Do you recognize this part with a big X marking? - Page 1
Forum section: electronics / projects

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 14, 2021, 11:29:55 am
content: Hi,Do you recognize this puppy or it's manufacturer?

author: tooki
author_rank: Super Contributor
timestamp: October 14, 2021, 12:13:02 pm
content: 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.

author: amyk
author_rank: Super Contributor
timestamp: October 14, 2021, 01:39:27 pm
content: Searching "QFN28 3320" was enough to find this one...Microchip, previously SMSC, USB3320.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 14, 2021, 01:56:07 pm
content: QuoteIt's a 1.25Gbps SFP

author: tooki
author_rank: Super Contributor
timestamp: October 14, 2021, 01:58:08 pm
content: Quote from: amyk on October 14, 2021, 01:39:27 pmYes, but the datasheet there clearly shows that’s a QFN32 package, so it can’t be that.

author: 2N3055
author_rank: Super Contributor
timestamp: October 14, 2021, 02:17:45 pm
content: That's your guy:UX3320 uxfastic.comhttps://wenku.baidu.com/view/2be0e925f4335a8102d276a20029bd64793e6242.htmlGood luck finding it..

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 16, 2021, 08:41:19 am
content: Wow, thanks 2N3055 how did you find it? could you find any datasheet?

author: wraper
author_rank: Unknown
timestamp: October 16, 2021, 08:54:31 am
content: Quote from: 2N3055 on October 14, 2021, 02:17:45 pmNot hard to find at allhttps://www.utsource.net/pro/UX3320.html

author: wraper
author_rank: Unknown
timestamp: October 16, 2021, 09:09:38 am
content: Apparently you cannot download it for free. However you can view it here:https://wendang.quankj.com/doc/2be0e925f4335a8102d276a20029bd64793e6242-1.htmlby clicking a button below it you can view next 5 pages.

author: Terry Bites
author_rank: Super Contributor
timestamp: October 16, 2021, 04:45:26 pm
content: http://rtellason.com/semiconductorlogos.htmlvery handy

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 17, 2021, 07:51:22 am
content: QuoteThanks for sharing. Have you buy from them before?

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 17, 2021, 07:52:12 am
content: I wonder if there is some place for chinese parts datasheets! do you know some place? that would be really helpful.

author: wraper
author_rank: Unknown
timestamp: October 17, 2021, 08:42:34 am
content: Quote from: ali_asadzadeh on October 17, 2021, 07:51:22 amYes, 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.

author: ali_asadzadeh
author_rank: Super Contributor
timestamp: October 18, 2021, 07:28:43 am
content: Thanks wraper for the update. Do you know where they are located? are they a Chinese company?