Transistors, ICs from Ebay

[fireworks]

Hello,

Has anyone bought transistors or ICs from the Chinese/HK sellers from Ebay ?
Over the years, I bought a lot of things on Ebay including from China and Hong Kong and I didn't have any problems.
However, I'm reading all kinds of scare stories about fake transistors bought on the Internet.

For example look at this link:

2 pcs of IRFP450 Power N-Channel MOSFET 14A 500V on eBay (end time 22-Oct-10 21:55:44 BST)

The seller has a very good feed-back, so should I trust him ?

What is your experience with active components from Ebay ?

 

[richie00boy]

I have bought MOSFETs from ebay before, but you have to be wise. I would not buy those from that seller - the parts originate in the US so I would not trust a Chinese source, and I find their claim to be a Canadian company a bit odd. The price is about right for a genuine part.

 

[poynton]

They do have a canadian address etc.

I would think that a registered company was easy to trace.


Andy

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[fireworks]

Even if the company is American, it's quite possible that the products are manufactured in China (or Asia), right ?

 

[richie00boy]

As far as I'm aware all IR fab is in the states or Mexico, which also rings true for a lot of the major quality American semi brands. Fairchild's Korean plant is possibly the only exception, with a few dotted around India.

 

[Minion]

There are a lot of companies that say they are in canada and the guy getting the money is in canada but the product gets shipped from China .....

 

[amc184]

If I were you I'd buy more than you needed and destructively test a couple when they arrive. Test them electrically, or just crack them open. The size of the die should be able to give you a good indication of whether they're fake or not.

 

[deepthrob]

As far as I'm aware all IR fab is in the states or Mexico, which also rings true for a lot of the major quality American semi brands. Fairchild's Korean plant is possibly the only exception, with a few dotted around India.

Yes, but just about everything gets sent to China for assembly into products.

 

[fireworks]

In the end I didn't buy those FETs, but some TL082 op. amps.:

http://www.diyaudio.com/forums/Hell...k 4 6300 Zug Switzerland Best regards.http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=250703302486


I hope at least those will be genuine ! If not genuine, at least of similar performance with the genuine ones .

If anyone has experience, either positive or negative, with buying parts on EBay or Internet, let us hear it.

 

[Juergen Knoop]

well, I would pay the same price for those TL082 at a German mailorder company.
Dunno what they cost in Switzerland.
regards

 

[richie00boy]

And I would not have bothered with TL082 but used TL072

 

[fireworks]

And I would not have bothered with TL082 but used TL072

A quick look at their specs and they seem quite similar in performance: noise, GBW are almost the same.
Why do you think TLO72 are better ?

 

[fireworks]

well, I would pay the same price for those TL082 at a German mailorder company.
Dunno what they cost in Switzerland.
regards

What are the companies in Germany that you use ? I'm quite interested in finding alternative suppliers since the ones in Switzerland are bad/expensive.

 

[richie00boy]

TL072 is the industry standard low noise reasonable sounding good value op-amp. Why buy the 082 when the cost is basically the same?

I know of a couple of German suppliers (Reichelt and the name of the other one escapes me at the moment), but have heard mixed reports. I have used an Austrian company called Neuhold and had no problems.

 

[Moddang]

Hello,

Has anyone bought transistors or ICs from the Chinese/HK sellers from Ebay ?
Over the years, I bought a lot of things on Ebay including from China and Hong Kong and I didn't have any problems.
However, I'm reading all kinds of scare stories about fake transistors bought on the Internet.

For example look at this link:

2 pcs of IRFP450 Power N-Channel MOSFET 14A 500V on eBay (end time 22-Oct-10 21:55:44 BST)

The seller has a very good feed-back, so should I trust him ?

What is your experience with active components from Ebay ?

I think, buy the component from non-authorized or unwell know distributor you have the risk. You may get the scraped material (not meet specification or any problem) that escape from manufacturing or the fake component.

Please try with conventional voltage regulator first from unwell know chinese source. Looking for the cheapest one then order just 500-1k. You will see.

Goodluck.

 

[Juergen Knoop]

TL082 and TL072 are just different stamps on the same part. Given todays maturity of the semiconductor industry, they are no more different than TL072 from different manufacturers or maybe production runs.
Reichelt is a nice to deal with company, but they usual don't guaranty specific manufacturers.
I have no idea how or where they source their stuff.
regards

 

[fireworks]

TL082 and TL072 are just different stamps on the same part.

Thanks for the info. As I said before, I looked at the datasheets and the specs are close or identical.

Reichelt is a nice to deal with company, but they usual don't guaranty specific manufacturers.

Other than Reichelt, which I know of, what are the good places to buy from in Germany ?

 

[richie00boy]

Same part maybe, but the 7 series are the selected group of the die.

 

[dchisholm]

Hello,

Has anyone bought transistors or ICs from the Chinese/HK sellers from Ebay ? . . .

Would somebody be kind enough to give a quick overview of how these transactions work? I see quite a few E-Bay sellers from China, some with quite extensive histories and high ratings. I'm probably interested in component parts, with orders under US$100, so I'd probably use PayPal - or is there a more preferred method of payment? Do you use the "standard" shipping (I presume this takes about 10 - 15 days) or other methods? Do I have to pay customs, tariff, duties, etc (and how are they collected)? Is language a significant problem when dealing with China?

I know that gray-market, sub-prime, and counterfeit components is another subject entirely - but how do you approach the problem? I certainly don't have the means to thoroughly inspect and test the components I buy, even if I limited it to a few parameters of special significance. Do you expect to receive some sub-standard parts, even from otherwise reputable sellers?

Thanks for your help,
Dale

 

[poynton]

Just because a seller has a high feedback rating or many sales, does not mean they are reputable.

As an example, Tzeng Albert has (had) a high rating.
He was also a scam artist of the highest order and sold fake after fake.!!!!!
(Do a search of the name on the forum.)

His rating was inflated by basically selling items to himself and giving himself good feedback.

Not all Chinese/Hong kong sellers are bad......many are.

So what do you do ?

Source from other countries, always use Paypal, always give bad feedback immediately if the parts are not what was ordered or do not work and always file a claim with Ebay and Paypal.


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