Counterfeit 2N3055?

D

DaveC

Guest
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

Thanks,
--
DaveC
me@bogusdomain.net
This is an invalid return address
Please reply in the news group
 
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?
Click to expand...

** Well, I have bought counterfeit BC639s for 30c each - they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell - but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.



...... Phil
 
On Dec 11, 6:05 pm, DaveC <m...@bogusdomain.net> wrote:
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?
Click to expand...
Not if you buy from a reputable supplier like Farnell, Digikey,
Mouser, Newark etc, or the approved rep for the manufacturer you have
in mind.

Dave.
 
Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?


** Well, I have bought counterfeit BC639s for 30c each - they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell - but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.



..... Phil
Click to expand...

'They' are faking everything now. There have been incidents of caps
being faked too.
 
On Thu, 11 Dec 2008 02:12:00 -0800, the renowned PhattyMo
<phattymo@not.net> wrote:

Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?


** Well, I have bought counterfeit BC639s for 30c each - they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell - but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.



..... Phil





'They' are faking everything now. There have been incidents of caps
being faked too.
Click to expand...
I have a bag of 1,000 fake Panasonic trimpots.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
On 11 Dec, 11:25, Spehro Pefhany <speffS...@interlogDOTyou.knowwhat>
wrote:
On Thu, 11 Dec 2008 02:12:00 -0800, the renowned PhattyMo



phatt...@not.net> wrote:
Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

** Well, I have bought counterfeit BC639s for 30c each  -  they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell -   but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.

.....  Phil

'They' are faking everything now. There have been incidents of caps
being faked too.

I have a bag of 1,000 fake Panasonic trimpots.

Best regards,
Spehro Pefhany
--
"it's the network..."                          "The Journey is the reward"
sp...@interlog.com             Info for manufacturers:http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com
Click to expand...
Do they work?

Leon
 
On Thu, 11 Dec 2008 04:26:07 -0800 (PST), the renowned Leon
<leon355@btinternet.com> wrote:

On 11 Dec, 11:25, Spehro Pefhany <speffS...@interlogDOTyou.knowwhat
wrote:
On Thu, 11 Dec 2008 02:12:00 -0800, the renowned PhattyMo



phatt...@not.net> wrote:
Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

** Well, I have bought counterfeit BC639s for 30c each  -  they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell -   but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.

.....  Phil

'They' are faking everything now. There have been incidents of caps
being faked too.

I have a bag of 1,000 fake Panasonic trimpots.

Best regards,
Spehro Pefhany
--
"it's the network..."                          "The Journey is the reward"
sp...@interlog.com             Info for manufacturers:http://www.trexon.com
Embedded software/hardware/analog  Info for designers:  http://www.speff.com

Do they work?

Leon
Click to expand...
Yes, but the wiper pressure/torque to move is not as consistent as the
real Japanese ones, and they are at random positions (hand assembly)
as compared to the real ones which come set dead center (machine
assembly). I would never risk shipping them in a product.


Best regards,
Spehro Pefhany
--
"it's the network..." "The Journey is the reward"
speff@interlog.com Info for manufacturers: http://www.trexon.com
Embedded software/hardware/analog Info for designers: http://www.speff.com
 
Spehro Pefhany wrote:
On Thu, 11 Dec 2008 02:12:00 -0800, the renowned PhattyMo
phattymo@not.net> wrote:

Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?


** Well, I have bought counterfeit BC639s for 30c each - they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell - but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.



..... Phil





'They' are faking everything now. There have been incidents of caps
being faked too.

I have a bag of 1,000 fake Panasonic trimpots.
Click to expand...

Can you post a picture of them, and the real Panasonic pots on
news:alt.binaries.schematics.electronic

--
http://improve-usenet.org/index.html

aioe.org, Goggle Groups, and Web TV users must request to be white
listed, or I will not see your messages.

If you have broadband, your ISP may have a NNTP news server included in
your account: http://www.usenettools.net/ISP.htm


There are two kinds of people on this earth:
The crazy, and the insane.
The first sign of insanity is denying that you're crazy.
 
On Dec 11, 2:05 am, DaveC <m...@bogusdomain.net> wrote:
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?
Click to expand...
Yes, there are counterfeit dies in TO-3 cans that don't even make the
2n3055's loose standards.

I wouldn't think there would be any problem getting real ones from any
domestic distributor, though. Start going to E-bay or a broker and,
well, I'd scratch my head as to why you're going to E-bay or a broker.

Tim.
 
On Wed, 10 Dec 2008 23:05:25 -0800, DaveC wrote:

I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?
Click to expand...
I just wonder, why would anyone spec a 2N3055 these days anyway?

Thanks,
Rich
 
Tim Shoppa <shoppa@trailing-edge.com> wrote in news:64f8a666-439c-4983-a04d-
918cd423dace@p2g2000prn.googlegroups.com:

I'd scratch my head as to why you're going to E-bay
Click to expand...
I do it at times. It's a gamble, but there are small firms dealing in surplus
bought up as inventory from unfinished commercial projects, failing
enterprise, or even just rich hobbyists who decide thast some kind of
unilateral 'group buy' makes sense. Say they want a few hundred, and have the
buying power to get a discount on thousands, they then sell batches of 50 or
a hundred on eBay till they recover more than they paid, AND have the stock
levels they need for themselves. I wouldn't want to chance a spend on some
expensive part whose behaviour and appearance are easily faked, and where
that part has a high price, but I've scored some good batches of low
ESR tantalum caps on original reels, varistors, and some very nice SMT
LM317MDT regulators, as well as standard LM317T. A couple of hundred voltage
references too. And some very nice 1W Philips 4.9V zener diodes chosen to fit
a tight space, they're tiny SMT parts. The IC's are National Semiconductor
parts mostly. (And a LOT of small SMT resistors and ceramic caps). If they're
fakes, they work damn well, and at the price I got them, I'm not complaining.
No failures yet.

In short, I don't buy the things people want me to buy, as they hold out
impossible promises, I buy those that I want to buy, IF they are there, meet
required specs, and shipping costs are low, and the seller looks good. Hasn't
failed yet. There are at least two or three good sellers like this in
Florida, they seem to like doing this there for reasons I don't know, there
are more than elsewhere. Anyway, I stay with my own requirements, if the
offerings don't fit, then I pay higher if that's what it takes, from closer
to source. I don't rely on this for large sales, just a few that I can
support if it goes wrong. And it hasn't yet.

The best approach to this might be to do it for those parts where you're
developing something and have some parts types you need lots of whatever
you're likely to work on. It will be a LONG time before I have to take the
same risks again on those parts.
 
On Thu, 11 Dec 2008 19:38:46 GMT, Rich Grise <rich@example.net> wrote:

On Wed, 10 Dec 2008 23:05:25 -0800, DaveC wrote:

I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

I just wonder, why would anyone spec a 2N3055 these days anyway?

Thanks,
Rich
Click to expand...
A bank of them would make a nice electronic load for battery testing.
I have lots of TO-3 mounting hardware around.
 
"Rich Grise"

I just wonder, why would anyone spec a 2N3055 these days anyway?
Click to expand...

** Name a TO3 pack, general purpose, power BJT that is better, cheaper and
readily available.

Bet you cannot.



..... Phil
 
"Phil Allison" <philallison@tpg.com.au> wrote in
news:6qdhnkFbovb2U1@mid.individual.net:

"Rich Grise"


I just wonder, why would anyone spec a 2N3055 these days anyway?



** Name a TO3 pack, general purpose, power BJT that is better, cheaper and
readily available.

Bet you cannot.



.... Phil
Click to expand...
I can't, but at only a tad more (in hundreds at once), there is the 2n3773.
I've seen those a lot, and used them in audio amp repairs, where they worked
fine. I'm not tying to compare quality, just saying they were cheap, and they
were there when I wanted them.
 
Rich Grise wrote:

DaveC wrote:

I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabeled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

I just wonder, why would anyone spec a 2N3055 these days anyway?
Click to expand...
I haven't looked at the price recently but for a 115W TO-3 npn general purpose
power transistor it may actually be very cost effective.

Beware of the difference between the 2N3055 and 2N3055H.

Graham
 
Lostgallifreyan wrote:

"Phil Allison" <philallison@tpg.com.au> wrote

** Name a TO3 pack, general purpose, power BJT that is better, cheaper and
readily available.

Bet you cannot.

I can't, but at only a tad more (in hundreds at once), there is the 2n3773.
I've seen those a lot, and used them in audio amp repairs, where they worked
fine. I'm not tying to compare quality, just saying they were cheap, and they
were there when I wanted them.
Click to expand...
They were a damn sight pricier than 2N3055s I can tell you. I still have part of
a tray of them left over from when I did repairs more often. Actually not a bad
device at all for its day. It's why 800W per channel became a sort of 'standard'
for PA/SR power amplifiers into 4 ohm loads for ages.

Graham
 
On Dec 12, 1:41 am, "Michael A. Terrell" <mike.terr...@earthlink.net>
wrote:
Spehro Pefhany wrote:

On Thu, 11 Dec 2008 02:12:00 -0800, the renowned PhattyMo
phatt...@not.net> wrote:

Phil Allison wrote:
"DaveC"
I need to buy some '3055's. Is there much risk of getting a counterfeit? I
read that because these are so cheap, they are being substituted (and
relabelled) for more expensive transistors. But there's not much profit in
counterfeiting 3055's.

Should I be concerned?

** Well, I have bought counterfeit BC639s for 30c each - they were very
likely reject BC547s relabelled.

The aim of the counterfeiter is sell devices he can get for almost nothing
that near impossible to sell and make a killing by falsely re-labelling
them.

2N3055s are still very popular and so easy to sell - but lots of other
old, oddball TO3 types are not.

Expect fakes to be offered on eBay and elsewhere.

..... Phil

'They' are faking everything now. There have been incidents of caps
being faked too.

I have a bag of 1,000 fake Panasonic trimpots.

Can you post a picture of them, and the real Panasonic pots on
news:alt.binaries.schematics.electronic
Click to expand...
How about using the web instead so everyone can view them without
issues?
I don't understand why people persist with using
alt.binaries.schematics.electronic

Dave.
 
Eeyore <rabbitsfriendsandrelations@hotmail.com> wrote in
news:4941A35F.F4A19BA5@hotmail.com:

They were a damn sight pricier than 2N3055s I can tell you.
Click to expand...
Fair enough. Was just looking at Digikey's 300 just now, looked decent price
to me, but singles shot up to 2x, even 3x.
 
"Eeysore the Professional LIAR "
They were a damn sight pricier than 2N3055s I can tell you. I still have
part of
a tray of them left over from when I did repairs more often. Actually not
a bad
device at all for its day. It's why 800W per channel became a sort of
'standard'
for PA/SR power amplifiers into 4 ohm loads for ages.
Click to expand...

** OK - lets see you list a couple of popular models of audio power amp
that used only 2N3773s for outputs and were rated at 800 wpc into 4 ohms.





...... Phil
 
I just wonder, why would anyone spec a 2N3055 these days anyway?

Thanks,
Rich
Click to expand...
Replacement.
--
DaveC
me@bogusdomain.net
This is an invalid return address
Please reply in the news group
 
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