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<div class="moz-cite-prefix">OK, here's take two.<br>
<br>
This is a general design for any SOIC8 chip with source on pins
1-3, gate on 4, and drain on 5-8. The solder pad holes are a tad
smaller than 1.3mm diameter and might support 16 gauge wire (but
for sure 18 gauge).<br>
<br>
Board image and schematic pdf: <a
href="http://triembed.org/lib/PowerFetSOIC8-1">http://triembed.org/lib/PowerFetSOIC8-1</a><a
href="http://triembed.org/lib/IRF6201-20150624-BRD.png"></a><br>
<br>
(Eagle <a
href="http://triembed.org/lib/PowerFetSOIC8-1/PowerFetSOIC8-1.sch">schematic</a>
and <a
href="http://triembed.org/lib/PowerFetSOIC8-1/PowerFetSOIC8-1.brd">board</a>
files for review)<br>
<br>
If nobody sees a problem I'll upload this and have some made and
test them, hopefully before the next meeting. As soon as they do
test out I'll put the files in the "shared" area at OSH Park. As
things stand if I did the arithmetic right the bare boards will
cost 41 cents each.<br>
<br>
What about using GitHub for a library? Actually, let me restate
that. No way, no how will the TriEmbed web site be suitable for
holding a library for multiple reasons. :-)<br>
<br>
Here are some notes about this board:<br>
- I just picked the first component file with the right pinout
that I found. I double checked that the IR part doesn't have a
creative package size. I'll cut over to Chip's library if I have
to spin this. (I did this work yesterday morning but couldn't get
the "publishing done" until today. "bread and butter")<br>
- I wish I knew how to cause the top polygon flood to go right
around the header and pad connections instead of having the three
or four traces connecting. What is the rationale for these traces
vs just connecting the entire circumference??<br>
- The bottom of the board is marked with "TriEmbed", "PowerFet",
and "2015". The Creative Commons license is about the notion that
no license is worse than having a license and attribution helps
keep the Internet sane(ish).<br>
<br>
-Pete<br>
<br>
<br>
On 6/23/2015 3:52 PM, Shane Trent wrote:<br>
</div>
<blockquote
cite="mid:CAAFjd3ps+0LewCRG17EnKu1MqksoPiXDE0ank8Cj3sB0MVN4SQ@mail.gmail.com"
type="cite">
<div dir="ltr">Pete,
<div><br>
</div>
<div>I like the board. I think a library of helper boards could
be helpful for prototyping. The engineers at Pololu have the
best examples I have seen for high-current PCB layout with
surface mount MOSFETS. This board uses SOIC8 transistors in a
motor driver H-bridge rated for 18 volts and 15 amps. I like
their multipurpose details on the high-current terminals. They
use all the copper they can for the terminal pads while
allowing the use of screw terminals or direct soldering of two
different sizes of wire. Beautiful design. </div>
<div><br>
</div>
<div><a moz-do-not-send="true"
href="https://www.pololu.com/product/755">https://www.pololu.com/product/755</a><br>
</div>
<div>Top image - <a moz-do-not-send="true"
href="https://www.pololu.com/picture/view/0J1025">https://www.pololu.com/picture/view/0J1025</a></div>
<div>Bottom image - <a moz-do-not-send="true"
href="https://www.pololu.com/picture/view/0J1026">https://www.pololu.com/picture/view/0J1026</a></div>
<div><br>
</div>
<div>Shane</div>
</div>
<div class="gmail_extra"><br>
</div>
</blockquote>
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