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Thread: What component is this?

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    What component is this?

    I need help identifying this component. I'm try to troubleshoot a simple pcb armed with my dmm. I've seen it loads of times but I don't know what its called!



    Its the large brown component behind the blue resistor.

    iceze

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    Re: What component is this?


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    Re: What component is this?

    its an 82K cap probably EF8 on the above page.
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    Re: What component is this?

    Thanks guys.

    Any ideas what the markings mean(farads?)? ( 824k 400V )

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    Re: What component is this?

    824k =

    8 2 0000 pF with tolerance of +/-10&#37;

    the capacitor markings are similar to resistors but using numbers instead of colour bands

    so the first number in the code (in this case 8) gives the first value
    the second number gives the second number of the value (in this case 2)
    and the third number gives the multiplier (in this case 4)
    and the letter on the end signifies the tolerance of the cap (which in this case is 'k' which means +/-10%)

    but caps codes are measured in pico Farads...

    so the value is 820000 pico Farads
    which = 820 nano Farads (nF)
    or 0.82 mF (micro Farads)
    or 0.00082 F (Farads

    but sometimes you just get the pure value stamped on.. such as 4n5 which means that it is a 4.5 nano Farad cap (the position of the letter shows the decimal point)

    caps often have the material stamped on them aswell

    Code:
    Marking  &#166;	Material
    
    MKT 	Metallised Polyester (PETP)
    MKC 	Metallised Polycarbonate
    KT 	Polyester Film / Foil
    KS 	Polystyrene Film / Foil
    KP 	Polypropylene Film / Foil
    MKP 	Metallised Polypropylene
    Code:
    Tolerance Code &#166; Tolerance
    
    C 	+/- 0.25pF
    D 	+/- 0.5pF
    F 	+/- 1%
    G 	+/- 2%
    J 	+/- 5%
    K 	+/- 10%
    M 	+/- 20%
    Z 	- 20% +80%
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    Re: What component is this?

    Great info. Didn't know capacitors had markings similar to capactors. Always thought that they only had the face value. Thanks!

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