5CT1N

Manuals – Specifications – Links – Pictures

The Tektronix 5CT1N is a curve tracer plug-in for the 5000 series oscilloscopes, similar to the 7CT1N for 7000-series scopes. The 5CT1N was designed by Matt Zimmerman.

Key Specifications

DUT drive voltage (C-E)	positive (NPN or N channel) or negative (PNP or P channel) half-waves 7.5 V, 0.5 V/Div, 240 mA peak 30 V, 2 V/Div, 60 mA peak 75 V, 5 V/Div, 24 mA peak 300 V, 20 V/Div, 6 mA peak HV warning light on for > 50 V peak power 500 mW
DUT current display	10 μA/Div to 20 mA/Div, 1−2−5 steps (x 1 mode) 10 nA/Div to 20 μA/Div, 1−2−5 steps (x 1000 mode)
Base/Gate drive	0 to at least 10 steps dual polarity variable offset, at least +/− 5 steps current mode: 1 μA/Step to 1 mA/Step in 1−2−5 sequence voltage mode: 1 mV/Div to 1 V/Div in 1−2−5 sequence, 1 kΩ current limit
DUT connection	Three 4 mm jacks / binding posts
DUT adapters	013-0072-00 Axial diodes 013-0069-00 Devices with long leads 013-0070-01 Transistors in TO-3 or TO-66 cases 013-0074-00 Transistors with stud leads 013-0110-00 Diodes with stud leads 013-0112-00 Transistors in TO-36 cases 013-0128-00 Transistors in TO-5 or TO-18

Links

• Matt Zimmerman, Oscilloscope to Curve Tracer with one Plug-in. Tekscope Vol. 4 No. 6, Nov 1972, p.7
• Dennis Tillman: An Inexpensive Vacuum Tube Curve Tracer Adapter for All Tektronix Semiconductor Curve Tracers

Documents Referencing 5CT1N

Document	Class	Title	Authors	Year	Links
Tekscope 1971 V3 N5 Sep 1971.pdf	Article	New Products		1971	7L12 • 7CT1N • 5103N • 5A13N • 5A14N • 5A22N • 5CT1N • 172 • 1501 • P6056 • P6057 • 603 • 604 • 4602 • S-3160
Tekscope 1972 V4 N6 Nov 1972.pdf	Article	Oscilloscope to Curve Tracer with One Plug-in	Matt Zimmerman	1972	5CT1N • 7CT1N
48W-3346-3.pdf	Brochure	Making the Correct Semiconductor Measurements Time After Time		1982	576 • 172 • 176 • 577 • 178 • 5CT1N • 7CT1N

Documents Referencing Curve tracers

Document	Class	Title	Authors	Year	Links
062-1009-00.pdf	Book	Measurement Concepts: Semiconductor Device Measurements	John Mulvey	1969	Curve tracers • Tunnel diodes
Tekscope 1969 V1 N1 Feb 1969.pdf	Article	Curve Tracing Displays		1969	Curve tracers • 576
Tekscope 1969 V1 N5 Oct 1969.pdf	Article	Troubleshooting the Sweep Ciruits	Charles Phillips	1969	575 • 576 • Curve tracers
Tekscope 1972 V4 N3 May 1972.pdf	Article	Semiautomatic Testing with the Curve Tracer	Jack Millay	1972	576 • 172 • Curve tracers
Tektronix Curve Tracers - Device Testing Techniques.pdf	Book	Tektronix Curve Tracers - Device Testing Techniques		1985	Curve tracers • Tunnel diodes

Pictures

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  5CT1N in 5440 mainframe vertical bay, X output connected to time base X input

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  Displaying transistor curves

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Common Problems

C30 and C32 (100 μF, 25 V) are under-rated and therefore have a tendency to leak or short, causing associated resistors R30 and R32 (240 Ω, 0.25 W, 5%) to overheat and fail. C30 and C32 should be replaced with modern equivalents rated above 35 V.