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Capacitor values 0402, 0805..

Discussion in 'Electronic Design' started by Boki, Jun 7, 2006.

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  1. Boki

    Boki Guest

    Hi All,

    0402 means 1uF


    0805 means 4.7uF?

    How to read it ?

    Thank you very much!

    Best regards,
  2. 0405 means that the dimensions (footprint) of the part are 4/100 inch
    by 2/100 inch.

    0805 means that the dimensions of the part are 8/100 inch by 5/100 inch.

    0402 and 0805 have nothing to do with the value of the part, or even
    if it is a capacitor, resistor, inductor, or diode.

    At least this is simpler than that a 2 by 4 is a piece of lumber 1.5
    inches thick and 3.5 inches wide.
  3. I live in the great U. S. of A. What's "metric"? ;-)
  4. The 'ordinary' 0402 is that, but there are also metric 0402 parts
    (0.4mm x 0.2mm), which are smaller than the 0201 parts. Chip/01005_Chip_Metric_0402.pdf

    Best regards,
    Spehro Pefhany
  5. Boki

    Boki Guest

    John Popelish 寫�:
    Got it, thank you very much !

    Best regards,
  6. kidkv

    kidkv Guest

    this program helps a " Electronics assistant " it has helped me out
    it has
    resistance capacitance, power, other
    makes it easy and best of all its free
  7. Roger

    Roger Guest

    Dunno, ask the rocket scientists who so successfully crashed a Mars
    probe :)
  8. You thing "standard" is bad, try looking into the idiots wh
    invented "whitman" sizing....Consult your loca
    Saab/Scania/Gillig dealership..

    At least we americans are the only ones stupid enough to mix englis
    with metric in our GM cars...Then again we voted Bush for presiden
    not once but twice....That's what you get for spending 45x more o
    defense than education..

    Yay republicans..................right
  9. The "standart" definition of "inch" and related confussion.

    Have fun

    Slack user from Ulladulla.
  10. mc

    mc Guest

    not once but twice....That's what you get for spending 45x more on
    You are blaming the Republicans for the size markings on capacitors??
  11. Rich Grise

    Rich Grise Guest

  12. That system you use to keep all the modern component dimensions from
    coming out with funny numbers. Like the 0402 that is actually 1mm x

    At 20,000 components per standard reel, the 'metric' 0402 = 01005
    parts are getting a bit much for anything but consumer products, but
    even then the packaging is most of the volume.

    A baseball-sized volume (~9" circumference) would hold..

    ((4/3) * (36.4mm)^3)/(0.4 * 0.2 * 0.13) = 4.6 million of them.

    Best regards,
    Spehro Pefhany
  13. mc

    mc Guest

    I live in the great U. S. of A. What's "metric"? ;-)

    The system that gave us the Japanese 2.5mm screw and the French 2.6mm screw,
    which aren't interchangeable.
  14. Pooh Bear

    Pooh Bear Guest

    What French 2.6 mm screw is that ?

  15. Fred Bartoli

    Fred Bartoli Guest

    Just mc's plain fantasy.
  16. The Japanese did come out with some kind of different '+' srew head
    than the Philips to avoid paying royalties, IIRC, but that's nothing
    to do with metric.

    The only 2.6mm screws I've spec'd were self-tapping or self-threading.

    Best regards,
    Spehro Pefhany
  17. ISTR 1.27mm allen headed grub screws

  18. Pooh Bear

    Pooh Bear Guest

    I think it's called 'ISO metric' IIRC.

    The + is shaped differently to Philips. Our Pozidrive or Supadriv screwdrivers
    fit it perfectly though and it gives a more positive drive.

  19. Guest

    Maybe marsians have a different thumbsize ..? :)
  20. Guest

    I thought he was blaming poor education for the existence of
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