SMD choke and questions about it

Discussion in 'The Projects Forum' started by jm-a, Mar 27, 2011.

  1. jm-a

    Thread Starter Active Member

    Oct 20, 2010
    105
    2
    Hi all,

    Need to add , a choke between an igbt module and brushless motor, in order to protect the component.

    On my burnt card, value is really 681 µH , +- 20 % I guess.

    I'd like to know if following items are good for the job:


    http://uk.farnell.com/epcos/b82615b2602m001/choke-ring-core-0-7mh-6a/dp/1644776

    I'm in doubt, i think it's a comon mode choke ....


    Now , about SMD:

    http://uk.farnell.com/wuerth-elektronik/74459268/choke-smd-680uh/dp/1636109

    After a lot of "googling" , I didn't find any information about using and placing it, on a pcb.

    Has anyone any idea or some link to an " how-to" ?

    Thanks a lot.

    jm
     
    Last edited: Mar 27, 2011
  2. Adjuster

    Well-Known Member

    Dec 26, 2010
    2,147
    300
    If it is a choke, its value will be measured in Henries. You could therefore have a 680μH choke, but not 680μF: Farads measure capacitance.
     
    jm-a likes this.
  3. jm-a

    Thread Starter Active Member

    Oct 20, 2010
    105
    2
    Hi,

    Thanks adjuster, i made a mistake, but yes it's really a choke.

    Thanks a lot.

    jm
     
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