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Electronics => Projects, Designs, and Technical Stuff => Topic started by: ali_asadzadeh on October 14, 2021, 11:29:55 am

Title: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 14, 2021, 11:29:55 am

Hi,
Do you recognize this puppy or it's manufacturer?

Title: Re: Do you recognize this part with a big X marking?
Post by: tooki on October 14, 2021, 12:13:02 pm

And why would you present us with this without explaining what the gadget is? It’s a lot easier to identify a part if you have some idea what it’s doing.

Title: Re: Do you recognize this part with a big X marking?
Post by: amyk on October 14, 2021, 01:39:27 pm

Searching "QFN28 3320" was enough to find this one...

Microchip, previously SMSC, USB3320 (http://ww1.microchip.com/downloads/en/DeviceDoc/3320db.pdf).

Title: Re: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 14, 2021, 01:56:07 pm

Quote

And why would you present us with this without explaining what the gadget is? It’s a lot easier to identify a part if you have some idea what it’s doing.

It's a 1.25Gbps SFP

Title: Re: Do you recognize this part with a big X marking?
Post by: tooki on October 14, 2021, 01:58:08 pm

Quote from: amyk on October 14, 2021, 01:39:27 pm

Searching "QFN28 3320" was enough to find this one...

Microchip, previously SMSC, USB3320 (http://ww1.microchip.com/downloads/en/DeviceDoc/3320db.pdf).

Yes, but the datasheet there clearly shows that’s a QFN32 package, so it can’t be that.

Title: Re: Do you recognize this part with a big X marking?
Post by: 2N3055 on October 14, 2021, 02:17:45 pm

That's your guy:

UX3320 uxfastic.com

https://wenku.baidu.com/view/2be0e925f4335a8102d276a20029bd64793e6242.html

Good luck finding it..

Title: Re: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 16, 2021, 08:41:19 am

Wow, thanks 2N3055 how did you find it? could you find any datasheet?

Title: Re: Do you recognize this part with a big X marking?
Post by: wraper on October 16, 2021, 08:54:31 am

Quote from: 2N3055 on October 14, 2021, 02:17:45 pm

Good luck finding it..

Not hard to find at all https://www.utsource.net/pro/UX3320.html (https://www.utsource.net/pro/UX3320.html)

Title: Re: Do you recognize this part with a big X marking?
Post by: wraper on October 16, 2021, 09:09:38 am

Apparently you cannot download it for free. However you can view it here: https://wendang.quankj.com/doc/2be0e925f4335a8102d276a20029bd64793e6242-1.html (https://wendang.quankj.com/doc/2be0e925f4335a8102d276a20029bd64793e6242-1.html)  by clicking a button below it you can view next 5 pages.
(https://www.eevblog.com/forum/projects/do-you-recognize-this-part-with-a-big-x-marking/?action=dlattach;attach=1299652;image)

(https://www.eevblog.com/forum/projects/do-you-recognize-this-part-with-a-big-x-marking/?action=dlattach;attach=1299646;image)

Title: Re: Do you recognize this part with a big X marking?
Post by: Terry Bites on October 16, 2021, 04:45:26 pm

http://rtellason.com/semiconductorlogos.html (http://rtellason.com/semiconductorlogos.html)
very handy

Title: Re: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 17, 2021, 07:51:22 am

Quote

Not hard to find at all https://www.utsource.net/pro/UX3320.html (https://www.utsource.net/pro/UX3320.html)

Thanks for sharing. Have you buy from them before?

Title: Re: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 17, 2021, 07:52:12 am

I wonder if there is some place for chinese parts datasheets! do you know some place? that would be really helpful.

Title: Re: Do you recognize this part with a big X marking?
Post by: wraper on October 17, 2021, 08:42:34 am

Quote from: ali_asadzadeh on October 17, 2021, 07:51:22 am

Quote

Not hard to find at all https://www.utsource.net/pro/UX3320.html (https://www.utsource.net/pro/UX3320.html)

Thanks for sharing. Have you buy from them before?

Yes, I did. They are OK as long as you don't buy things like obsolete transistors which often may turn out to be fake. Also what's listed as used usually are new parts with older date code. They are a good source for oddball parts. Recently I bought 2 types of MCU which were obsoleted 15 years ago, one was listed as used. All arrived brand new and genuine. Don't expect proper ESD packaging though. They will make something stupid like placing parts wrapped into usual static generating film into ESD bag.

Title: Re: Do you recognize this part with a big X marking?
Post by: ali_asadzadeh on October 18, 2021, 07:28:43 am

Thanks wraper for the update. Do you know where they are located? are they a Chinese company?