Author Topic: zero Ohm Resistor  (Read 282 times)

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Offline Dragon-foot

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zero Ohm Resistor
« on: April 16, 2019, 06:10:53 am »
 Hello,

I have run into what I think is a zero ohm resistor, It looks like a half watt with one black strip. A pic is attached.
Please let me know if I'm on the right track.


Thanks
 

Offline Mr.B

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Re: zero Ohm Resistor
« Reply #1 on: April 16, 2019, 06:12:54 am »
Yes, it looks like a zero ohm resistor to me.
Yes, zero ohm resistors are a real thing.
Time is the overseer of all things.
 

Offline golden_labels

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Re: zero Ohm Resistor
« Reply #2 on: April 16, 2019, 06:43:37 am »
Dragon-foot: yes, you are right. They also exist in SMD version. 0Ω are used as jumpers. They are easier to use in automated environments: the same machine, that places resistors, may be used to make links. A minor advantage is that they do not require a separate footprint in PCB design software.
Worth watching: Calling Bullshit — protect your friends and yourself from bullshit!
 

Offline Brumby

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Re: zero Ohm Resistor
« Reply #3 on: April 16, 2019, 09:07:33 am »
As stated above, yes you are right.  It is a zero ohm resistor - for all practical purposes.  We can get all technical and say it isn't exactly zero because it's not a superconductor, but it's as close to zero as a piece of wire.

As well as jumpers, they can be used for configuration setting on a board or sometimes you might have a circuit that can have (something like) a current sense resistor in place for testing, but will work better with zero ohms in a production run.

For SMD boards, a zero ohm resistor can be positioned with a pick and place machine just like any other SMD component.
 

Offline Dragon-foot

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Re: zero Ohm Resistor
« Reply #4 on: April 16, 2019, 09:43:29 am »
Thanks all
 


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