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Wrong Caps fitted, ok to use?

Discussion in 'General Electronics Discussion' started by andymitchell9999, Aug 24, 2012.

  1. andymitchell9999

    andymitchell9999

    2
    0
    Aug 24, 2012
    Hi all,

    I'm hoping someone can help me as this goes beyond my limited electronics knowledge. We have a DC bi-direction motor drive circuit using an SGS L6203 Driver IC. The circuit we are using is defined on page 12 (of 20) in the following PDF http://www.datasheetcatalog.org/datasheet/stmicroelectronics/1373.pdf. Our PCB manufacturer has incorrectly fitted some of the small caps around this circuit and I am trying to understand the implications of this.

    The ones that are wrong are as follows:

    The 220nF connected to pin 9 has a 22nF
    The 2 x 15nF connected to pins 8 and 4 are both 22uF
    The 22nF between the outputs on pin 1 and 3 is 22uF

    What sort of problems am I going to see with these incorrect values?

    Thanks in advance for any answers.
    Andy
     
  2. GreenGiant

    GreenGiant

    830
    5
    Feb 9, 2012
    are you sure that you are reading them correctly?

    did you have the parts specified for them to use?

    can you provide some pictures of the capacitors?

    the one on pin 9 there shouldn't be a huge issue (shouldn't not won't don't quote me on that), that looks like just a filter, the ones on 4 and 8 again seem to be filter caps, and are larger than suggested there.

    I would need to see pictures before seeing for sure
     
  3. andymitchell9999

    andymitchell9999

    2
    0
    Aug 24, 2012
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