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Old 10th July 2015, 07:37 PM   #1
Sk8Ter is offline Sk8Ter  United States
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Default Are these Real?

50 Chip Lot Texas Instruments NE5534AP Op Amp IC Chip | eBay


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Old 10th July 2015, 08:44 PM   #2
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More than likely, yes they are.
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Old 10th July 2015, 09:01 PM   #3
sreten is offline sreten  United Kingdom
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Hi,

Pretty much impossible to fake at lower cost.
Only possible con is labelling 5534 as 5534A.
(The A version has lower input noise.)

rgds, sreten.
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Old 10th July 2015, 10:05 PM   #4
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Look expensive though. Check out Mouser and RS first!
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Old 10th July 2015, 11:37 PM   #5
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When comes to semiconductors, I am a little worry and tends to get from reputable places like Mouser, Digikey, Allied and Newark etc. You ain't going to test every single spec.

Hell, if I print the number of an expensive opamp onto a 741, as long as the frequency response is close, you are going to have a hell of a time to distinguish that until it's too late. You'll end up wasting time.

I only buy cheap resistor as it's so simple and you can't go too wrong. I don't even buy capacitors on ebay if I need higher voltages ones common in audio amps.

I just found the thread on Utsource. their stuffs are cheaper, but a lot of people have bad experience.
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Old 10th July 2015, 11:52 PM   #6
kevinkr is offline kevinkr  United States
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5534A DIPs are $0.84 each at Mouser in quantities of 10. I'd not run the risk on eBay, even at those low prices there is probably someone somewhere who figures it is worth counterfeiting for profit.

I regularly buy Russian mil spec surplus and sometimes generic resistors without issue on eBay, but I almost never buy semiconductors unless from a U.S or European vendor.
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Old 11th July 2015, 02:05 AM   #7
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If in doubt sling them out.

RS and Farnell are the only people I will buy from.
They are usually pretty good on price anyway.
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Old 11th July 2015, 03:10 AM   #8
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I am starting to like Mouser. They seems to be a little cheaper than Digikey. I just ordered two parts as a test run, we'll see how fast they ship. digikey always received in 3 days, nobody beat them so far from my experience.

AND Mouser take Paypal, I don't have to give out my credit card number.
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Old 11th July 2015, 02:13 PM   #9
Sk8Ter is offline Sk8Ter  United States
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Default Thanks for the replys

Thanks guys for the reply's.....does anyone know how to read the nomenclature date codes etc on these chips...maybe that would be the key to knowing if they are real or not


Lawrence
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Old 11th July 2015, 06:53 PM   #10
sreten is offline sreten  United Kingdom
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Hi,

The pinout of a 5534 (unlike a 5532)
makes it hard to fake, i.e. relabel
something cheaper as a 5534.

rgds, sreten.
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