I don't build 'em, I don't design with 'em, and now I know that zero ohm resistors don't even exist!
I talked to another tech here with 52 years on HP gear (Hewlett Packard/Agilent/Keysight). Like me, he didn't give zero ohm resistors much thought other than replacing them.
He said it's obvious to him, that when a circuit catasrophically fails on a board, the current can increase rapidly, and the zero ohm resistor opens to protect the other boards within the
instrument. So that makes two of us dummies who believe that. A wire doesn't open in that circumstance. So whether it was design intentional or not, that's the effect.
Hello Dennis,
We received the following message from you:
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Technical question. What is the purpose of the zero ohm resistors in your test and measurement equipment? I'm having a disagreement with a colleague who claims the zero ohm resistor is simply a machine-insertable replacement for a jumper-wire on the printed circuit board. I would like to know if the zero ohm resistor is intended for a specific electronic function, rather than to just make it easier for a machine to pick-up and insert than a thin jumper wire. Thanks, Dennis Jeffrey
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I apologize, but I'm not aware of any "zero ohm resistors" inserted in our test and measurement equipment. Especially the part about "a machine-insertable replacement for a jumper-wire on the printed circuit board". What circuit board or what Keysight instrument are you referring to? Please let me know so I can get your question to the proper support group. Thanks!
Regards,
Ron Knight
Inside Applications Engineer
Keysight Technologies, Inc.
Americas Technical Contact Center
Online Technical Services
800-829-4444, enter Case ID# 6260093854
I talked to another tech here with 52 years on HP gear (Hewlett Packard/Agilent/Keysight). Like me, he didn't give zero ohm resistors much thought other than replacing them.
He said it's obvious to him, that when a circuit catasrophically fails on a board, the current can increase rapidly, and the zero ohm resistor opens to protect the other boards within the
instrument. So that makes two of us dummies who believe that. A wire doesn't open in that circumstance. So whether it was design intentional or not, that's the effect.
Hello Dennis,
We received the following message from you:
*********************************
Technical question. What is the purpose of the zero ohm resistors in your test and measurement equipment? I'm having a disagreement with a colleague who claims the zero ohm resistor is simply a machine-insertable replacement for a jumper-wire on the printed circuit board. I would like to know if the zero ohm resistor is intended for a specific electronic function, rather than to just make it easier for a machine to pick-up and insert than a thin jumper wire. Thanks, Dennis Jeffrey
*********************************
I apologize, but I'm not aware of any "zero ohm resistors" inserted in our test and measurement equipment. Especially the part about "a machine-insertable replacement for a jumper-wire on the printed circuit board". What circuit board or what Keysight instrument are you referring to? Please let me know so I can get your question to the proper support group. Thanks!
Regards,
Ron Knight
Inside Applications Engineer
Keysight Technologies, Inc.
Americas Technical Contact Center
Online Technical Services
800-829-4444, enter Case ID# 6260093854