[VicPiMakers Projects] A possible way to overcome SOT23 sizes

[George Bowden]

If the epoxy is a thin enough layer, that method works ok, and keeps the
parts in place.  Soldering is another matter.  I need the gold standard in
soldering tips, a steady hand, and lilliputians to do the work.
By the way, I did find To220 parts, so I think I'll switch to them...
Nothing in between To220 and SOT23 in size, which is a shame.
I am beginning to think SOT23 can only be soldered by robots.

On Sat, Jun 19, 2021 at 10:42 PM George Bowden <gtbowdeng at gmail.com> wrote:

> Hi all
> Not quite ready to make pcb that accommodate SOT23 devices, I made these
> breakout boards
> First I spread a thin layer of epoxy on a thin strip of aluminum (cut from
> roof flashing).
> Then I dip a finger in solder paste to pick up the SOT23 voltage
> regulators legs up, and press them lightly into the epoxy.
>
>  [image: 20210619_192414.jpg]
>
> Then i cut into the aluminum towards the ICs just enough to jam 30 gauge
> wire to hold in place while I solder the wires to the IC legs.
> [image: 20210619_211401.jpg]
> To me it is frustrating that i cannot find fixed 3.3v voltage regulators
> in larger size packages with dropout voltages less than .4 volts (3.7v-3.3v
> = 0.4v)
> --
> George Bowden  250-893-7423
> Victoria BC
>


-- 
George Bowden  250-893-7423
Victoria BC
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://vicpimakers.ca/pipermail/projects_vicpimakers.ca/attachments/20210620/004a1811/attachment.htm>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20210619_192414.jpg
Type: image/jpeg
Size: 192595 bytes
Desc: not available
URL: <http://vicpimakers.ca/pipermail/projects_vicpimakers.ca/attachments/20210620/004a1811/attachment.jpg>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: 20210619_211401.jpg
Type: image/jpeg
Size: 109130 bytes
Desc: not available
URL: <http://vicpimakers.ca/pipermail/projects_vicpimakers.ca/attachments/20210620/004a1811/attachment-0001.jpg>