All those resistors, capacitors, even solid state devices we use are slowly going away. The things we as builders and tinkerers need for our electronic creations, that are readily usable, and you hold in your hand without tweezers, and don't need a magnifier to see, are being replaced with surface mount devices on a bigger scale. Hopefully there will be a company or two tailored to prototypers we can get parts from if it really gets bad. There are solder station setups and techniques you can use for the SMD stuff, but on one repair job I did, and will never do again, I turned a soldering iron tip to a needle point on my lathe, and used it remove and install SMD diodes on a highly populated circuit board with a mix of component types, and through my magnifiers, it looked like I was trying to solder taxi cabs to the streets in Manhattan with an ICBM. I knew something might be up when Newark was selling the common value 1/2 watt resistors for less than one cent. Prices like $.003 were common, and I stocked up on all the values I run across in my work. A dollars worth would purchase a lifetime supply.
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Places like AliExpress.com still have plenty of thru-hole components. However, you are certainly correct that a lot fewer thru-hole components are sold, hence the supplies are drying up.
It's really simple really, supply & demand. Manufacturing SMT components is a lot cheaper than the same value component in thru-hole. Also, manufacturing a board with thru-hole components is a lot more expensive than manufacturing the same functionality using SMT components. Add to the fact that the SMT board will be much more compact, and it's clear why the industry is going that way.
@CALNNC posted:...it looked like I was trying to solder taxi cabs to the streets in Manhattan with an ICBM.
Love it, love it, love it!!
May I use this as the 'metaphor-of-the-day'???!!! Even my #10 Optivisor+loupe would be marginally useful to this old phart going-on-80 for a 'Manhattan Project' of this sort!!!
Talk about having chutzpah?!! Congratulations!!! We have today's winner (ding, ding, ding, ding, ding,.....)
BTW... AMEN!!!
Makes you wonder what today's version of the AR-15 stereo tuner/amplifier by Heathkit would look like, doesn't it?? (built if for Dad in 1968. Still works perfectly!!)
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I do fine with my ring magnifier for the SMT builds. I have limited my designs to 0603 or larger components and the pin spacing on IC's to 0.95mm spacing. The smaller stuff like TSOP packages are just too small to deal with using conventional tools, at least for me.
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In some ways it is surprising they are even still available given the pace of change in electronics.
50 years ago when I was taking High School Electronics I made it known that I would fix malfunctioning items for free. The teacher graded us if we working on stuff, rather than sitting around BS'ing (mainly talking about girls and cars). Those curcuit boards of course were all discrete components (thru-hole). Well I fixed a lot items, but the greatest number were.............8 Track Tape Players. Almost always the problem was mechanical not electronic related. Solid State electronics should last forever. For the most part the teacher won't let us work on items with Vacuum Tubes, he was afraid we would fry ourselves due to the power supplies. Plus we were being trained for the future not the past.
So decided when going on in school, it made more sense to be a Mechanical Engineer. With the solid state components who would need Electronics Engineers? Everything we needed had already been invented! (Except Flying Cars) The Cassette Decks were way better than 8 Tracks, but that was due to a change in Mechanical Design not electronics. I never have been too good at predicting the future.
@MainLine Steam posted:I never have been too good at predicting the future.
Yep, my crystal ball is pretty cloudy most of the time as well!
There are still new products that use some thru-hole components, and of course there's still a demand for components for repairs of old stuff. However, I'm sure they're fading fast, I find that I have to go overseas more often now to get some thru-hole components.
I am amazed you can still get 50 plus year old devices. TTL, CMOS, 555 timers in DIP packages, many discrete transistors like 2N2222, 2N3904/6s. For one off prototype designs, these still fit the bill.
Pete
You'll notice that the major parts houses like Digikey and Mouser have discontinued the really old stuff like plain TTL chips. However, I do notice that TI still lists the 7400 TTL family as active products, somewhat amazing.
I'm sure the ubiquitous 555 timer will outlive us all, I remember using that chip in the 70's, and I see no end in sight for it's reign.
Guys join a radio repair group online, there are many small companies still pushing out obsolete components. If I can still find brand new tubes / resistors/caps and alike it will be long after I am gone that the supply dries up. An example is the Zenith adjustable multi tap Capacitor. A company in Japan sells one, brand new production date within 2 years. Also their is a radio club (museum ) in Switzerland that specializes in American radios prints and were to by components.