Help Identifying component - Page 1
Forum section: electronics / repair

author: Jetbattalion
author_rank: Newbie
timestamp: July 17, 2024, 09:35:04 pm
content: I believe this is a mosfet. It is getting 5v in on pin2 and ground on pin5. Can anyone help me find the specs, or possibly a suitable replacement?

author: wasedadoc
author_rank: Super Contributor
timestamp: July 17, 2024, 09:38:04 pm
content: D49 is written beside it. Why do you think it is a FET?

author: Jetbattalion
author_rank: Newbie
timestamp: July 17, 2024, 09:54:10 pm
content: Thanks for the reply. I haven't seen very many diodes in that 6 pin sot23, but I know they are common. I don't have a good reason for believing it is a mosfet. It very well may be a diode, google results also assume that is what it is. I want to make sure I at least put one back that is close to spec

author: wasedadoc
author_rank: Super Contributor
timestamp: July 17, 2024, 10:00:32 pm
content: I would guess it is 3 diodes. Have you tried diode test 1-6, 2-5 and 3-4? (Power off of course.)

author: fzabkar
author_rank: Super Contributor
timestamp: July 17, 2024, 10:01:10 pm
content: Quote from: Jetbattalion on July 17, 2024, 09:35:04 pmTVS diode array for ESD protection?https://www.alldatasheet.com/datasheet-pdf/pdf/523743/PANJIT/PJUSBLC6-2W6.htmlUSB 2.0?

author: Kurets
author_rank: Regular Contributor
timestamp: July 17, 2024, 10:07:48 pm
content: Yes, thats exactly what is is likely to be. The pins 1+6 and 3+4 are connected internally allowing you to pass through the device, ensuring that the shortest path to gnd/5V is through the clamping diodes.

author: wasedadoc
author_rank: Super Contributor
timestamp: July 17, 2024, 10:08:17 pm
content: Quote from: fzabkar on July 17, 2024, 10:01:10 pmThat doesn't quite align with the second sentence of the opening post. Pin 1 is the one nearest the white dot on the PCB.

author: fzabkar
author_rank: Super Contributor
timestamp: July 17, 2024, 10:11:45 pm
content: Quote from: wasedadoc on July 17, 2024, 10:08:17 pmIt does, if you rotate it 180 degrees. :-)Edit:It should be said that the device should work if the diode array is removed, albeit without ESD protection. You may need to bridge the inputs and outputs.

author: RodentManiac
author_rank: Newbie
timestamp: July 18, 2024, 01:01:59 am
content: My apologies, my coworker had submitted this question for me(my activation was stuck in spam limbo). Yes I had the pinout upside down. Pin 2 is ground, pin 5 is 5v. Does anyone by chance have a suggestion for replacement? The component is part of the camera circuit for a self cleaning vacuum, as well as a birthday present for the 19th. Any help is appreciated.

author: fzabkar
author_rank: Super Contributor
timestamp: July 18, 2024, 01:30:28 am
content: Quote from: RodentManiac on July 18, 2024, 01:01:59 amhttps://www.st.com/resource/en/datasheet/usblc6-2.pdf

author: RodentManiac
author_rank: Newbie
timestamp: July 18, 2024, 02:06:40 am
content: Amazing help as always. It looks like that one isn't made anymore, but I believe the USBLC6-2SC6Y for the sot23 package is its successor. I will pick a few up. Thanks EVERYONE! You are amazing, and I owe each of you a cup of coffee.

author: wraper
author_rank: Unknown
timestamp: July 18, 2024, 02:19:47 am
content: ^Nothing is obsolete. SC6 is packaging suffix, Y suffix is automotive qualified variant which you don't need. The regular part is USBLC6-2SC6.