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<p>Keep in mind that diodes are like transistors and are extremely
temperature sensitive. All it takes is something like breathing on
them, furnace comes on or just walking by them and moving air
around and you'll see differences.</p>
<p>When I match transistors I put them in the tester, cover them
with a cloth to isolate them from air currents, go away or do
something else for a couple of minutes and then do a reading.</p>
<p>Whether or not you need to match depends on what you are using
them for.<br>
</p>
<p>Happy testing.<br>
Jay S.<br>
</p>
<div class="moz-cite-prefix">On 5/8/2020 1:39 PM, Didier Leplae via
Synth-diy wrote:<br>
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<blockquote type="cite"
cite="mid:412509464.238300.1588970342195@mail.yahoo.com">
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<div dir="ltr" data-setdir="false">I had been meaning to send an
update on this, btw. I got a better DMM and the results do
seem to make more sense, although it is still a bit confusing
ie, if I measure some diodes and come back to measure the same
diodes a bit later, the results are a bit inconsistent. So, it
seems having a good DMM is critical and I think it is probably
best to match diodes that were tested closely together in
time. </div>
<div dir="ltr" data-setdir="false"><br>
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<div dir="ltr" data-setdir="false">I also think think that these
4148 silicone diodes which are from the same batch are very
closely matched to begin with, so, not sure how much it
matters. </div>
<div dir="ltr" data-setdir="false"><br>
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<div dir="ltr" data-setdir="false">I certainly get the argument
that matching may not be necessary, but good to know how to do
it if you want to, I think.</div>
<div><br>
</div>
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