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Author Topic: Fake BT138X-600D or NOT ? That is the question.  (Read 3575 times)

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Offline JacquesBBBTopic starter

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Fake BT138X-600D or NOT ? That is the question.
« on: February 25, 2015, 09:56:39 am »
Dear All,

As the BT138X-600D  triacs from NXP were only available at Mouser by thousands, I ordered some on aliexpress.
I received them, but their package seems to be of very low quality compared to the other triacs I have
of similar values from NXP (see the attached pictures).

I highly suspect that they are fake. What do you think ?

If some one has an thrustful BT138X-600D, can he post a  picture of it for comparison.

Thanks
« Last Edit: February 25, 2015, 10:06:40 am by JacquesBBB »
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Offline Zucca

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Re: Fake BT138X-600D or NOT ? That is the question.
« Reply #1 on: February 25, 2015, 10:19:03 am »
Don´t know... but.. Did you compare them just with your eyes? May be a test circuit could help you to understand if you can use them as replacement or not.
« Last Edit: February 25, 2015, 11:28:09 am by zucca »
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Offline Guni

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Re: Fake BT138X-600D or NOT ? That is the question.
« Reply #2 on: February 25, 2015, 11:35:44 am »
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Offline JacquesBBBTopic starter

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Re: Fake BT138X-600D or NOT ? That is the question.
« Reply #3 on: February 25, 2015, 01:18:15 pm »
Quote from: Guni on February 25, 2015, 11:35:44 am
https://octopart.com/bt138x-600f-nxp+semiconductors-360503

In fact  this is more

https://octopart.com/search?q=BT138X-600D


Quote from: zucca on February 25, 2015, 10:19:03 am
Did you compare them just with your eyes? May be a test circuit could help you to understand if you can use them as replacement or not.

Yes, up to now, I just compared with the eyes. The difference with the other NXP triacs was so flagrant that I did not  even made an experiment, which I may do later on if this is the only way, but this needs some time and a proper setting to test
the component at full load.

I have send a message to the supplier who says that the parts are genuine.
I send also a message to NXP  with no answer up to now.

The  pins of the  triac are of  glossy metal that looks very flimsy for a 12A  triac.
The overall quality of fabrication  is very poor : printing is not even; plastic is not well pressed. 

This is why I ask on the forum, hoping that someone will have a genuine part to compare.
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Offline JacquesBBBTopic starter

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Re: Fake BT138X-600D or NOT ? That is the question.
« Reply #4 on: March 06, 2015, 10:22:40 am »
For information, this is the message I received from NXP


From the picture, it is high possibility counterfeit part. While I would suggest you to purchase from authorized channel.

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Offline McBryce

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Re: Fake BT138X-600D or NOT ? That is the question.
« Reply #5 on: March 06, 2015, 12:03:47 pm »
Compare the package and pin dimensions with the dimensions in the NXP Datasheet. Even looking at the picture, I'd say they don't match.

http://www.nxp.com/documents/data_sheet/BT138X-600.pdf

McBryce.
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