Schematics notation Q

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • jonoldsdev
    Member
    • Sep 2020
    • 26
    • USA

    #1

    Schematics notation Q

    On PR129, is K/F a unit of resistance for small values? Also, what does the "_4" mean? Thank you!!
    Attached Files
  • piernov
    Super Moderator
    • Jan 2016
    • 4435
    • France

    #2
    Re: Schematics notation Q

    "K" is for "kilo", here it's implied it is kiloohms for resistors.
    "F" is a tolerance code, 1% in this case.
    "4" is the package size, "0402" in this case. ("2" would be "0201")
    OpenBoardView — https://github.com/OpenBoardView/OpenBoardView

    Comment

    • jonoldsdev
      Member
      • Sep 2020
      • 26
      • USA

      #3
      Re: Schematics notation Q

      thank you so much!

      Comment

      Related Topics

      Collapse

      • JoSta
        Can somebody explane notation in schematics
        by JoSta
        I have been checking schematics for my motherboard and have difficulties to understand it. I figured that i need to replace the component designated with PQB03 on the board. In the schematics I find two entries with different components, although they have almost similar specs. I could not find an explanation for the prefixes "G1G3@" or "G2@"
        Can somebody help me?



        ...
        Yesterday, 12:05 PM
      • proxneo
        Recapping Sony ICF-SW55 - verifying cap values
        by proxneo
        Dear reader

        I am performing a repair on a Sony ICF-SW55, which includes recapping (some) of the SMD capacitors on the mainboard. I am looking for verification of their values. At the moment, I'm 95% sure I've got the right values, but it is hard to find some official, credible or multiple independant sources on this.

        At the moment, I have selected replacements based on the following list of values:

        3 x 470uF 10VDC
        3 x 4.7uF 35VDC
        4 x 47uF 50VDC
        8 x 22uF 6.3 VDC
        1 x 220uF 6.3VDC
        5 x 100uF 6.3VDC

        Which...
        06-21-2023, 12:38 AM
      • Kobok
        Different (lower) resistor values on PCB?
        by Kobok
        Dear Alls,
        For sure it id a stupid question, but help me to understand. I am in a Dell 2007WFP revitalizing project - searching reason why not starting. Some resistors needed to replaced is is obvious. When I have soldered some resistors the measured (with multimeter) values were sometimes rather different written on them. I supposed these are wrong units so I desoldered and made a checking measurement and voilá the values is the same is written on. This happens only in case of a few resistors, most have the same values (+/- 10%) are written on it. "strange" SMD resistors =>103...
        09-19-2022, 07:30 AM
      • Popalwali
        Asus Nexus 7 2012 (ME370T REV 2.4) Schematics needed
        by Popalwali
        Hello Everyone,

        I will be really grateful if someone shares schematics and if possible the boardview of the old Asus Nexus 7 (2012) Tablet. The motherboard is ME370T Rev. 2.4. Now I can find schematics for the Rev. 1.0 but I could not find the schematics for the Rev 2.4. I tried to look for similarities in the Rev. 1 but there are somethings missing, plus the board i have has nearly no component names printed on it which as a newbie makes pretty hard for me to locate things. Any assistance will be appreciated. Thank you.
        08-25-2024, 11:28 AM
      • Loading...
      • No more items.
      Working...