Electronic – What Electronic Component Marking On A Circuit Board Is Designated For BF

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While looking at ESR values for capacitors on a failed Samsung refrigerator circuit board I was looking over other components for telltale signs of failure and spotted an unusual component that I thought was at first a fried diode, but the marking next to it is BF1 which I've never seen before in any circuit board I've worked on.

I've checked the resistance and I'm getting about .02 ohms no matter what the polarity side is + or – on the leads tested.

What is that component labeled BF1? Is that a fried diode or something else? It has a tiny hint of dark ring on the far right. Where the leads come out of the component there seems to be distinct orange coloring on both ends.

Samsung electronic circuit board containing BF1 component in question.

Best Answer

The image you present doesn't present enough information but I highly believe it is a ferrite bead.

My reasoning:

  • The symbol being BF1 seems like short for Bead Ferrite 1
  • The texture of the component looks awfully like a Ferrite core, but inverted, thus a ferrite bead.

https://en.m.wikipedia.org/wiki/Ferrite_bead

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