Back when I was a kid and doing a lot of experimenting, I would sometimes build 
a transistor based project.  I was comfortable with tube circuits but never 
with anything solid state.  One fear I had was destroying transistors with heat 
from a soldering iron.  I was taught to always use a heat sink on the leads 
between the soldering point and the device to protect the transistor or diode 
from the heat.

Then, I left electronics and experimentation.  I have this big gap dating 
between 1967 and 2008.  In 2008 I built my first kit since those days of the 
early to mid 1960s.  In building this kit, the parts were all to be mounted on 
PCB with virtually ZERO room to connect any heat sink.  I used a very nice 
temperature controlled soldering iron with a recommended pencil style tip.  The 
result was that the kit worked (a small audio oscillator and amplifier).  But, 
I was fearful that I was toasting my transistors and the two ICs that were part 
of this kit.

I have read several soldering notes, including the one on Elecraft, and they do 
not specifically mention heat damage to components and what you need to do to 
avoid that sort of thing.  They may hint at it though by recommending the 
temperature controlled soldering irons and things of that ilk.

So, how much danger is there in destroying ICs, transistors, and such with a 
soldering iron applying such components to a PCB or maybe even using some kind 
of ugly construction?

phil, K7PEH

PS.  Merry Christmas -- the kids and grandkids have not arrived yet this 
morning so I have time to ask questions.
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