Chinese copy of Semtech TS30042 buck converter IC? - Page 1
Forum section: electronics / general

author: hanakp
author_rank: Regular Contributor
timestamp: May 28, 2021, 11:09:16 pm
content: The current semiconductor shortage affects Semtech TS30042 buck converter IC, which is used in one of products I helped to design. I painstakingly checked all other similar converters from "respectable" producers, but found no drop-in replacement. Maxim makes some very similar ICs, but with different pinout. Is there any chance that some obscure chinese company copied TS30042? And if so, how can I check it exists? Is there a chinese semiconductor e-shop which can filter the parts by parameters, like Mouser or Digikey? The e-shop may be completely in Chinese, I have a colleague who speaks the language. Thanks!

author: ebclr
author_rank: Super Contributor
timestamp: May 29, 2021, 03:35:01 am
content: If they are real ones, fakes or copies I don't know But they are widely available in Chinahttps://s.taobao.com/search?q=TS30042&type=p&tmhkh5=&from=sea_1_searchbutton&catId=100&spm=spm%3Da2141.241046-global.searchbar.d_2_searchbox

author: asrinur
author_rank: Newbie
timestamp: June 05, 2021, 03:57:13 pm
content: looks like it's a tough job. You can't possibly look for it so specifically. But it never hurts to try to ask your friend.

author: ibnufachruddin
author_rank: Newbie
timestamp: February 07, 2023, 07:52:56 am
content: Thanks

author: hanakp
author_rank: Regular Contributor
timestamp: February 22, 2023, 12:32:32 pm
content: Today, I noticed one thing: you can't google SMD marking codes on these Semtech ICs. They'rein the datasheeton page 17, but the table is a vector image without text layer. I guess the mexican slave labor hires who usually work on such documents these days don't yet understand the importance of search engine indexing (and/or their corporate masters don't care). I needed them recently, so the codes are:Part NumberVoltage AssignMarking CodeTS30041-M000QFNRADJ41M00TS30041-M015QFNR1.5V41M15TS30041-M018QFNR1.8V41M18TS30041-M025QFNR2.5V41M25TS30041-M033QFNR3.3V41M33TS30041-M050QFNR5.0V41M50TS30042-M000QFNRADJ42M00TS30042-M015QFNR1.5V42M15TS30042-M018QFNR1.8V42M18TS30042-M025QFNR2.5V42M25TS30042-M033QFNR3.3V42M33TS30042-M050QFNR5.0V42M50

author: hanakp
author_rank: Regular Contributor
timestamp: June 04, 2023, 08:40:54 am
content: Fun fact: Google blacklists this thread, likely because of my "insensitive" quip about mexican labor. Try it yourself, search for "41M18 Semtech". In Bing, DuckDuckGo, Yahoo or Lycos, this thread appears on the first page of results. In Google.cz, there are only 2 pages of results and this thread is not among them.But I guess it's not all that surprising, after 3+ years of brazen (and government-sanctioned) suppression of entire sites in the name of "fighting misinformation". One has to love the euphemisms they find for censorship.Eh, I think I'll just copy and paste the table to a new thread.

author: mariush
author_rank: Super Contributor
timestamp: June 04, 2023, 10:41:02 am
content: MCP16323 seems to have the same footprint and pinout :https://media.digikey.com/pdf/Data%20Sheets/Microchip%20PDFs/MCP16323.pdfprobably the last digit is used for other voltages. Also note that it's marked as obsolete, and the replacement MIC24046 is not using the same footprint.