[SI-LIST] Re: milliohm measurement probe and cable

  • From: steve weir <weirsi@xxxxxxxxxx>
  • To: si-list@xxxxxxxxxxxxx
  • Date: Thu, 09 Oct 2014 11:14:37 -0700

What happens when you run calibration tests on your four wire probes?

Steve.

On 10/9/2014 10:11 AM, ben chia wrote:
> Hi All,
>
> I try to measure the package VCC or VSS resistance to match the simulation
> report from vendor. Vendor said that the resistance should be less than 2
> milliohm from bump to ball. The setup in my lab is Agilent multi-meter ( up
> to 1 milliohm resolution, 4 wire ). I use GGB 40A 150um center pin to touch
> the bump. A 26G coax cable to connect the probe to multi-meter. The measured
> result is stable up to 1-2 milliohm, but resistance value is more than tens
> of milliohm. Can anyone recommend a different setup?
>
> Thanks,
>
> Ben Chia
> High Speed Design Center
> www.HighSpeedDC.com
>
>
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