I need to replace this component. I think it’s a MOV but I can’t figure out the markings. The circuit is from a vacuum cleaner. It uses about 33VDC. Any suggestions for a suitable replacement?
Thank you for contacting DigiKey , sorry I am not finding anything with the part markings for this part so I am not able to offer anything as a replacement without some specs .
Thanks Craig
If it’s a varistor you can remove it from the circuit and the product should work. It just won’t have any resistance to surge damage, so don’t use it too long, or during a thunderstorm to avoid downstream circuit surge damage.
The stylized “K” logo makes me think it might be an old Kyocera part from before the AVX merger.
How old is the product?
What is the diameter of the disc?
(diameter is usually directly proportional to power handling)
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I think it is “Resettable Fuses” 60 Volt, 0,60 A. 
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It very well could be a resettable fuse. Though I do not find the 600ma. We do have a part number of 118-MF-R065-2CT-ND on this link: MF-R065-2 Bourns Inc. | Circuit Protection | DigiKey
This is 650ma. The board location mark can be checked. I would say it should be marked with a F if this is a fuse.
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Thanks, that was the answer. I replaced the varistor with a 1.5 ohm resistor and the vacuum started working. So I’ll go shopping for a new varistor.
NO!
That means it is a resettable fuse not a varistor!
A varistor has infinite resistance under normal cricumstances.
I thought this was clear:
Somehow you took that as replace the varistor with a near short circuit. I consider myself, and you, lucky that what you did not cause a fire due to operating a device that blew a fuse with a bypassed fuse.
Immediately remove that resistor and don’t plug in that appliance again until you have a fuse back in place.
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Hi agpmailnospam ,
Click here for a list of resettable fuses to look over to see if one would work for you, however its hard to tell not knowing the original specifications. Alot of time, these resettable fuses are used for the spinning brush motor in case if it were to jam causing the motor to pull its max stall current which would save the motor from excess current damage. These should normally reset after power is cycled and rarely burn out, however it could be for the main board as well. Since we don’t know the original specifications, we can’t say for certain which fuse would ‘safely’ work in your application or to properly protect the motor or other components it is designed to do.
Thanks for your inquiry, please let us know if you have further questions.
Thanks for the information. Unfortunately this thread ended-up in my spam box and I just found it. The board is in fact marked with an “F”.
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