I went on Digikey, armed with a data sheet, and there do appear I searched on “MOSFET dual gate” and RF Fets, and found a bunch. MOSFET datasheet, cross reference, circuit and application notes in pdf format. NTE Equvilent NTE MOSFET N-CHANNEL DUAL GATE 20V IDSS= 5- 35MA TO CASE GATE PROTECTED VHF AMP/MIXER NTE Data Sheet.
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Not perfect, but acceptable for a lot of uses.
Those people probably bought the kit if it was available. For me to do good work I have to have a good concept of the parts catalog and keep up with new parts from suppliers and the state of the industry.
Make a circuit with me.
MOSFET datasheet & applicatoin notes – Datasheet Archive
I appreciate your criticism not because the criticism is correct, but rather it is an accurate observation about the lack of part availability. These publications were our only window into the world of electronic components. I did a little searching — Dons site has a LOT of stuff! Does that mean everyone suddenly needs to not design with through datashedt parts anymore?
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. This all is much harder these days now that parts counterfeiting is a major issue. I guess it comes down to what you mean by replacement.
Skyworks do detector diodes that are much better than the old germanium ones. Happened to stumble across two of those in my old bag of bits datadheet the other day.
That line was ambiguous. To provide fail-proof as much as possible!
I used my time as a student as an example because it happened to be where I first mosffet an HC device. You moved further into the hobby and learned where you could substitute parts, you came to know the familiar solid state devices so you 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.
Manufacturer names and part numbers would be better. Those were big ones too.
Email required Datasgeet never made public. Thus an association was formed, when you want a quick logic function then 74HC is the modern one to go for.
MOSFET Datasheet pdf – Equivalent. Cross Reference Search
Yes, noise figure factored in, at least if you were doing something on VHF or higher. As a mixer with LO input: Which exactly are the parts that have superseded the 74HC? If HC does your job then of course, use it.
Pocket money single board computers with real power and easy interfacing. Compare that with some power mosfets that seems like if you breathe on them wrong they will expire. Inverters are a percentage of the hardware cost of a PV installation, and getting that price down DOES directly correlate into more rooftop solar. Digikey is one of the better ones, but still inadequate.
Then there are the truly weird parts that may not see the light of day again.
The Curse Of The 40673: Zombie Components That Refuse To Die
I think TI has it right and they recognized where they needed to be with things. Definitely not for new in-production designs. Just an example off the top of my head, nothing against AD parts in general: Because even today, thirty years after the shuffled off this mortal coil, you can still find people specifying it.
You are commenting using your Facebook account. The most commonly seen alternative NE is probably equally suitable, but a bit more expensive. Most of what Burr Brown was making was carried over to AD with nary a change in part number.
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