Author Topic: Mystery component  (Read 266 times)

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Offline shmashma

  • Newbie
  • Posts: 2
  • Country: au
Mystery component
« on: January 09, 2020, 12:00:57 pm »
Hi everyone,
I have a nice old surface mount component here with a crack in it.
I think it's probably a 50 ohm resistor because thats what I measured across. I'm not sure what LJ stand for, anyone?
 

Offline mvs

  • Regular Contributor
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  • Posts: 224
  • Country: de
Re: Mystery component
« Reply #1 on: January 09, 2020, 12:56:47 pm »
It looks like a thermistor (NTC or PTC). To be sure, you can heat it and measure resistance again.

50 Ohm NTC you may find in a small switched PSUs. It is used to limit inrush current.
« Last Edit: January 09, 2020, 01:00:08 pm by mvs »
 

Offline shmashma

  • Newbie
  • Posts: 2
  • Country: au
Re: Mystery component
« Reply #2 on: January 09, 2020, 02:52:56 pm »
Thanks, that's super helpful. The part is pretty erratic but I can raise or lower the resistance depending on the side I heat up so I'm confused.
 


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