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From: Winfield Hill on 26 Jul 2010 05:48
Jan Panteltje wrote...
>
>> On Jul 23, Jan Panteltje wrote:

>>> My old 7805 stabilizers have 1.3 mm thick copper.
>>> The new ones I bought today are 0.5 mm.
>>> The new ones you can just bent with pliers, even break the tab off.

> Here is a picture that compares this thin 7805 with a
> normal IRF TO220 MOSFET, the 7805 is on the right:
> ftp://panteltje.com/pub/thin_7805_compare_img_2090.jpg
> This is the markings it shows:
> ftp://panteltje.com/pub/thin_7805_img_2092.jpg

That looks like an ON Semi MC7805 part. They changed to
single gauge in 2006. Here's their initial 2005 notice,
http://www.onsemi.com/PowerSolutions/pcn.do?id=15018
and their final 2006 notice and publication,
http://www.onsemi.com/PowerSolutions/pcn.do?id=15550
http://www.onsemi.com/pub/docs/pcn/15550.pdf
Effective Date: 2006-07-25

As others have pointed out, many if not most companies
are offering "single-gauge" 0.020-inch TO-220 tabs now.
Hopefully this change is reflected in the price.

Here's a five-year chart of copper prices,
http://www.metalprices.com/pubcharts/PublicCharts.aspx?
metal=cu&type=L&weight=LB&days=60&size=M&bg=&cs=1&cid=0


--
Thanks,
- Win
From: Jan Panteltje on 26 Jul 2010 06:45
On a sunny day (26 Jul 2010 02:48:46 -0700) it happened Winfield Hill
<Winfield_member(a)newsguy.com> wrote in <i2jllu02uqt(a)drn.newsguy.com>:

>Jan Panteltje wrote...
>>
>>> On Jul 23, Jan Panteltje wrote:
>
>>>> My old 7805 stabilizers have 1.3 mm thick copper.
>>>> The new ones I bought today are 0.5 mm.
>>>> The new ones you can just bent with pliers, even break the tab off.
>
>> Here is a picture that compares this thin 7805 with a
>> normal IRF TO220 MOSFET, the 7805 is on the right:
>> ftp://panteltje.com/pub/thin_7805_compare_img_2090.jpg
>> This is the markings it shows:
>> ftp://panteltje.com/pub/thin_7805_img_2092.jpg
>
> That looks like an ON Semi MC7805 part. They changed to
> single gauge in 2006. Here's their initial 2005 notice,
> http://www.onsemi.com/PowerSolutions/pcn.do?id=15018
> and their final 2006 notice and publication,
> http://www.onsemi.com/PowerSolutions/pcn.do?id=15550
> http://www.onsemi.com/pub/docs/pcn/15550.pdf
> Effective Date: 2006-07-25
>
> As others have pointed out, many if not most companies
> are offering "single-gauge" 0.020-inch TO-220 tabs now.
> Hopefully this change is reflected in the price.
>
> Here's a five-year chart of copper prices,
> http://www.metalprices.com/pubcharts/PublicCharts.aspx?
>metal=cu&type=L&weight=LB&days=60&size=M&bg=&cs=1&cid=0

Thank you, amazing info.
Never too old to learn :-)
Copper is way up there today, .25 mm TO220 coming next?
I have already used the thin tabs to my advantage by bending it, to save space:
http://panteltje.com/panteltje/pic/sign_pic/sign_pic_hardware_img_2093.jpg


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