0 ohm resistors

[Diarmuid]

On an audio circuit I am copying, there are a lot of resistors with just one line, a black one in the centre.  As in the colour code, black is 0 are all these resistors likely to be 0 ohms and thus can I just replace them with normal wire?

Thanks for your help

Diarmuid

[audioguru]

Yes.

[logan_dslasher]

huh!?! i never knew that!  :)  and i definitely haven't seen one.. so, they are just simply, JUMPERS! duh?! why would anyone want to manufacture them? what is their importance?

[ante]

Hi logan,

The machines which put together the pcb:s can recognize a dummy resistor but not a piece of bare wire. 

[audioguru]

Hi Logan,
The "zero ohm" jumpers are the same physical shape as a resistor so therefore are able to be handled and placed on a pcb by automated machines that install resistors on pcbs.
Same idea as Ante.

[logan_dslasher]

ahh... so that's what they are for... thanks  :) for the explanation, both of you..  8)

[hotwaterwizard]

Also sometimes a regular jumper will ark and a wire will melt off the insullation under heavy load conditions.

[indulis]

Typically they are used as jumpers on PCB's when cost has to be cheap, as in single sided or no thru plated holes. To put "ampacity" into perspective, it takes 10 amps to fuse a 30AWG wire.

[prateeksikka]

hi....

10 jumbers v/s 10 resistors....
where goes the cost of the system.well do u people say that these are used in automated systems which manufacture the PCBs by soldering the components?
thanks for reply in advance