Hi Inge
I shall try to remember to ask about the components in Vegas, but
don't bet on it.
As regards the coating, we had a similar question posed many years
ago by an avionics manufacturer. As we considered the Tg might be too
low with HumiSeal 1B31, they tried and switched to HumiSeal 1B73.
Still an acrylic with the benefits thereof, but a slightly higher Tg.
However, IT DEPENDS™ (Cha Ching!) on the amount of particulate matter
that you are trying to resist - can the enclosure be improved? Most
coatings have, by the nature of their task, to be soft and pliable.
However, 1A20 might just do what you are looking for, but its a
******* to work with.
As for Dewey - he's by far the PUNNIEST man I know.
Kindest regards
Graham Naisbitt
[log in to unmask]
www.gen3systems.com
Phone: +44 (0)12 5252 1500
Mobile: +44 (0) 79 6858 2121
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On 6 Nov 2007, at 16:51, Hfjord wrote:
> I think D is a Deceptive rogue. Are you sure it was his credit
> card? May
> been his library id or a plastic card for an automatic car washing.
> I vote
> on D, he will play a trick on you. Have a look on your hotel bill
> before
> checking out or something like..looking forward to hear about D's
> practical
> joke.
>
> When you guys visit APEX, would you ask something for me, or maybe
> you have
> an answer already. About SMT ceramic capacitors, tantalum chip
> capacitors
> and ceramic potentiometers: what is the maximum-number-of-temp-cycles
> specification that exists for -40/+125 Centigrades? We need test
> much, much
> more than 500 cycles.
>
> That was one question, the other one is this: what is the 'best'
> conformal
> coating to avoid dust and particles to stick in the coating's
> surface after
> long periods in +50 Centigrades ambient? We use an acrylic coating at
> present, good in most aspects, but after long exposure to dusty and
> hot
> environment, the coating surface can be used as a scotchbrite, to
> use an
> exaggeration. Especially sand particles are hard to remove.
>
> /Inge
>
> -----Ursprungligt meddelande-----
> Från: TechNet [mailto:[log in to unmask]] För Graham Naisbitt
> Skickat: den 6 november 2007 12:51
> Till: [log in to unmask]
> Ämne: Re: [TN] [NTC] Dewey and Graham
>
> It's my dry sense of humour!
>
> Anyone care to guess the odds on my meeting Dewey at APEX in Las
> Vegas and being able to sign the bar bill using his credit card?
>
> It's happened before....
>
> Graham N
>
>
>
> On 5 Nov 2007, at 14:02, Whittaker, Dewey (EHCOE) wrote:
>
>> Admit it; I'm finally getting to you. From the superfluous
>> soliloquy on
>> the solderability question to the succinct and monosyllabic answer on
>> cure.
>> Dewey
>>
>> -----Original Message-----
>> From: TechNet [mailto:[log in to unmask]] On Behalf Of Graham Naisbitt
>> Sent: Thursday, November 01, 2007 10:45 AM
>> To: [log in to unmask]
>> Subject: Re: [TN] curing my conformal coating
>>
>> Hi Graham
>>
>> No.
>>
>> Kindest regards
>> Graham Naisbitt
>>
>> [log in to unmask]
>>
>> www.gen3systems.com
>>
>> Phone: +44 (0)12 5252 1500
>> Mobile: +44 (0) 79 6858 2121
>>
>>
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>> ext.2815
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