Tektronix
The Tektronix P 6139 A is a 500 MHz voltage probe. The Tektronix P 6139 A has an 8 pF input capacitance and 10 MOhm input resistance. The Tektronix P 6139 A is rated for 300 V.[1]

The Tektronix P 6139 A is a voltage probe.[1]
A voltage probe connects a measurement instrument to a circuit node and presents the signal in a form suitable for observation or analysis.
A probe in this class is designed to measure voltage while limiting its loading effect on the circuit under test.
A voltage probe is used in electrical test workflows during bench evaluation, debugging, and validation of circuits and assemblies.
A probe of this class sits between the device under test and the measuring instrument.
A voltage probe is used for signal observation on electronic circuits and assemblies.
A probe of this class is used in general electrical troubleshooting and measurement tasks.
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The Tektronix P 6139 A is a voltage probe.[1]
The following facts about the P 6139 A Voltage are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the P 6139 A Voltage are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the P 6139 A Voltage are on record.
Answerable by: an OEM product catalog or an engineer who ordered or specified the tool
The control-system platform and OS era of the P 6139 A Voltage are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the P 6139 A Voltage are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the P 6139 A Voltage is not on record.
Answerable by: an OEM datasheet or a fab qualification report
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Last updated Oct 8, 2026.
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