Name that component!? - Page 1
Forum section: electronics / beginners

author: claytonedgeuk
author_rank: Contributor
timestamp: March 25, 2022, 10:00:00 pm
content: Hi thereCan anyone provide some guidance on what this component is and/or who makes it?https://imgur.com/a/WYbK8r8It's from a Motorola TLKR T60 walkie talkie - and it's released it's magic smoke...and now no longer so much as powers on. It appears to be marked S2NI (it's twin walkie talkie that does work is marked S2NH).Full disclosure - I tried hooking this up to dedicated smart nicad charger - and the charger complained and followed with a tiny release of smoke. So perhaps it's a voltage regulator?The logo for the component manufacturer appears to be a moon, or a kiwi, or a monochrome rainbow or something - but I've not had any success tracking it down that way either. Unable to find a datasheet with the S2N, S2NI, or S2NH. Perhaps the final character is a date stamp or something?Help or pointers appreciated.Clayton.

author: tooki
author_rank: Super Contributor
timestamp: March 25, 2022, 10:40:28 pm
content: My hunch was that S2 is the marking and the lasttwodigits the date code. A quick search for “s2 sot325” turned up this pagehttps://www.s-manuals.com/smd/s2, of which the following item looks very promising, given that marking and date code format, pin count, and nearby silk screen all agree:https://www.s-manuals.com/pdf/datasheet/l/a/la9010_r01_inno.pdf

author: claytonedgeuk
author_rank: Contributor
timestamp: March 25, 2022, 11:13:33 pm
content: Thanks Tooki - excellent suggestion. Appreciate that.

author: amyk
author_rank: Super Contributor
timestamp: March 26, 2022, 12:19:28 am
content: Quote from: tooki on March 25, 2022, 10:40:28 pmA 4.2V lion charger, in a product that uses NiMH batteries? The company logo isn't even close either.No, what you have is anME6211C33M5G. Search for images of this part and you'll see the match.This is the second time within this week I've seen that logo...

author: tooki
author_rank: Super Contributor
timestamp: March 26, 2022, 12:38:29 am
content: Quote from: amyk on March 26, 2022, 12:19:28 amI don’t know anything about the battery type in the walkie. I simply proposed acandidate(my exact word being “promising”). It’s certainly not unreasonable to think it could be a charger IC when one of the nearby pads on the board is BAT-.It’d still be incumbent on the OP to verify circuit design, etc., and in this case, the contradictory battery chemistries would throw up a red flag. That’s the OP’s job, not mine, so don’t lash out at me!Quote from: amyk on March 26, 2022, 12:19:28 amIt’s not a facepalm for the logo to not match. Companies can (and do) change their logos over time, you know! Or a company gets bought out, or sells a product line… many reasonsotherthan facepalm-worthy stupidity for a logo to not match.Quote from: amyk on March 26, 2022, 12:19:28 amI agree, it looks like a more likely candidate for what the OP (not me!) has, based on images. (The datasheet, on the other hand, doesn’t describe marking them with “S2”.)Quote from: amyk on March 26, 2022, 12:19:28 amWell aren’t you special!

author: claytonedgeuk
author_rank: Contributor
timestamp: March 26, 2022, 07:24:02 am
content: Look it's a bit of a challenge trying to track this down, and it's really helpful for me to go through the thought process you both have of trying to find out what the heck it is.

author: claytonedgeuk
author_rank: Contributor
timestamp: March 26, 2022, 07:28:36 am
content: ...I have been dreading needing a covid impossible to source component...which this might be....but it looks like the esp8266 has one of them on it. I'm sure I have one of those I can sacrifice! 🙂👍

author: jpanhalt
author_rank: Super Contributor
timestamp: March 26, 2022, 08:45:15 am
content: Why destroy something that presumably is working? It's a 3.3V fixed voltage LDO regulator with an enable pin. There are a fair number of similar devices. The MC5205 is just one such device.NB: The connection to pin4 is optional.

author: claytonedgeuk
author_rank: Contributor
timestamp: March 26, 2022, 09:02:07 am
content: Fair call! I'll see what I'm able to track down locally.

author: tooki
author_rank: Super Contributor
timestamp: March 26, 2022, 01:12:32 pm
content: Quote from: claytonedgeuk on March 26, 2022, 07:28:36 amHuh? They’re readily available on AliExpress, etc.