All Activity

Ooof! A bit rich for my blood lol. My copy is below: https://www.discogs.com/release/11978254-Clipse-Lord-Willin (which I thought was quite fancy, apparently not enough haha)

Nice! I approve of your taste in Virginia-based "former" cocaine dealing rapping duos. Also, do you know about this? 7" 45 box set of Lord Willin'. Only 1000 copies made. I linked it to my buddy who turned me on to Clipse from like, day 1, and he wound up buying it, not realizing that I sent him the link I was going to buy it from. I got it elsewhere, but glad it wasn't as much as the ebay listing https://www.ebay.com/itm/276301100974?chn=ps&mkevt=1&mkcid=28&google_free_listing_action=view_item&gQT=1 Also, can you imagine dropping this 45 whenever you want? https://www.instagram.com/reel/DLhu9gosH0D/

You haven’t answered my question how you determined that the part is a fake (other than from the appearance).

Yeah I’ve been listening to the clipse non stop. Was a fan of their first album and followed Pusha T on his solo stuff

Sure, could be but there seems to be something going on as one user was apologizing to Stax saying "this fixed the issues he was having" according to google translate. For me the fit is pretty bad and the 007Mk1 pads made it even worse.

Maybe they designed it that way from the very beginning, thinking people would figure it out on their own. And then, after many years, they suddenly realized that no one actually knew why they made the earcups rotate.

LOVE this group, and they're finally back together after a decade and change break. They dropped a brilliant Tiny Desk Concert; I may need to watch it again.

If you use them in a constant current source, the Vbe-Ic curve (figure 10) is probably more important than hFE. If you don’t have ways to measure, pick two that are closest in hFE for each channel and hopefully they come close in other parameters as well. If you ask me, I always order at least 2x more than the BOM qty and match them on a curve tracer at or near the actual operating point. The bigger the pool, the more likely you’ll end up with well matched pairs.

In the batch that MOUSER sent me, the measurements were made at normal room temperature. One row of transistors had hFE 341, another - 315, the third - 295 and the fourth - 245. Which hFE would you use first?

If I were to choose from a well executed raster image logo in the marking and a badly burned vector one, I’d opt for the latter in a heartbeat. I’ve explained the reason and would not repeat here. For the hFE, you need to know the Ic and Vce your testing was performed at, in order to make a meaningful comparison with the numbers in the datasheet. If you don’t know, measure them. The datasheet says minimum hFE is 170 at 25 degree C, Ic=-1ma and Vce=-5V. From the chart you can see hFE goes slightly up from Ic=-1ma to -10ma and then to -20ma before it starts to drop after Ic=100ma (the red line). If your sample tests at hFE=150 between Ic=-1ma and -10ma, it’s below spec and would be a reject by the factory. You can see the red line is well above 200 and approaching the 300 line, so 340 is not a surprise. +/-20% is considered normal variation. Why would they specify min hFE at only 120 at Ic=-20ma? It could be a simple mistake, or indicating that the hFE could drop as early as Ic=-20ma, unlike what the typical curve suggests, which is a bad news for circuit designers (not applicable for our applications). Nevertheless, sandbagging would not get them into trouble anyways, if you know what I mean. I could go on and on and brag about my affiliation with the semiconductor industry, but let’s keep the personal information out of this discussion. If you think my comments make sense, think about it. Otherwise, just take it with a grain of salt.

when I bought in 2023 in Digi c2m1000170, they wrote that it was made in China. Now they don't have this model. I made a purchase on Aliexpress, alas, a fake arrived. I tried to make a purchase from another seller on Ali..., and to my surprise, transistors suitable for use arrived. I have already demonstrated photos of three purchases.

ST does not have a fab in china. but they do have a back end site in china where the silicon is cut up and packaged. so the box says made in china. Wolfspeed (formerly cree) also uses a back end site in china. which is why the c2m1000 is stamped china.

I already understood that 9360 were made in China, most likely the manufacturer did not think about a WORTHY logo of the STM company. I admit, I do not know, if the hFE measurements show not 120... 220. but show as much as 341, is this good? or as I assumed, this is not normal.

that box is 1000 pieces. the mouser price for that is $283. i cannot imagine fakes for prices that low. fake 2sj79 are going for about $15 each. which is why there are tons of fakes on ebay. the typical hfe of 200 is the only spec on the datasheet. no minimum or maximum hfe specified.

Please don't transfer your hobbies to me. I write only about radio components, that is, on topic. And you discuss about Gucci with women...

Not sure why folks are continuing to indulge this idiot… maybe he’ll post some Gucci purses next.

I understand you, you have never encountered riddles, puzzles in life..., skip the post.

I realized that the serial number does not indicate the authenticity of the model...

How do you determine if a part is a fake? If a part with a poorly done or a suspiciously looking marking meets all the specifications of the genuine part that you can verify, would you still declare it a fake?

the 3rd one is the only one with the box after the cree label that matches parts i have. my parts mostly have a w13814 date code

I will show three photos as a riddle. One copy from DigiKey/ two variants from China, and surprisingly, one of the Chinese ones is not a fake. Who can visually determine the fake?

Six Degrees of Inner Turbulence by Dream Theater (2002) https://album.link/frb2khtqzt3f9 Example: Realizing there were a few gaps in my Dream Theater history. Filling those gaps. Happily.

Note, not my soldering job. battery in microscope dead too much work to get the 1:1 lens out.

Yes, I'm interested to know why the increase is twice as painful, maybe it's better?