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Old 19th November 2010, 11:31 PM   #331
Salas is online now Salas  Greece
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Quote:
Originally Posted by jacco vermeulen View Post
I'm not sure i get the question.

Philips splitted off the semi-divison 4 years ago, sold 5/6th of the shares to a couple of private equity clubs.(two months ago, Phily dumped the remaining 1/6th share)

NXP still uses the BD139/140 dies for other packaged products, same animals, same quality.
Not sure whether NXP will have as deep as pockets for future development as Phily had.
You understood exactly. I wanted to know if NXP classic Philips transistors are same spec. Thanks! Great to have a Jacco partner! To paraphrase a missing legend's song rendition. Since I know you like his later (and late also) band.
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Old 19th November 2010, 11:51 PM   #332
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Yeah, great, songs as that will still turn me 20s in my 80s.
(for some reason, most of my favs die early by heart failure)

The originals and offspring were already parlee'd, see mr Alex's Nikitin's comment here : BD139-16 & BD140-16? Anyone use these transistors?
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Old 20th November 2010, 12:00 AM   #333
Salas is online now Salas  Greece
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Only in TO-92 then.
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Old 20th November 2010, 12:31 PM   #334
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Not much point in shopping Phi TO126, if NXP still makes them.

Several Japanese parts are superior, but much more expensive or just as hard to get by nowadays.
I've got about a thou of the 139/140 in 10-16 dress, nice generic part to have plenty in stock, built up to 10-pair Class A output stages with them, the 3.2 Rjc becomes a relative number with plenty in parallel.
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Old 20th November 2010, 02:30 PM   #335
Ivey is offline Ivey  United States
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Default BD139 will soon cost a great deal

The transistor is too good, for its own good.

I use it in my QRP transmitters for 20 meters and 15 meters. With an Ft of 160Mhz @ 1amp, it is ideal for a PA.

Heat sinking the transistor, you can get 3 watts out of it. Paralleling it with 4 units will give you 16 watts when heat sink. Which is outstanding for QRP work.

But there are better transistors out there. Oh yes, the BD139, is a copy of the Motorola's 2N4900 series. Not exact copy, but real close.

One of the biggest problems that most of us will have in the future, is that a great deal of the Japanese designs will disappear from the market as we move deeper into SMD.

That is because the Chinese are buying up stock piles faster than anyone else can get a bid in on the products. Soon we will be buying 95% of all of our components from China, due to the fact that they have all of the market credit to do so. So if you are not hording, you best start today.

Take Care

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Old 20th November 2010, 03:05 PM   #336
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Quote:
Originally Posted by jacco vermeulen View Post
Crooked printing :yes.
Printing might be straight on a good day...
When building the headphone amp I bought a few extra, just in case, I found them stashed away somwhere.

Probably another thing to recognize the Philips' genuineness by is that the leads seem made from a softer metal (more copper?) than most others. These are quite easy to bend. They are slightly wider too which is hard to see in the picture, but if you lay the Motorola on top of the Philips, you'll see that the Philips' leads are ca. 1 1/3 the width of the Motorola.
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Old 20th November 2010, 03:37 PM   #337
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Indeed. The others case is a bit wider also.
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Old 20th November 2010, 03:43 PM   #338
AndrewT is offline AndrewT  Scotland
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the other one does not look as though it complies with To126.
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Old 20th November 2010, 03:49 PM   #339
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The Philips is 7.2mm wide the ST is 7.8mm wide.
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Old 20th November 2010, 04:08 PM   #340
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Default 2N4401-2N4403

What make is this? Recommended?
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