Hello, I have build a case for Jetson. While assembling the case for Jetson Nano, one of the components from board fell off. And board is not booting right now. I couldn’t find the component unfortunately. With a little investigation i found out it is a capacitor. But i don’t know which is it? What is the code etc. Is it possible to find it and replace? My board is Rev A02 P3450.
It is hard to check based on your photo. Please share a zoom out photo with more info.
The brown one is the problem. The component at the right in the blue circle.
I just found this on internet. It is not my board.
It is a 47nF capacitor.
Thanks man, It is MLCC right? Does it have any code or specification or any voltage value of capacitor will be okey? I am not expert in electronics.
It’s MLCC, X5R, 6.3V, 10%, 0402.
Thank you so much, appreciated your help.
One more question. This capacitor is so spesific. Hard to find or have long delivery duration from manufacturers. Will 470nF okey or not? 470nF ±10% 6.3V MLCC X5R 0402 this is fastest one i can reach. I guess not, that is to much to handle for the board.
No, only 47nF is validated. You can try others, but it is not guaranteed by us.
Understood, thanks for your help and time.
Some more detail:
- Multi-layer Ceramic Capacitor.
- There is also a single layer ceramic capacitor design. Unless this is at higher RF frequencies single- versus multi- layer probably won’t matter. I’m only guessing, but probably this isn’t at a high enough frequency where this would matter (single- versus multi-; ceramic itself is probably very important; parasitic inductance changes depending on layer count, and at high enough frequencies that matters).
- 47 nF is 47x10^-9, but uF (micro) is more common, so you could find 0.047 uF. Also the same as 47000 pF, but nobody will list one as pF with that high of a value.
- The 0402 is just a size for surface mount.
- You can likely use one with a higher voltage than 6.3V, but it wouldn’t be necessary (and might mean the size gets larger).
- A typical Google search:
Google: “.047 microfarad” “0402” “ceramic” “capacitor”
Note: Google doesn’t always do this correctly, e.g., you might also see capacitors with “47” in the value, but wrong decimal place.
Unless you are used to soldering small components though you have a learning curve ahead of you (or maybe a “practice curve”). You’d want to use a solder with “no clean” flux instead of rosin flux, although you could use rosin if you can clean it correctly. A separate flux in liquid form would be useful because you have to clean the area off. Lots of YouTube videos on electronic repair would be useful.
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Thanks for you reply. That is great to know. I was not sure can i use more than 6.3V. If so i can find 10V or other values. And also i guess X5R is not need to be same. X7R can work as well. According to google :
X5R:** Can operate up to 85°C.
X7R:** Can operate up to 125°C.
So i can use X7R. That makes it easier for me to find.
Actually main problem is size. 0402 is really small version of a capacitor. But i will find anyway. I will not throw the board to the bin ofc.
Thank you!
6.3 V is the voltage the capacitor fails at. If it doesn’t fail until 10 V, that’s perfectly fine. Usually higher voltages change the physical size, but if it is still an 0402 size surface mount, and it is still ceramic, then it is likely a perfectly acceptable replacement.
Temperature limits are up to you for the temperature you’re going to operate at (and that temperature is always higher than the environment, and likely higher than you think it is). If the original fails at 85C, then 125C is good (there might also be a lower temperature limit to consider if operating outside in Antarctica!). Since other components are likely not rated to lower or higher temperatures it is probably a waste of money to get a better spec, but it wouldn’t hurt.
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