What is the way to figure out what kind of SMD fuse are on a motherboard !
Do i need the schematic or ... !
I need very very tiny fuses black on a middle and silver on both ends !
Around 0.5mm .
Where I can order them from ?
Its for laptop mobo . Thanks

 

Fuses are rated for the current they open for, and the voltage they block, in addition to their size (and several other parameters...). To pick a replacement fuse you need to know what your circuit runs at, and what voltage needs to be blocked.

Digikey sells SMD fuses as does several other distributors.

Keep in mind you may find something else down the line failed causing the fuse to blow in the first place. You may want to use a fuse of whatever rating you think it needs that you can obtain locally and jumper it into place just to check the motherboard still has some life left.

 

Fuses are rated for the current they open for, and the voltage they block, in addition to their size (and several other parameters...). To pick a replacement fuse you need to know what your circuit runs at, and what voltage needs to be blocked.

Digikey sells SMD fuses as does several other distributors.

Keep in mind you may find something else down the line failed causing the fuse to blow in the first place. You may want to use a fuse of whatever rating you think it needs that you can obtain locally and jumper it into place just to check the motherboard still has some life left.

Yes i did , but there aren't pictures of any smd fuses !
this is the problem i don't know which to pick up !

 

Do you really need pictures? You could use the parametric search function at Digi-Key or Mouser to filter just your specs. For instance select the size of fuse, mounting style, voltage, and current. Then you can see a smaller range of fuses and get some specific datasheets to verify it is what you need.

 

Do you really need pictures? You could use the parametric search function at Digi-Key or Mouser to filter just your specs. For instance select the size of fuse, mounting style, voltage, and current. Then you can see a smaller range of fuses and get some specific datasheets to verify it is what you need.

Thanks for your advice .

 

I think is this one !
http://www.digikey.com/product-detail/en/SF-0402F050-2/SF-0402F050-2CT-ND/1948184

How to figure out what is the Current Rating ?

 

From the link you posted :

Current Rating = 500mA

Other ratings are available

 

From the link you posted :

Current Rating = 500mA

Other ratings are available

yes but there are other ratings !
I need to know exactly the right rating.
There is also Response time , Melting i2t .
How its works ?

 

yes but there are other ratings !
I need to know exactly the right rating.
There is also Response time , Melting i2t .
How its works ?

If you look at the page you posted there is a link to the Datasheets. Digikey always does that.

If the information you seek is not there then we would not know it.


http://www.bourns.com/data/global/pdfs/sf0402f.pdf

 

If you look at the page you posted there is a link to the Datasheets. Digikey always does that.

If the information you seek is not there then we would not know it.


http://www.bourns.com/data/global/pdfs/sf0402f.pdf

Thanks i got it !