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Reference.org
Zero-ohm link
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<p>A zero-ohm link or zero-ohm resistor is a <a href="/facts/Wire/yyy05H1S">wire link</a> packaged in the same physical package format as a <a href="/facts/Resistor/JrsGReM6">resistor</a>. It is used to connect traces on a <a href="/facts/Printed_circuit_board/muSR2p43">printed circuit board</a> (PCB). This format allows it to be placed on the circuit board using the same <a href="/facts/SMT_placement_equipment/EWaTA3ce">automated equipment</a> used to place other resistors, instead of requiring a separate machine to install a <a href="/facts/Jumper_(computing)/dmQvs4ck">jumper</a> or other wire. Zero-ohm resistors may be packaged like cylindrical resistors, or like <a href="/facts/Surface-mount/SjFyQbbm">surface-mount</a> resistors. </p>