0805 SMD question

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  • MaineFix
    Member
    • Jan 2023
    • 17
    • United States
    #1

    0805 SMD question

    Please correct me if I am wrong.

    I have what I believe is a capacitor. 0805 size.
    I have a full book of 0805 SMD so I'm pretty sure I have the one I need.

    I'm trying to identify what this is:

    HCB2012KF-121T50_0805
    5A 1 20m 25% 120@100MHz 0805 Ferrite Beads ROHS

    Could someone explain to me how to read this?

    Thank you in advanced.
    This community is awesome!
    Tags: None
    • MaineFix
      Member
      • Jan 2023
      • 17
      • United States
      #2
      Re: 0805 SMD question

      Okay, so I believe this is a ferrite bead which is just a component that reduces interference. So if I test both sides of this component should it be open as if it is a wire straight through?

        Comment

        • UNITRAX
          Senior Member
          • Jan 2023
          • 64
          • POLAND
          #3
          Re: 0805 SMD question

          Maybe this will help:

          https://www.schukat.com/schukat/schu...1SN1D&wg=D5419

          A ferrite bead is also commonly called a ferrite clamp. It's a passive device that improves your PCB's power quality, designed to suppress high-frequency signals on a power-supply line. They're typically placed around a power supply / ground line pair that's incoming to a specific device.
          Their principle use is as an EMI filter on power inputs, often on the input to a common-mode EMI filter circuit.

          BLM21AG121SN1D

          https://www.schukat.com/schukat/schukat_cms_en.nsf/index/CMSDF15D356B046D53BC1256D550038A9E0?OpenDocument&wg=D5419

            Comment

            • stj
              Great Sage 齊天大聖
              • Dec 2009
              • 30964
              • Albion
              #4
              Re: 0805 SMD question

              it's an inductor and should have a very low resistance

                Comment

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