What is this FL7 chip? - Page 1
Forum section: electronics / beginners

author: Igbeserk
author_rank: Newbie
timestamp: August 18, 2019, 01:53:51 pm
content: Hey guys newbie here and just having a hard time figuring what this part is that is in the picture. I'm trying to fix an atomiswave motherboard and the trace to the FL blew. Now someone told me in a atomiswave support forum that it is a 0.1uf ceramic capacitor smd. Problem is I cannot find any that look like that an and capacitor has two sides for me to solder but the FL has two sides and a side in the middle as well. Researching FL is a filter line? And the issue with the atomiswave is no video. Please any help or information on the part would be appreciated.Edit: Before the 3rd point on the FL7 chip completely disappeared before I had to remove it I used my multi meter and set it to ohms 200k, 20k, 2000, 200. under 200k i get various ranges from 08.00 to as low as 0.08 under 20k i get around 0.90 to 0.75 under 2000 i get 800 to 700 and under 200 it just is a 1. and i cannot be certain since the trace is broken and the area was burnt when i got it if the readings are good or not.

author: electricMN
author_rank: Regular Contributor
timestamp: August 18, 2019, 02:43:17 pm
content: Looks to be a filter similar to this.https://www.digikey.com/product-detail/en/murata-electronics/NFM21HC102R1H3D/490-14851-2-ND/2595179Lots of choices though.Solder a wire to the two large pads making sure not to short it to the center pad which is ground. That part is likely there purely for emissions purposes.

author: Igbeserk
author_rank: Newbie
timestamp: August 18, 2019, 02:57:59 pm
content: Quote from: electricMN on August 18, 2019, 02:43:17 pmHey, thanks for the response! so the middle one is ground or should be makes sense since it seems like the others do the same. in terms of that chip would it be 0.1uF / MFD 100nF 100000pF (MMFD) that I'm looking for or the one you specifically linked would work?Hey, thanks for the response! so the middle one is ground or should be makes sense since it seems like the others do the same. in terms of that chip would it be 0.1uF / MFD 100nF 100000pF (MMFD) that I'm looking for or the one you specifically linked would work?

author: electricMN
author_rank: Regular Contributor
timestamp: August 18, 2019, 03:19:27 pm
content: It's not possible to tell what the value is just by looking at the pictures. The one I linked to was just an example.

author: Igbeserk
author_rank: Newbie
timestamp: August 18, 2019, 03:23:41 pm
content: Quote from: electricMN on August 18, 2019, 03:19:27 pmI gotcha. alright so I have to measure the other ones to get a baseline reading to see what rating I need to order just to be safe. thanks!

author: electricMN
author_rank: Regular Contributor
timestamp: August 18, 2019, 03:26:10 pm
content: Quote from: Igbeserk on August 18, 2019, 03:23:41 pmOr just jumper the pads out as I suggested. The board will function the same, unless you're concerned about emissions.

author: Igbeserk
author_rank: Newbie
timestamp: August 18, 2019, 03:33:57 pm
content: Quote from: electricMN on August 18, 2019, 03:26:10 pmoh sorry I don't understand all the terms. I thought you mean to solder to the new chip when I got it., yea I can do that i'll bridge them and test it. thanks a lot!