What SMD component does a 'B' stand for

O

ok2003

New Member

• Dec 16, 2007

• #1

There are several components on an ATI capture card with a B on the board beside them(B1, B2, B3 etc.) each has a cap beside it. No markings but they look like resistors. Sad to say but I've not seen this component before...what type of component would they be? Thanks

 

Last edited: Dec 16, 2007

justDIY

Active Member

• Dec 16, 2007

• #2

"B" is a package type for smd caps ... Panasonic B, etc, how about a picture to go with your bold text?

edit: my vote is for BEADS (see later posts)

 

Last edited: Dec 17, 2007

O

ok2003

New Member

• Dec 16, 2007

• #3

https://images.elektroda.net/70_1197823131.jpg

Notice B25 is missing

 

K

kchriste

New Member

Forum Supporter

• Dec 16, 2007

• #4

Did you take B25 off? Did it break off though handling, etc? It is quite common for a part not to be placed because it is for an option, etc. R66 and R105 are also "missing" but you shouldn't worry about it.

 

M

mister_e

New Member

• Dec 16, 2007

• #5

Solder for this specific B25 on the board seems weird.. but could be just an illusion.

B have to be ferrite Bead

 

B

boxer4

New Member

• Dec 17, 2007

• #6

Could also be 'B'ridge - a jumper of sorts? (to distinguish from 'J'ack?) ... Is it 0 ohms?

I wonder how much of an inductor you could make out of a device that small? Inductors are the plague of modern electronics it seems... then again I'm so out of board smt electronics now that I have no clue.

 

M

mneary

New Member

• Dec 17, 2007

• #7

We use a lot of ferrite Beads that look like that, usually label them 'FB'.

Leaf through the Digikey catalog; you'll find lots of inductors in small sizes.

 

S

Speakerguy

Active Member

• Dec 17, 2007

• #8

I'm 99% sure it's just a ferrite bead for EMI suppression. The miniature caps are probably for the same purpose.