Is this fake, it blows too much easy for a rudged TIP36 transistor

[destroyer X]

Also i can see two chips, out of alignment...maybe both in parallell....the name was a Chinese name, but this do not seems Chinese are doing that...maybe this is made here, in South América.

Have some Chinese name over...and very well constructed, outside, you can inspect with lenses, and nothing strange is founded.

But this transistor burned so easy, with some small supply, low voltage, and current of 5 amps...nothing big in the base, not big current entering the base, nor voltage too....no audio....and Kaput!

Have some informs to me and forum guys?

Please, knowing some, tell us.

regards,

Carlos

[destroyer X]

And they are out of alignment....and see the way it is fixed.

I do not know...but, appearance is strange.

Carlos

[grimberg]

Carlos,

Unfortunately, counterfeit semiconductors became an increasing problem in recent years. With so many companies transferring their manufacturing facilities to China, machinery and know-how is now available to unscrupulous people trying to make a quick buck.
If you search the forum with the word “counterfeit”, you will find a few threads in which the problem has been discussed. You can see a recent one here:

Genuine 2SC5200 ???

Rod Elliot also talks about it on his web site:

http://sound.westhost.com/counterfeit.htm

[Eva]

These are absolutely fake

This is how genuine TIP35C and TIP36C look like...



These ones are from SGS-Thomson and are made in Morocco. That Morocco factory appears to have been owned by Texas instruments in the past, since these same devices were labelled as Texas Instruments some years ago. The die measures 4.5 by 4.5 milimeters


These ones are from an unknown manufacturer but are commonly found on car-audio equipment and are very reliable. The die measures a whopping 5 by 5 milimeters


Finally, these ones are made by a company called MOSPEC from Taiwan. They appear to be also reliable and capacitance tests reveal a reasonable die size. I have no pictures of the insides of them since this is the last remaining unit I got of that kind and it's good working so it would hurt to break it

A single pair of these devices is capable of reliably driving 4 ohms of slightly inductive load [+-45º] with +-40V rails. I haven't tested higher rails but they may probably survive +-45V or even +-50V

[destroyer X]

I have those Morocco also, and i am happy to know they are good.
And the ones i have are matched in gain...same series number, maybe same waffer.

regards,

Carlos

[destroyer X]

Very kind to came to help, both of you.

regards Grimberg

Carlos

[destroyer X]

They are using Chinese names, to induce us to believe, that all that dirty came from China, and i think came from Soutwest from South America...but i have not sure about that too.

The problem is that burns the Chinese image, and this is not fair, and this is much worst than sale fake units...as we have internet, we have mouth, and our new fast comunication can keep ourselves well informed.... we already know many news about fake transistors...Rodd already doing that, and started many years ago...when i read his text first time.

When we had the Cold war....against "Russian Monsters that eat children alive".... all that big lies, they are kind as a home cat.... and alike a home cat, has their own nails too.

In the second world war, they turn bad...but was too much angry inside...the SS crazy animals entered Russia killing everything that move....children, woman, old guys, animals, everything was killed..... those real animals from Stuts Staffel turn those Russians so bad when invaded Germany....each one of them may have lost unless one...murdered by SS demons....Russians are kind...but they are not completely without feelings, of course can feel angry, can turn nervous...of course!

In those times, i had friends from Russia, and i see clearly, the Propaganda was completely wrong.... nothing real there!..only lyes.

Now that dirty thing, burning in fire the respectability of Chinese people...this is worst....real worst...as we can defend ourselves against fake units.... but that actitude will create a dirty connection between chinese people and dirty business...and this is not fair.

Carlos

[DarkHorse]

Originally posted by destroyer X
They are using Chinese names, to induce us to believe, that all that dirty came from China, and i think came from Soutwest from South America...but i have not sure about that too.

The problem is that burns the Chinese image, and this is not fair, and this is much worst than sale fake units...as we have internet, we have mouth, and our new fast comunication can keep ourselves well informed.... we already know many news about fake transistors...Rodd already doing that, and started many years ago...when i read his text first time.

When we had the Cold war....against "Russian Monsters that eat children alive".... all that big lies, they are kind as a home cat.... and alike a home cat, has their own nails too.

In the second world war, they turn bad...but was too much angry inside...the SS crazy animals entered Russia killing everything that move....children, woman, old guys, animals, everything was killed..... those real animals from Stuts Staffel turn those Russians so bad when invaded Germany....each one of them may have lost unless one...murdered by SS demons....Russians are kind...but they are not completely without feelings, of course can feel angry, can turn nervous...of course!

In those times, i had friends from Russia, and i see clearly, the Propaganda was completely wrong.... nothing real there!..only lyes.

Now that dirty thing, burning in fire the respectability of Chinese people...this is worst....real worst...as we can defend ourselves against fake units.... but that actitude will create a dirty connection between chinese people and dirty business...and this is not fair.

Carlos

Hi,Mr Carlos:
the fake units can be manufactured anywhere whole the world!
so we must take more carefully to identification.but don't do anythings what is contumelious behavior to chinese!
because most of people are well-meaning in china!
I hate the fake units too!
do you think so?Mr.Carlos.

regards,
WINCO

[john-china]

Originally posted by DarkHorse


Hi,Mr Carlos:
the fake units can be manufactured anywhere whole the world!
so we must take more carefully to identification.but don't do anythings what is contumelious behavior to chinese!
because most of people are well-meaning in china!
I hate the fake units too!
do you think so?Mr.Carlos.

regards,
WINCO

i dont think so , although i am a real chinese.
anything fake is all ove the china, so i dont dare buy chinese products which i dont know well. of cource i never buy ir mosfet from chinese market for my pass amplifier.

[Eva]

Big electronic component dealers are the only ones we have to blame for this growing fake-transistor market we are experiencing. They allways know what they sell and to whom they have bought it

They buy, even at custon-order, fake and rebranded transistors to dozens of small fake manufacturing companys across the world. They know they are buying fakes and they pay it much cheaper than genuine devices, but they sell the stuff to you as if it were genuine and at the price of genuine devices

Semiconductor market is ruled by offer and demand. For the fake market to exist there must be electronic component dealers demanding fake devices

Particularly, Spanish component dealers are very happy knowing that they sell fake components because they make more profit this way than selling genuine ones

I don't usually buy power transistors at Spanish local stores because they are almost allways fakes, I only buy resistors, capacitors, some ICs known to be genuine and little more. When I need power transistors I allways order to european stores like Farnell, Amidata or Conrad

Things in South America are even worse. Nearly all of the semiconductors sold on local stores are fakes, not only transistors but also ICs

So don't blame China or India, they don't lie about what they sell, the liars are our component dealers from our respective countries

Are they trying to ruin the reputation of local stores?