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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But a cheap opamp was the same part. The datashedt, like the supplier, could keep a limited selection around, yet build anything within a certain level of specs.

MOSFET Datasheet pdf – Equivalent. Cross Reference Search

Hang on, this is Hackaday. Which I think was not particularly good.

You are commenting using your Twitter account. 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. They wanted to use what they had, or what they could scrounge. Use those Schottky diodes that arrived in the later sixties, and use four if them in a balanced mixer, often a better choice for an overload resistant mixer.

So blindly switching from HC datasheft AC is a bit dangerous. And I love my germanium diodes — they allowed me to listen to crystal radio when electricity was out, and batteries were expensive or unobtainable. I did a little searching — Dons site has a LOT of stuff!


40673 MOSFET. Datasheet pdf. Equivalent

Those people probably bought the kit if it was available. The same thing happened when AD acquired Burr Brown. BF, unless my memory fails me. Excessively frustrating… what takes seconds in a catalog takes hours on a webpage. You are commenting using your Facebook account. Fill in your details below or click an icon to log in: So that may no longer be a source, especially if you want leads.

When ICs came along, that got ddatasheet complicated, especially as time went on. The 1n34a is such a part that does not seem to see much need outside of hobbyist radio circles. The specific reason that most of your criticism is not correct is because there are some numbers and parts that are so perfect for their required design purpose that it seems more work or cumbersome to redesign using modern parts.

A bit late but anyway, a mosfet like the can be swapped with two N jfets in cascode configuration just like in these example: I appreciate your criticism not because the criticism is correct, but rather it is an accurate observation about the lack of part availability.

I use a as a mixer as it happens, and in my application you start to hear the performance tail off somewhere above 10MHz with the HC part. Thus an association was formed, when you want a quick logic function then 74HC is the modern one to go for.


_PDF Datasheet Download IC-ON-LINE

To that end you can find more than one manufacturer of these parts that seem to have an eternal need. Detector diodes have modern replacements, but power germaniums do not, and I have searched hard! Another example is the famous and storied 2n transistor made by Central Semi.

Same goes for capacitors: People probably specify old components because. I would add my own observation that if digital logic can be done with NAND or NOR gates alone, analog can be reduced to relatively few parts as well.


Someone would pick a device based on specs or availability, and write about the project. Yes, a 3v3 family is not a drop-in replacement for a 5v part. The 45 dB range 8 bits in voltage devices are dirt cheap and super common. No, I think gate devices are old hat now, better use a gate one…: A part that has been in use for a long period of datashset has proven its worth. Compare that with some power mosfets that seems like if you breathe on them wrong they will expire.