Is this the so called zero ohm resistor?

[sdancer75]

Is this a zero ohm resistor? My dmm shows 19kohm

[oPossum]

That is a thermistor.

[sdancer75]

Are you sure ? Check this link at wiki they seem identical

https://en.wikipedia.org/wiki/Zero-ohm_link

[mikerj]

Are you sure ? Check this link at wiki they seem identical

https://en.wikipedia.org/wiki/Zero-ohm_link

The component on your board has a glass package, the zero ohm link in the wikipedia picture is a ceramic part.  I agree with oPossum, it looks very much like an axial thermistor.

[ogden]

Are you sure ? Check this link at wiki they seem identical

https://en.wikipedia.org/wiki/Zero-ohm_link

Far from identical. Following looks much more "identical":

https://www.littelfuse.com/products/temperature-sensors/leaded-thermistors/glass-encapsulated-thermistors.aspx

[Kilrah]

The band on the zero ohm resistor is a marking. There is no printed band on your component, you just see the 2 halves of the innards through the glass.

And your DMM measures 19K, which is not 0.

[sdancer75]

Are you sure ? Check this link at wiki they seem identical

https://en.wikipedia.org/wiki/Zero-ohm_link

Far from identical. Following looks much more "identical":

https://www.littelfuse.com/products/temperature-sensors/leaded-thermistors/glass-encapsulated-thermistors.aspx

That's it ! Thanks

[sdancer75]

The band on the zero ohm resistor is a marking. There is no printed band on your component, you just see the 2 halves of the innards through the glass.

And your DMM measures 19K, which is not 0.

Thought of bad resistor.....

[Kilrah]

It would be burnt to hell if it had broken.
Also I've never seen a resistor in such a glass package.

[Howardlong]

Then there is the ultimate nerd and pedant paradox, it can’t be a resistor if it’s zero ohms.

[helius]

Then there is the ultimate nerd and pedant paradox, it can’t be a resistor if it’s zero ohms.

Even a (normal) conductor can't be zero ohms! Only superconductors can.
But in practice we only care about resistances that visibly affect the circuit. In low-power or signal circuits, several milliohms is as close to zero that the difference isn't significant. In high-power delivery systems, those milliohms matter a lot more.

[Kilrah]

Then there is the ultimate nerd and pedant paradox, it can’t be a resistor if it’s zero ohms.

We should probably call it the "insignificant resistor" then... or "packaged wire" 

[Bud]

Put your finger on it while measuring, problem solved.

[Gyro]

Then there is the ultimate nerd and pedant paradox, it can’t be a resistor if it’s zero ohms.

I have to admit that I find the fairly common practice of suppliers listing them as +/- 5% tolerance is rather amusing. Definitely worth getting a batch and weeding out those -5% ones.

[ogden]

Then there is the ultimate nerd and pedant paradox, it can’t be a resistor if it’s zero ohms.

I have to admit that I find the fairly common practice of suppliers listing them as +/- 5% tolerance is rather amusing. Definitely worth getting a batch and weeding out those -5% ones.

0R with proper datasheet have non-zero resistance specified. In result +/-5% spread do not look weird anymore and you can put away your free energy generator plans.

[RoGeorge]

I don't see a zero ohm resistor, that's a thermistor.

19 Kohm at room temperature is a common value.  Heat it with the finger or with something else while measuring its value and you should see how the resistance changes.

[soldar]

I have to admit that I find the fairly common practice of suppliers listing them as +/- 5% tolerance is rather amusing. Definitely worth getting a batch and weeding out those -5% ones.

Think again. No matter how small the value, even zero, you will never get a negative value by subtracting 5%. Or 50%.