Help to identify 8 pin IC - Page 1
Forum section: electronics / repair

author: nikolayu
author_rank: Newbie
timestamp: December 08, 2023, 10:47:31 pm
content: Hello everyone.I need help identifying and replacing a burnt IC.The device is a Garmin dezl 870 with a charging problem (not charging). I opened it and I see that one IC is burnt so I can't read what it is so I can replace it.Does anyone know what model it might be?

author: ArdWar
author_rank: Frequent Contributor
timestamp: December 09, 2023, 12:44:20 am
content: https://www.ti.com/product/TPS2115A

author: nikolayu
author_rank: Newbie
timestamp: December 13, 2023, 06:45:41 pm
content: Tnx for info.I just saw that on other side I have also burnt component (I think its ag1 like the one on left side), but I'm unable to find what is it. Do you know what part is that?

author: coromonadalix
author_rank: Super Contributor
timestamp: December 13, 2023, 07:13:05 pm
content: seems the same since we see a small bit of the numbers on the burnt one ??

author: nikolayu
author_rank: Newbie
timestamp: December 13, 2023, 07:25:56 pm
content: It's look like the same but I don't know what component AG1 is so I can order it and replace.

author: fzabkar
author_rank: Super Contributor
timestamp: December 13, 2023, 07:57:11 pm
content: http://markingcodes.com/search/c/agMT6L51AE, MT6L51AT -- Toshiba NPN dual transistorhttp://www.rf-china.com/pdfseries/partsepdf/191.pdf

author: coromonadalix
author_rank: Super Contributor
timestamp: December 13, 2023, 09:34:20 pm
content: give me this loll but not an sot-323 6 pins ??AG1GA4A3QNEC ElectronicsSOT-323NPN transistorSw, 60V, 100mA, 200mW, R1/R2=1k/10ki would vouch for the previous answerif you have an ohm meter or diode test ...

author: fzabkar
author_rank: Super Contributor
timestamp: December 13, 2023, 10:00:41 pm
content: If it helps, "KD + Y" appears to be an NTK3139PT1G P-ch MOSFET.https://www.onsemi.com/pdf/datasheet/ntk3139p-d.pdfhttps://ae01.alicdn.com/kf/He1282cbb1207433d943f99f5d1c75bd5v/Diodo-de-protecci-n-antiest-tica-nuevo-y-Original-NTK3139PT1G-KD-SOT723-20V-750mA-MOS-FET.jpg

author: nikolayu
author_rank: Newbie
timestamp: December 13, 2023, 10:32:50 pm
content: This is 3 pin.One from picture is 6 pinhere are the readings both diode and ohms

author: fzabkar
author_rank: Super Contributor
timestamp: December 13, 2023, 10:41:37 pm
content: Pins 2 and 3 look like Ground and Vcc, respectively. If so, then that would invalidate my previous guess.

author: DavidAlfa
author_rank: Super Contributor
timestamp: December 14, 2023, 05:13:57 am
content: "aG" is 74AUP1G332GW, but it seems very explicit about the "A" in lowercase.

author: nikolayu
author_rank: Newbie
timestamp: December 15, 2023, 06:05:52 pm
content: Here additional details that I found.Its something with USB pins.I found AG1 at USB port.

author: fzabkar
author_rank: Super Contributor
timestamp: December 15, 2023, 08:23:46 pm
content: It looks like it must be an ESD protection component, perhaps a TVS diode array?Could it be something like this?https://www.farnell.com/datasheets/89316.pdf

author: DavidAlfa
author_rank: Super Contributor
timestamp: December 16, 2023, 06:46:19 am
content: Yeah totally seems the case.