component replacement arduino mega

Can anyone tell me what the CMS component and it's value is that I've highlighted in the attached image.
Following an accident the one on my Mega got broken and I need to replace it along with the USB connector.

Thanks in advance.

L1 on the diagram. An inductor of unknown value.
Connected between USB ground and USB shielding.
Properties: 0805 wuerth-elektronik BLM21
Leo..

That won't be easy to find I guess

Hi,
If it is an inductor, use a piece of wire to link it, it is there to provide a degree if noise suppression.
It is not an active part of the board such as switchmode or timing.

Tom.... :slight_smile:

BLM21, easy to find.
Maybe one rated for 500mA

I live in France but I found a supplier for this:

http://www.produktinfo.conrad.com/datenblaetter/700000-724999/709394-da-01-ml-744765133A_KERAMIK_SMD_INDUKT__WE__de_en.pdf

or this:

http://www.produktinfo.conrad.com/datenblaetter/1100000-1199999/001171735-da-01-en-CHIP_DROSSEL0805_2700R_200MA_2_0X1_25MM.pdf

Congratulations Bob!

II've a question though: is the time, effort and monetary costs of repairing your board actually less that buying a new Arduino?

ChrisTenone:
I've a question though: is the time, effort and monetary costs of repairing your board actually less that buying a new Arduino?

I would certainly hope so!

Just bridge it with a wire link. At some future point one might come across a suitable ferrite bead to put the wire through.

One little SMD part? Sure. Quick job with hot air rework station, or soldering iron, easy to change.
If you're already ordering parts, add some parts like that to your order.

I'm not really sure why those are needed. If you look at an FTDI Basic,

or a MIKROE-483, which I use for onboard USB/Serial on my Bobuino cards
http://www.mouser.com/ds/2/272/usb_uart_manual_v100-32094.pdf
there are no inductors there in the ground paths there; a FTDI Basic connected to a Promini is basically an Uno. A Mega is just an Uno with a different processor.

What do they do? I don't really know.

Paul__B:
I would certainly hope so!

Just bridge it with a wire link. At some future point one might come across a suitable ferrite bead to put the wire through.

I was thinking about the time involved. It's a hobby for me, so the longer it takes, the better. But if time is money, then I'd just get another Arduino.

The ferrite bead idea is cool, so I made this bead-on-the-cheap.

ChrisTenone:
The ferrite bead idea is cool, so I made this bead-on-the-cheap.

That looks as if it will be about ten times as effective as the original. (Performance of inductors is strictly proportional to bulk.)