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500 MHz Passive Probes

P6139B · P5050B

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The P6139B and P5050B probes are high bandwidth, high impedance 10X passive voltage probes with 10 MΩ input resistance. These probes feature a small probe head and sharp tip that makes it easier to probe dense circuitry. The P6139B and P5050B share similar electrical specifications but support Tektronix oscilloscopes with different compensation ranges. Visit theOscilloscope Probe & Accessory Selector Tool located ensure the correct probe is selected for your oscilloscope.

Key performance specifications
  • 500 MHz probe bandwidth
  • Large input impedance at the probe tip (10 MΩ, 8pF)
  • 10X attenuation factor
  • 300 v CAT II input voltage
Ease-of-use features
  • Compact probe head for probing small geometry circuit elements
  • Small probe body for enhanced visibility to the Device-Under-Test
  • Replaceable probe tip cartridges
  • Large accessory set for versatile connectivity
  • P6139B and P5050B feature the TekProbe interface for direct BNC connection for oscilloscopes with 1 MΩ inputs.
  • Integrated oscilloscope and probe measurement systems feature intelligent communication that automatically scales and adjusts units on the oscilloscope display.
  • Low power devices
  • Service
  • Manufacturing engineering
  • Test research and development


All specifications are guaranteed unless noted otherwise. All specifications apply to all models unless noted otherwise.

Model overview
 P6139B P5050B
Attenuation 10X 10X
Dynamic range 300 V CAT II 300 V CAT II
Bandwidth 500 MHz 500 MHz
Input impedance at the probe tip 10 MΩ, 8 pF 10 MΩ, 11 pF
Compensation range 8 pF to 18 pF 16 pF to 22 pF
Cable length 1.3 m 1.3 m

Ordering information

500 MHz general purpose passive probe with TekProbe I interface
500 MHz general purpose passive probe with TekProbe I interface
Standard accessories

Description Quantity included Reorder part number
Long ground spring 016-2028-xx
6" alligator ground lead 196-3521-xx
Standard hook tip 013-0362-xx
Universal IC cap, 3.8 mm 013-0366-xx
Marker band set, 2 each of 5 colors 016-0633-xx
Adjustment tool 003-1433-xx
Manual (English only) 071-2710-xx
Recommended accessories

Description Quantity included Reorder part number
Short ground spring 016-2034-xx
12” alligator ground lead 196-3512-xx
6” clip-on ground lead 196-3198-xx
Micro hook tip 013-0363-xx
MicroCKT test tip 206-0569-xx
BNC to probe tip adapter; unterminated 013-0367-xx
PCB to probe tip adapter 10  016-2016-xx
Compact probe tip chassis mount test jack 131-8831-xx
P6139B replacement tip 206-0635-xx
P5050B replacement tip 206-0636-xx