Fake or Genuine TIP35C/36C

zeus_threat · 21st July 2008, 04:50 PM

Hi can anyone tell me if in the attached picture the TIP35C and TIP36C shown are genuine or fake. Left in picture is TIP35C and right is TIP36C. The white suqre pad on the TIP35C was stuck on the die.

Both have resisted acetone test without any marking getting off

Thanks

theAnonymous1 · 21st July 2008, 05:01 PM

I busted open a Texas Instruments TIP36C made in Morocco and it looks identical to your ST. Sorry, I don't have any TIP35C to beat up for you.

nigelwright7557 · 21st July 2008, 05:15 PM

Quote:

Originally posted by zeus_threat
Hi can anyone tell me if in the attached picture the TIP35C and TIP36C shown are genuine or fake. Left in picture is TIP35C and right is TIP36C. The white suqre pad on the TIP35C was stuck on the die.

Both have resisted acetone test without any marking getting off

Thanks

I always buy from reputable dealers with company names I am familiar with. If i dont know where it has coem from it gets binned.

Its not worth frying a set of speakers for the little more i have to pay for decent components.

Andy L. Francis · 21st July 2008, 05:34 PM

IMHO the 35C is fake, the 36C is genuine.

Eva · 21st July 2008, 05:47 PM

The TIP36C is genuine. The TIP35C is not fake, it's a clone of respectable quality. I have used a few TIP35C and TIP36C from MOSPEC without problem.

Fake transistors use tiny dies and are by far never intended to perform as good as the original part. Clones are intended to exhibit the same performance.

zeus_threat · 21st July 2008, 06:24 PM

Well yes TIP35C was branded MOSPEC. Sorry cracked it open too quickly. Would you recommend that it might still be used
For a +-35V supply with a 4Ohm speaker to deliver around 100W?

Thanks

Andy L. Francis · 21st July 2008, 06:53 PM

Quote:

Originally posted by zeus_threat
Well yes TIP35C was branded MOSPEC. Sorry cracked it open too quickly. Would you recommend that it might still be used
For a +-35V supply with a 4Ohm speaker to deliver around 100W?

Thanks

For +/-35V rails and 4Ohm speaker impedance (100W-RMS) you'll need two pairs of TIP35C/36C.

Tom7227 · 21st July 2008, 07:42 PM

I have original TIP 35C and TIP 36C made by KEC. if you are interested in purchasing some, please contact me. They are originals from the manufactur.

If you need a pic, I can send one to you.

zeus_threat · 21st July 2008, 07:48 PM

Yes exactly you are right but please tell me if my rough calculations are correct please

Max dissipation for a +-35V PSU

V=35/2=17.5
Power=(17.5 * 17.5)/4 ohm=76W

To Compensate for inductive loads 76W*2=153W dissipation per transistor

Two pairs of TIPxxC will provide 125W*2=250W per pair Safe enough

Am i right?

Thanks

gain · 21st July 2008, 11:21 PM

36C: real
35C: fake

IMHO

only way to really be sure is install 'em and see if you get pyrotechnics at rated loads. just like a woman, if she keeps coming back for more then she ain't fakin. btw digikey and mouser both list '35C in stock and they do not ship fakes IME.

best regards and down with the fakers!!!

21st July 2008, 05:01 PM	#2
theAnonymous1 diyAudio Member Join Date: Feb 2004 Location: Anonymityville	I busted open a Texas Instruments TIP36C made in Morocco and it looks identical to your ST. Sorry, I don't have any TIP35C to beat up for you. __________________ "If you don't like funerals don't kick sand in Ninja's face." - Ninja

21st July 2008, 05:47 PM	#5
Eva diyAudio Member Join Date: Oct 2003 Location: Near the sea	The TIP36C is genuine. The TIP35C is not fake, it's a clone of respectable quality. I have used a few TIP35C and TIP36C from MOSPEC without problem. Fake transistors use tiny dies and are by far never intended to perform as good as the original part. Clones are intended to exhibit the same performance. __________________ I use to feel like the small child in The Emperor's New Clothes tale

21st July 2008, 06:24 PM	#6
zeus_threat diyAudio Member Join Date: Nov 2005 Location: Mauritius	Thanks everyone Well yes TIP35C was branded MOSPEC. Sorry cracked it open too quickly. Would you recommend that it might still be used For a +-35V supply with a 4Ohm speaker to deliver around 100W? Thanks

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21st July 2008, 05:34 PM	#4
Andy L. Francis diyAudio Member Join Date: Feb 2008	IMHO the 35C is fake, the 36C is genuine.

21st July 2008, 07:42 PM	#8
Tom7227 diyAudio Member Join Date: Dec 2006 Location: Buffalo	I have original TIP 35C and TIP 36C made by KEC. if you are interested in purchasing some, please contact me. They are originals from the manufactur. If you need a pic, I can send one to you.

21st July 2008, 07:48 PM	#9
zeus_threat diyAudio Member Join Date: Nov 2005 Location: Mauritius	Yes exactly you are right but please tell me if my rough calculations are correct please Max dissipation for a +-35V PSU V=35/2=17.5 Power=(17.5 * 17.5)/4 ohm=76W To Compensate for inductive loads 76W2=153W dissipation per transistor Two pairs of TIPxxC will provide 125W2=250W per pair Safe enough Am i right? Thanks

21st July 2008, 11:21 PM	#10
gain diyAudio Member Join Date: Apr 2008	36C: real 35C: fake IMHO only way to really be sure is install 'em and see if you get pyrotechnics at rated loads. just like a woman, if she keeps coming back for more then she ain't fakin. btw digikey and mouser both list '35C in stock and they do not ship fakes IME. best regards and down with the fakers!!!

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