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From: Harry D on 18 Dec 2009 14:41
Gentlemen of this distingushed group,
How do you read labels on small ICs such as the ThinSOT or DFN packs
that are 2mm x 3mm?
Ok, I have old eyes, soldering these pups is do able but finding
pin#1 is impossible for me even using 7X eye loupe. I know JL will say
it is no problem with his $3K Mantis and others are so rich that they
hire a tech but I am not in that group. There's got to be an easier
way, say <$300.
Former member needs help;
Harry D.
From: Joel Koltner on 18 Dec 2009 14:58
"Harry D" <harryd(a)tdsystems.org> wrote in message
news:42987c77-ce23-4e80-adb8-0641bda7bebd(a)y10g2000prg.googlegroups.com...
> How do you read labels on small ICs such as the ThinSOT or DFN packs
> that are 2mm x 3mm?

I use a 10x Hastings triplett for most work, and have a 20x for really tiny
stuff.

A USB microscope (e.g.,
http://www.amazon.com/Veho-VMS-001-Megapixel-Digital-Microscope/dp/B001ACKIUO)
can also be handy.

Sometimes the labels on those small parts have very poor contrast and are
quite difficult to read even with sufficient magnification!

---joel

From: Jan Panteltje on 18 Dec 2009 15:01
On a sunny day (Fri, 18 Dec 2009 11:41:36 -0800 (PST)) it happened Harry D
<harryd(a)tdsystems.org> wrote in
<42987c77-ce23-4e80-adb8-0641bda7bebd(a)y10g2000prg.googlegroups.com>:

>Gentlemen of this distingushed group,
> How do you read labels on small ICs such as the ThinSOT or DFN packs
>that are 2mm x 3mm?
> Ok, I have old eyes, soldering these pups is do able but finding
>pin#1 is impossible for me even using 7X eye loupe. I know JL will say
>it is no problem with his $3K Mantis and others are so rich that they
>hire a tech but I am not in that group. There's got to be an easier
>way, say <$300.
> Former member needs help;
> Harry D.

Digital camera, video out, super macro, on 20 inch monitor?
From: Martin Riddle on 18 Dec 2009 15:15


"Harry D" <harryd(a)tdsystems.org> wrote in message
news:42987c77-ce23-4e80-adb8-0641bda7bebd(a)y10g2000prg.googlegroups.com...
> Gentlemen of this distingushed group,
> How do you read labels on small ICs such as the ThinSOT or DFN packs
> that are 2mm x 3mm?
> Ok, I have old eyes, soldering these pups is do able but finding
> pin#1 is impossible for me even using 7X eye loupe. I know JL will say
> it is no problem with his $3K Mantis and others are so rich that they
> hire a tech but I am not in that group. There's got to be an easier
> way, say <$300.
> Former member needs help;
> Harry D.

I use an Optivisor.
<http://www.doneganoptical.com/optivisor.php>
Get the hight power 2x or 3x lens.

Cheers



From: Jim Thompson on 18 Dec 2009 15:22
On Fri, 18 Dec 2009 15:15:52 -0500, "Martin Riddle"
<martin_rid(a)verizon.net> wrote:

>
>
>"Harry D" <harryd(a)tdsystems.org> wrote in message
>news:42987c77-ce23-4e80-adb8-0641bda7bebd(a)y10g2000prg.googlegroups.com...
>> Gentlemen of this distingushed group,
>> How do you read labels on small ICs such as the ThinSOT or DFN packs
>> that are 2mm x 3mm?
>> Ok, I have old eyes, soldering these pups is do able but finding
>> pin#1 is impossible for me even using 7X eye loupe. I know JL will say
>> it is no problem with his $3K Mantis and others are so rich that they
>> hire a tech but I am not in that group. There's got to be an easier
>> way, say <$300.
>> Former member needs help;
>> Harry D.
>
>I use an Optivisor.
><http://www.doneganoptical.com/optivisor.php>
>Get the hight power 2x or 3x lens.
>
>Cheers
>
>

That's what I have. Bought my pair around 1980. I sometimes use them
PLUS my reading glasses ;-)

...Jim Thompson
--
| James E.Thompson, CTO | mens |
| Analog Innovations, Inc. | et |
| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona 85048 Skype: Contacts Only | |
| Voice:(480)460-2350 Fax: Available upon request | Brass Rat |
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