With "exposed" gold ring presented to me by "dear sir"? No problemo...
NTC
jk
>-----Original Message-----
>From: TechNet [mailto:[log in to unmask]] On Behalf Of
>Barry Gallegos
>Sent: Friday, July 18, 2003 9:13 AM
>To: [log in to unmask]
>Subject: Re: [TN] Exposed basis metal
>
>
>Now, Now Joyce.
>One could imply by your response that you take offence.
>
>BG
>
>-----Original Message-----
>From: joyce [mailto:[log in to unmask]]
>Sent: Friday, July 18, 2003 6:05 AM
>To: [log in to unmask]
>Subject: Re: [TN] Exposed basis metal
>
>
>I guess I should wait until the "dear sir" answer it
>officially. Here is my un-official answer based on my understanding:
>
>Exposed copper on your roof will soon be green - corrosion
>Exposed solder, tin/lead HASL pad just like your old old
>copper water pipe used to solder together - much less
>corrosion Exposed gold, silver (hopefully, not really pure,
>add some other stuff)
>- much much less corrosion = that is why your wife want it as
>ring...(of course, you can put a copper ring, a solder ring
>and a gold or silver ring on someone's finger and wait for few
>years see what happened... Same thing!) I would be very upset
>if someone give me a copper ring as a body pH tester.....
>
>"Dear Sir" should give you better answer... For sure!
>
>jk
>
>>-----Original Message-----
>>From: TechNet [mailto:[log in to unmask]] On Behalf Of August
>>Chang
>>Sent: Friday, July 18, 2003 7:12 AM
>>To: [log in to unmask]
>>Subject: [TN] Exposed basis metal
>>
>>
>>Dear Sir,
>>
>>We bought one copy of IPC-A-610C, January 2,000 supersedes rev:B, Dec
>>.1994. I have got one simple question, but need your clarification to
>>see if my understanding is correct?
>>
>>In section 6.5.2 Exposed basis metal, Figure 6-41 shows a not 100%
>>wetted pad on PCB land area, it only about 50% in my point of view.
>>
>>Does this mean that the exposed base metal in unsoldered areas should
>>be considered normal as shown in the photo of Figure 6-41,
>just because
>>it is OPS coated PWB. If so, would you also tell me why?
>>
>>I would appreciate it if you could answer me ASAP.
>>
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>
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