MAT02 transistors on eBay, are they genuine? - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 13th October 2012, 04:03 PM   #1
diyAudio Member
 
Joshua_G's Avatar
 
Join Date: Nov 2008
Location: Small village, Israel
Default MAT02 transistors on eBay, are they genuine?

Does any one know if the MAT02 transistors from the following eBay links are genuine?
IC ADI TO-78(-6) MAT02EH | eBay
1pcs MAT02EH MAT02 Low Noise Matched Dual Monolithic Transistor | eBay
AD MAT02EH CAN-6 CONN HEADER 18POS 0.1 STR 15A | eBay
MAT02FH Manu:AD Encapsulation:CAN-6,Low Noise, Matched Dual Monolithic | eBay
MAT02CH MAT02 -- Matched Dual Monolithic Transistor ( NEW ) | eBay
  Reply With Quote
Old 13th October 2012, 04:24 PM   #2
diyAudio Member
 
Join Date: Apr 2006
Location: Minnesota
I don't know, but why did you ask? The feedback on the sellers is very favorable.
  Reply With Quote
Old 13th October 2012, 04:24 PM   #3
BrianL is offline BrianL  United States
diyAudio Member
 
Join Date: Mar 2002
Location: USA
All the pictures on the pink foam appear to be the same picture, just cropped and zoomed differently -- look at the texture of the foam. If you read this forum you'll find that some folks have managed to do OK buying components on eBay from Chinese vendors, but many have not. You have to answer two questions: a) can you afford to lose your money if it turns out to be a counterfeit and b) once you get it, how do you determine if it's genuine? Given you're likely buying this for its super-good matching, low noise, etc., you want to be sure it's the real thing.

If you decide to proceed, purchase more than needed, cut the can open on one unit and inspect the die under a microscope and see if it's the genuine ADI die. Note that even if it turns out to be the genuine article, it may be that someone is stealing rejects from the factory and selling them.
__________________
bel
  Reply With Quote
Old 13th October 2012, 04:51 PM   #4
diyAudio Member
 
Joshua_G's Avatar
 
Join Date: Nov 2008
Location: Small village, Israel
Well, I can afford loosing the money for the few MAT02 I need. However, I can I determine for sure if they are genuine, or if they perform equally to the genuine transistors?

A reliable European source charges about 4 times the charge those Chinese vendors are asking for.
  Reply With Quote
Old 13th October 2012, 04:54 PM   #5
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally Posted by BrianL View Post
Note that even if it turns out to be the genuine article, it may be that someone is stealing rejects from the factory and selling them.
That can happen.

Joshua, how many do you need? I can send a few that I know are genuine. You can save your money for other stuff, send a PM.
__________________
"The question of who is right and who is wrong has seemed to me always too small to be worth a moment's thought, while the question of what is right and what is wrong has seemed all-important."
  Reply With Quote
Old 13th October 2012, 08:27 PM   #6
diyAudio Member
 
Joshua_G's Avatar
 
Join Date: Nov 2008
Location: Small village, Israel
Quote:
Originally Posted by scott wurcer View Post
That can happen.

Joshua, how many do you need? I can send a few that I know are genuine. You can save your money for other stuff, send a PM.
Hi Scot,
Thank you very much, you are a real sport.
PM sent.
  Reply With Quote
Old 13th October 2012, 10:09 PM   #7
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally Posted by Joshua_G View Post
Hi Scot,
Thank you very much, you are a real sport.
PM sent.

Good thing and warning mine are all laser branded, not to say the others are not genuine.
__________________
"The question of who is right and who is wrong has seemed to me always too small to be worth a moment's thought, while the question of what is right and what is wrong has seemed all-important."
  Reply With Quote
Old 13th October 2012, 10:19 PM   #8
diyAudio Member
 
Joshua_G's Avatar
 
Join Date: Nov 2008
Location: Small village, Israel
Well, it's difficult for me to believe that some genuine ones will be laser branded and others print branded.
  Reply With Quote
Old 14th October 2012, 01:37 PM   #9
diyAudio Member
 
scott wurcer's Avatar
 
Join Date: Jan 2004
Location: cambridge ma
Quote:
Originally Posted by Joshua_G View Post
Well, it's difficult for me to believe that some genuine ones will be laser branded and others print branded.
I just noticed that the last seller has the part in a test carrier (not shipped that way) and branded MAT02C a grade that does not exist.
__________________
"The question of who is right and who is wrong has seemed to me always too small to be worth a moment's thought, while the question of what is right and what is wrong has seemed all-important."
  Reply With Quote
Old 14th October 2012, 02:46 PM   #10
diyAudio Member
 
Joshua_G's Avatar
 
Join Date: Nov 2008
Location: Small village, Israel
Quote:
Originally Posted by scott wurcer View Post
I just noticed that the last seller has the part in a test carrier (not shipped that way) and branded MAT02C a grade that does not exist.

Which is what I suspected...
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
(Genuine!) Hitachi transistors wanted johnm Swap Meet 10 27th February 2013 10:43 PM
Transistors, ICs from Ebay fireworks Parts 36 24th September 2011 08:47 PM
Good source for MAT01 MAT02 matched transistors fftulip Parts 3 16th August 2010 08:30 PM
TDA1541A double crown, genuine, for sale on Ebay ligascon Swap Meet 0 24th February 2009 02:16 PM
For Sale: 2SC5200 and 2SA1943 power transistors, genuine 01001101 Swap Meet 8 14th May 2006 03:53 AM


New To Site? Need Help?

All times are GMT. The time now is 03:58 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2