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From: DaveC on 28 May 2010 15:35
> some more sources
> http://www.satcure-focus.com/design/page2.htm
> http://www.schematicsforfree.com/archive/file/COMPONENTS/SMD%20Codebook.pdf
> http://clivetec.superihost.com/SMD_CodesT.htm

Good resources. Thanks.

> "part marking", "top code", "topcode" ,"top mark", "topmark" ,"marking" as
> synonym adjunct keywords for SMD device coding via Google

[...]

Or, in other words, a Google is only as good as the terms used. Didn't know
about "top" term. Thanks.

Dave

From: DaveC on 28 May 2010 15:35
> FWIW, a "HF" marking code identifies a Toshiba 2SC3124 NPN transistor,
> 15V, 50mA, for TV Tuner, VHF Oscillator Applications:
>
> http://www.datasheetcatalog.org/datasheet/toshiba/1264.pdf

Thanks.

> The lowercase "j" may be unrelated to the part number.

Not lowercase. Uppercase, just smaller type than "HF"

> For example, a Philips BCW89 transistor has a marking code of H3*,
> where *=p for "Made in Hong Kong", or *=t for "Made in Malaysia".
>
> http://www.nxp.com/documents/data_sheet/BCW89.pdf
>
> You may be able to discern the manufacturer, or country of origin,
> from the surrounding components. The function of the device may be
> deduced from the circuit itself. For example, is the board part of a
> tuner?

Acquisition PCB, Tek TDS420 scope. No schematics in the public domain.

Thanks again,
Dave

From: Uffe B�rentsen on 29 May 2010 07:44

"DaveC" <invalid(a)invalid.net> skrev i en meddelelse
news:0001HW.C82568ED02C8482DB01AD9AF(a)news.eternal-september.org...
>> Warning ... Do not visit the above site with javascript enabled and/or
>> an industrial strength pop-up blocker if you value your sanity (and
>> possibly your PC).
>
> Yeah, I saw that. Pretty intense pop-ups. Still, the data is worth the
> trip.

Sorry for that.
My TrendMicro took care of all that for me.



--
Uffe B�rentsen


From: Rich Webb on 29 May 2010 08:44
On Sat, 29 May 2010 13:44:54 +0200, "Uffe B�rentsen"
<leiti_NOSPAM_(a)hotmail.com> wrote:

>
>"DaveC" <invalid(a)invalid.net> skrev i en meddelelse
>news:0001HW.C82568ED02C8482DB01AD9AF(a)news.eternal-september.org...
>>> Warning ... Do not visit the above site with javascript enabled and/or
>>> an industrial strength pop-up blocker if you value your sanity (and
>>> possibly your PC).
>>
>> Yeah, I saw that. Pretty intense pop-ups. Still, the data is worth the
>> trip.
>
>Sorry for that.
>My TrendMicro took care of all that for me.

Can't blame them for trying to raise revenue, I guess. One would think,
though, that they'd turn it down a notch or two so as not to chase
people away. Or at least have dancing bears and cute puppies! ;-)

--
Rich Webb Norfolk, VA
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