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s, probably now worth more by weight than anything else on four legs .. I went on Digikey, armed with a data sheet, and there do. NTE Equvilent NTE MOSFET N-CHANNEL DUAL GATE 20V IDSS= 5- 35MA TO CASE GATE PROTECTED VHF AMP/MIXER NTE Data Sheet. Tube or Röhre ID, Transistor, Wires and VHF shown. Radio tubes are valves.

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This is probably leftover from my war years: I used my time as a student as an example because it happened to be where I first saw an HC device. The most expensive single chip I use today is the AD But in all fairness, still datasheett dodo of a component.

Others would use the same device, because someone had chosen it.

This site uses Akismet to reduce spam. I want to search for a connector that is small with 14 pins. Epoxy-blobs, I tell you! I repaired a big brand audio Amp late last year. So that may no longer be a source, especially if you want leads. I did a little searching — Adtasheet site has a LOT of stuff!

That line was ambiguous.


I bought a few last-buys. You are commenting using your Facebook account. BTW, for anyone who has to deal with a 3n, observe every ESD precaution in the planet with that part because they are extremely susceptible. Ahh, you can help me with building my quasi nuclear phase locked loop synthesized equalizer. Not all markets are like this. Now all gone, the average cellphone today has no useful parts. Most of what Burr Brown was making was carried over to AD with nary a change in part number.


Circuits in the maker and hobbyist arena have a nasty habit of sticking around, regardless of how good they are. Learn how your comment data is processed. But a cheap opamp was the same part.

NTE Equivalent NTE MOSFET N-CHANNEL DUAL – Wholesale Electronics

I only buy 1 nF, 10 nF, nF etc. The WWW allows us to find what we need in short order, and the miracle of global distribution means that we can have it delivered within 48 hours almost wherever we live.

You moved further into the hobby and learned where you could substitute parts, you datasheer to know the familiar solid 400673 devices so datasjeet knew that diode was germanium and needed germanium, but that small NPN signal bipolar transistor in an audio oscillator could be just about any small signal transistor, so long as it was NPN, and even then a PNP could often work as long as you made adjustments.

People probably specify old components because. But searching for cow brings up an equally useless list!

But then again the young generation have opportunities we never came near. Pocket money single board computers with real power and easy interfacing.

Rochester electronics is one such place that will supply parts albeit expensively until the cows come home. I use HC parts as level translators with mixed 3v3 and 5v logic parts because there a good cheap option and do the job well. The hobbyist, like the supplier, could keep a limited selection around, yet build anything within a certain 40763 of specs. I used it a fair bit.

40673 MOSFET. Datasheet pdf. Equivalent

Cordless phones have moved up in frequency, and are using larger scale integration, a lot less useful for reusing the parts. How times have changed.

Unless you want to, that is. Definitely not for new in-production designs. I thought someone kept making germanium, but it may be as much as twenty years since I heard that. Redesigning to remove obsolescent components means going back through FAA certification. We knew by heart what each device was capable of, and we eagerly devoured each new tidbit of information as it arrived.


These were balanced mixers, the extra transistors irrelevant because it was in an IC. So I hope that other manufacturers will extend their manufacturing in such a manner.

The same thing happened when AD acquired Burr Brown. By comparison, nowadays we can quickly buy almost any device or component in production from a multitude of suppliers. The big retailers still have catalogs.

Nobody ever got fired for buying IBM, they say, but perhaps they should be fired for specifying an AD logarithmic amplifier in an amateur radio power meter. Transistors came along, and early shortwave radios were often lousy, the bipolar transistors overloaded too easily. They contained significant excerpts from semiconductor data sheets, and we read their wealth of information from dtasheet to cover. You are commenting using your Twitter account.

Same goes for capacitors: The 45 dB range 8 bits in voltage devices are dirt cheap and super common. An Apple I replica like the Mimeo 1 needs old logic chips for artistic purposes.

Datqsheet there are components for which there are no perfect replacements. No, I think gate devices are old hat now, better use a gate one…: It completely fails at about 70MHz. I would say every through-hole part in the world is on the verge of being eliminated.