> Sent: Tuesday, March 09, 2004 8:15 AM
>>>>> To:   [log in to unmask]
>>>>> Subject:      Re: [TN] Pros and Cons on Type UR vice Type AR Conformal
>>>>>
>>>>>
>>>> Coating
>>>>
>>>>
>>>>>        One thing to know is that AR can be coated to patch UR but not
>>>>>
>>>>>
>>> the
>>>
>>>
>>>>> other way around. Patching AR with UR creates a mix that takes too long
>>>>>
>>>>>
>>> to
>>>
>>>
>>>>> dry, stays soft. So to switch from UR to AR is recommended.
>>>>>        Regards,
>>>>>        Ramon
>>>>>
>>>>>
>>>>>
>>>>>> -----Original Message-----
>>>>>> From: - Bogert [SMTP:[log in to unmask]]
>>>>>> Sent: Monday, March 08, 2004 4:55 PM
>>>>>> To:
>>>>>> Subject:      [TN] Pros and Cons on Type UR vice Type AR Conformal
>>>>>>
>>>>>>
>>>> Coating
>>>>
>>>>
>>>>>> As a Class 3 customer we are considering mandating transition from
>>>>>>
>>>>>>
>>> Type
>>>
>>>
>>>> UR
>>>>
>>>>
>>>>> to Type AR conformal coating, to make it easier to replace failed
>>>>> components.  Are there any Class 3 users of Type AR coating?  What is
>>>>>
>>>>>
>>>> track
>>>>
>>>>
>>>>> record for using Type AR?  Are there any compatibility issues with
>>>>>
>>>>>
>>> certain
>>>
>>>
>>>>> types of solder masks?  Any input you have would help.  Another
>>>>>
>>>>>
>>> advantage
>>>
>>>
>>>>> with AR would be for returned equipment.  The OEM could remove all the
>>>>> coating from an assembly using alcohol, then perform
>>>>>
>>>>>
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