Need help with part markings - Page 1
Forum section: electronics / repair

author: fzabkar
author_rank: Super Contributor
timestamp: October 28, 2023, 12:38:30 am
content: I have been asked to identify the ICs in an SK hynix Beetle X31 1TB SSD.https://imgur.com/a/FdKAsNv(images)I believe "FUF" is a stepdown converter:The pinout appears to be ...1 - Enable2 - ?3 - Feedback4 - Ground5 - Lx6 - VinI suspect FTJ and FU8 are also stepdown converters, probably from the same manufacturer, and possibly with similar pinouts.GD Q3EE is a GD25Q40EEIG serial flash memory.28 is a stepdown converter. I have confirmed, by reference to other PCBs, that 3Z is a date/batch code.I have no idea about JK or S or Y34F+2892.

author: tooki
author_rank: Super Contributor
timestamp: October 28, 2023, 01:26:12 pm
content: And what has your own research turned up so far? People will help if you get stuck, but we’re not gonna do the whole job for you.

author: fzabkar
author_rank: Super Contributor
timestamp: October 28, 2023, 04:45:45 pm
content: Quote from: tooki on October 28, 2023, 01:26:12 pmI don't have the SSD. All I have is what you see. I'm trying to help the person who maintains this SSD database:https://www.techpowerup.com/ssd-specs/I have provided a probable pinout, and I have identified one of the ICs.

author: amyk
author_rank: Super Contributor
timestamp: October 29, 2023, 03:25:55 am
content: Unfortunately, Google has beenabsolutely shitrecently for finding anything with any amount of detail, including part markings.Quote from: tooki on October 28, 2023, 01:26:12 pmGive him some slack; he's helped a lot of others with part identification in the past.I've checked my archive of the infamous Russian site and can't find anything matching either

author: fzabkar
author_rank: Super Contributor
timestamp: October 29, 2023, 08:11:56 pm
content: I had a lot of trouble finding the GigaDevice part. I suspected that it was in fact a GigaDevice SPI flash memory, but even after I found the datasheet, there was no part marking info. Instead, I had to infer the identity by reference to photos of similar parts at AliExpress.GD25Q40CEIG -> marking Q3CE ->https://www.aliexpress.com/item/1005005621492189.htmlGD25Q80CEIGR -> marking Q4CE ->https://www.taobao.com/list/item/650510427887.htmGD25Q80EEIG -> marking Q4EE ->https://www.aliexpress.com/item/1005005529581414.htmlGD25Q16CEIG -> marking Q5CE ->https://www.amazon.com/-/he/dp/B0B5VMBMNMGD25Q16EEIGR -> marking Q5EE ->https://www.aliexpress.com/item/1005005773269624.htmlGD25Q40EEIG, GigaDevice, 4Mbit SPI flash, 2.7V - 3.6V, marking Q3EE, USON8:https://www.gigadevice.com.cn/Public/Uploads/uploadfile/files/20220714/DS-00538-GD25Q40E-Rev1.0.pdfIt's a different marking style (font and dot/dash codes), but this may be the "FTJ" part:RT8016GQW, Richtek, 1.5MHz, 1A, High Efficiency PWM Step-Down DC/DC Converter, 2.5V - 5.5Vin, marking FTx, WDFN-6L 2x2:https://www.richtek.com/assets/product_file/RT8016/DS8016-04.pdfhttps://www.rom.by/files/Richtek_Marking_Code.PDF(marking FT)https://ae01.alicdn.com/kf/H8948a44fc0cb49b494d5e9bc19676a68Y/New-Original-RT8016GQW-print-FTJ-FTH-FT-QFN6-In-Stock.jpg(photo)

author: fzabkar
author_rank: Super Contributor
timestamp: October 30, 2023, 05:03:36 pm
content: [Very bad] photos of the SSD and the bridge PCB:https://imgur.com/a/rEu2XbmI almost wanted to give up but ...Y347 + 2892 is made by Global Mixed-mode Technology Inc.There is an image of a Y34A + 2892 part here (also an image of 2898):http://www.gmt.com.tw/http://www.gmt.com.tw/images/gmt_home.jpgI suspect the part number is G2892. However, the site search finds nothing.http://www.gmt.com.tw/product/SearchPN.phpMy guess is that it is a 5V e-fuse or current limit switch or high side load switch.G2898 is a dual high side load switch (14-pin):https://datasheet.lcsc.com/lcsc/1912111437_GMT-Global-Mixed-mode-Tech-G2898KD1U_C356810.pdfhttps://ae01.alicdn.com/kf/Se38e05f89fe24288b32275ddc8290b7fO/5-10pcs-100-New-G2898KD1U-G2898-2898-QFN-14-Chipset.jpg(photo)