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From a specifications perspective, the probes are identical. Both are 500 MHz, 10X passive probes. The P6139B can be used on oscilloscopes that shipped with the P6139A.
From a mechanical perspective, there are some differences:
- Sharper tip
- Ground spring attaches directly to the tip without the special sleeve used in the P6139A
- Alligator Ground lead attaches directly above the plastic sleeve and does not use the ground lead with the "donut"
- Sleek design
- Compliant to March 2011 safety updates (UL approved)
Tektronix p6139b probe
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