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Reply To: | TechNet E-Mail Forum. |
Date: | Wed, 18 Feb 1998 21:08:43 +0800 |
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From ECI represented by WKK in Singapore .
> Can somebody tell me where I can get a supplier of SERA equipment?
>
>
>______________________________ Reply Separator
_________________________________
>Subject: Re: [TN] ORGANIC COATING(PRE-FLUX) THICKNESS MEASUREMEN
>Author: "TechNet E-Mail Forum." <[log in to unmask]>, at corp
>Date: 2/15/98 8:13 AM
>
>
>At 18:43 14/02/98 +0800, you wrote:
>>Dear Taegon Lee ,
>>
>>
>> It is actually quite simple . Dissolve the organic coating in alcohol ,
>> ethanol and measure the coating thickness with spectrophotometer at a
>> particular wavelength recommended by the chemical supplier . Correlate
>> the reading with the mathematical calculation which I believe the
supplier
>> would have .
>>
>> Thanks .
>>
>Just short comment :
>For such method You have to know the exact area covered by OSP . Beside of
>it , the result will be average , without differentiation between surface
>and PTH .
>We are using SERA equipment , but : the measurement is time consuming and we
>are not sure about corelation between this method and spectrophotometric
>method .
>Regards .
>Edward Szpruch
>Eltek Ltd - Israel
>Tel 972 3 9395050
>Fax 972 3 9309581
>E-mail : [log in to unmask]
>
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Richard Lim
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