crwdns2933423:0crwdne2933423:0

I desperately need to know a component and it's value.

Hi there, I desperately need to know the component and the value of the following unit so I can replace it in a OnePlus 7 Pro mainboard. It's Any idea? Thank you so much in advance!

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I desperately need to know the component and the value of this unit so I can replace it in a OnePlus 7 Pro mainboard.​

1) Any idea?​

I suspect that it might very well be either a 2.2 uF capacitor, or a 1 uF. It is connected to the VDD N-FET pin of a Samsung UFS.​

So, I think that it is a Samsung UFS V_DD N-FET pin 0201-sized grounding ‘MultiLayer Ceramic Capacitor’ (MLCC).

2) What would happen if I installed the 1 uF while a 2.2 uF capacitor was required, or vice versa?

Thank you so much in advance!​

I have not been able to find a OnePlus 7 Pro schematic, but have found one of the OnePlus 8 Pro with a Samsung KLUDG4UHDB-B2D1 UFS-3.0 (listing a 2.2uF); Oneplus-6 UFS 2.1 (listing a 1 uF but in parallel), which is most probably Samsung’s KLUDG4U1EA-B0C1 which the OnePlus-6T has which is also UFS-2.1, OnePlus-6 has UFS 2.1 2-LANE 64 GB / 128 GB / 256 GB editions, while OnePlus-6T has 128GB / 256GB editions, and there is only a half year release date difference ; and a OnePlus-3T with Samsung’s KLUCG4J1CB-B0B1 UFS-2.0 (stating that a 1 uF one should be used in case of a Samsung UFS). The OnePlus 7 Pro has a Samsung KLUEG8UHDB-C2D1 UFS-3.0. This makes me to conclude that it is most probably a 2.2 uF. I have added attachments of the schematic diagrams I could find. I have highlighted the V_DD I_Q line.

Any thoughts on this?

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crwdns2934089:0crwdne2934089:0 crwdns2934093:0crwdne2934093:0

crwdns2934109:0crwdne2934109:0

crwdns2889612:0crwdne2889612:0 0
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Thank you so much for your reply! Also, very quick haha! I have added an identifier!

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

crwdns2934285:0crwdne2934285:0

crwdns2933313:01crwdne2933313:0

crwdns2934057:0crwdne2934057:0

Here is a guess. Those caps are just bypass caps, not anything involved in setting a frequency. The 2.2 value is likely limited by size. Datasheet says 0.1 minimum with 1 recommended. Higher value will bypass lower frequencies but become less effective for higher frequencies. So, I would say it won't make much diff which one you use. Sometimes the value is selected by how many other parts of the same value are in it. So it might help measuring other similar parts.

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crwdns2889612:0crwdne2889612:0 1

crwdns2944067:02crwdne2944067:0:

Ah thank you for your answer! The size is a 0201 component.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

I have the part, but I am unable to measure it so far.

Maybe you can help me out, as I have no idea how to measure it.

The readings are quite all over the place.

This video is me trying to measure it on capacitance mode on a DER EE DE-5000:

https://youtu.be/yuof1fu6fRU?feature=sha...

Resistor measurement attempt:

https://youtu.be/xAOom--sgwg?feature=sha...

More close-up photos of the component: https://imgur.com/a/s3hCpFz

Photos of location of the board it came from:

A OnePlus 7 pro phone mainboard, in the right bottom corner of a UFS chip.

I took two pictures, in the second picture you can see me pointing at the location with a set of tweezers.

https://imgur.com/a/Lm4qOQX

I've added more pictures of the component I am trying to figure out over here: https://imgur.com/a/DUlGWZJ

If you have any idea how to determine what this component is and what it's value is I would be extremely thankful! 🙏

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RodyMens crwdns2934231:0crwdne2934231:0
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crwdns2936751:024crwdne2936751:0 0

crwdns2936753:07crwdne2936753:0 0

crwdns2936753:030crwdne2936753:0 7

crwdns2942667:0crwdne2942667:0 46