Find great deals for RCA Dual Gate MOSFET N Channel To Shop with confidence on eBay!. In searching for what SMT devices are out there that have specs like the , I found the BFWR, a dual-gate MOSFET made by NXP. Beim Dual-Gate MOSFET (RCA) sind die Gate-Anschlüsse intern durch Dioden vor Beschädigungen bzw. Zerstörungen durch statische Aufladungen.

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To that end you moxfet find more than one manufacturer of these parts that seem to have an eternal need. Transistors came along, and early shortwave radios were often lousy, the bipolar transistors overloaded too easily.

Actually what I used original was a low-noise version of the 2N something like an MPS that I ,osfet to have some of in my junkbox. In short, when we specified a component, we did so with a pretty good knowledge of all the components that were available to us. And you can go from e.

What I typically do in “dead bug” construction: So I hope that other manufacturers will extend their manufacturing in such a manner. And I love my germanium diodes — they allowed me to listen to crystal radio when electricity was out, and batteries were expensive or unobtainable. That thing is everywhere and not very many others can run off a single supply which the lm was famous for.

40673 MOSFET. Datasheet pdf. Equivalent

But what prompted this piece was a far more egregious example of an old component still being specified: Leave a Reply Cancel reply Enter your comment here That is exactly what I suspected. The BF is a current production part designed to run on 5V max 12V that can be used mosfef a lot of circuits.


Note that the NXP and Infineon parts have different misfet. Another part that came and went but in my mind at least showed fantastic promise was the tunnel diode. They are tiny, typical SMT devices. The second gate also made it easy to control the gain when used as an RF amplifier. What the full-blown rant in the previous paragraphs has been building up to is this: I personally do not understand why this part did not take off other than it is so dog mosfey hard to understand how they should work!

46073 45 dB range 8 bits in voltage devices are dirt cheap and super common. But searching for cow brings up an equally useless list!

NTE Equivalent NTE MOSFET N-CHANNEL DUAL – Wholesale Electronics

OK, maybe germanium diodes are an edge case and the examples above have a radio flavour, but you get the picture. And, the noise figure is aobut 1. Always wanted to play with a cascode amplifier. Most of what Burr Brown was making was carried over to AD with nary a change in part number.

Seriously, they made a chip just for that. Big paper-bound books the size of telephone directories were our only window into the exciting world of electronic components. If HC does your job then of course, use it.

Sometimes there are components for which there are no perfect replacements. So you take your 5-year guaranteed availability promise if you even get one, be grateful as hell for it — yes sir, very well sir, thank you sir — and call it a day. Does that mean everyone suddenly needs to not design with through hole parts anymore?


I only buy 1 nF, 10 nF, nF etc.

Someone would pick a device based on specs or availability, and 4063 about the project. Those were big ones too. I used my time as a student as an example because it happened to be where I first saw an HC device. It would be nice to make such a simple choice but in reality there are many times that you have to support 5 Volt systems.

Compare that with some power mosfets that seems like if you breathe on them wrong they will expire.

Another example is the famous and storied 2n transistor made by Central Semi. Because radios are now becoming all microprocessor and nothing else, does that mean that someone should stop designing mixers using transistors?

There are markets where product life expectancy and maintainability are more of concern and this introduces some other dynamics. Because even today, thirty years after the shuffled off this mortal coil, you can still mosfeh people specifying it. Not all markets are like this.