HP PROBOOK 450 G5 da0x8cmb6e0 need ratings components

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  • misha97123
    Member
    • Feb 2021
    • 36
    • Qazaqstan

    #1

    HP PROBOOK 450 G5 da0x8cmb6e0 need ratings components

    Hello, who can help identify the elements, this is a capacitor and a resistor in the picture, what is their ratings on usb board
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  • mon2
    Badcaps Legend
    • Dec 2019
    • 14047
    • Canada

    #2
    Re: HP PROBOOK 450 G5 da0x8cmb6e0 need ratings components

    The referenced parts appear to link to the USB connector and specifically, the EMI shield.

    Review the following reference diagram and you should be able to trace the pads to confirm that these parts are for EMI grounding of the USB metal shell / pads.

    https://electronics.stackexchange.co...hield-on-a-pcb

    Comment

    • misha97123
      Member
      • Feb 2021
      • 36
      • Qazaqstan

      #3
      Re: HP PROBOOK 450 G5 da0x8cmb6e0 need ratings components

      1pin resistor is 5vusb , 2pin is gnd, thx for attachment
      Last edited by misha97123; 09-19-2022, 09:35 AM.

      Comment

      • mon2
        Badcaps Legend
        • Dec 2019
        • 14047
        • Canada

        #4
        Re: HP PROBOOK 450 G5 da0x8cmb6e0 need ratings components

        If you are confident that the resistor is on Vbus then it is a bleed resistor to allow for the Vbus to discharge to 0v when it is not powered / local USB load switch is OFF on the PCB.

        Apply a 20k-30k resistor that can fit onto this size of pads. Try 0402 or 0603 SMD size for this resistor.

        Comment

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