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Beware of counterfeits 2N2219As
Some of you guys may get a chuckle from this, but I tried swapping some of these into my uBitx and never really got them to work. Didn't think too much of it and moved on.?
I'm working on some circuits and I'm trying to do a test to see where they saturate out. The meter I have on the base goes backwards, so I'm like what's going on here. Stuck one on the checker. Then I stuck the rest on the checker. They're PNP! Last I checked the datasheet says that 2N2219s aren't PNP.? These are SGS Thompson marked, 2N2219A H1223. Guess I should stick to the NTEs I was buying. |
Why are they so costly? The 2N2219s are about 9 dollars on Mouser. - f On Sun, Nov 19, 2023 at 9:14?AM AC9QC <aunderwoodii@...> wrote: Some of you guys may get a chuckle from this, but I tried swapping some of these into my uBitx and never really got them to work. Didn't think too much of it and moved on.? |
No chuckle here.... I ran into that building guitar pedals. The ic's I bought were labeled MN3007 which are kinda hard to get and expensive. But they?
ended up being a MN3207 which does pretty much the same job, but has a different pin out. That was a real head scratcher for me considering i'm not? a real genius with electronics to start with. 73's Dave K0DLP |
I've been playing around with the 2N5109 substitute NTE278. Solid State Inc is selling the 2N2219s via Digikey Marketplace for .50 each in 10 packs. They're a bit proud of shipping, but still. I got the Ebay transistors as a "while you were at it" item because I was getting some other parts from a seller so I got free shipping.
The NTE224s are available for .21 each and are rated as a 10W part. They were CB finals, the catch is you have to buy 50! I ordered a lot, curious to see what they do. I think a lot of it is we are having to go to secondary manufacturers of these parts since companies like Motorola, Toshiba etc. have consolidated the lines. Solid State Inc. seems a lot along the lines of NTE, producing or having produced parts that are now more obscure and substitutes for other parts. |
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