Tektronix 370B Data Sheet

Features

High-resolution DC
Parametric Measurements
With the 370B (Resolution
Down to 1 pA or 2 µV)

High Voltage and Current
Sourcing With the 371B
(Up to 3,000 V or 400 A)

Built-in Cursor
Measurements – Dot,
Window and Function Line

Kelvin Sense Measurements
Sweep Measurement Mode
Waveform Comparison

and Averaging
Fully Programmable

1.44 MB Floppy Drive Stores
Setup and Bitmap of Curves

Direct Hardcopy with
Third-party Printer

Applications

Parametric Characterization
of Semiconductors

Failure Analysis
Data Sheet Generation
Manufacturing Test
Process Monitoring

and Quality Control
Incoming Inspection
Component Matching

Curve Tracers

370B •371B

370B and 371B Programmable Curve Tracers

Tektronix curve tracers offer power and
versatility to test the DC characteristics of
semiconductor devices.The 370B and 371B
curve tracers combine a simple-to-use front
panel, digital acquisition and display,and
programmability to serve a variety of
application needs.

In the R&D lab,Tektronix curve tracers are
used for characterization of new designs,
extraction of SPICE parameters, failure analysis
and data sheet generation. In manufacturing
test,Tektronix curve tracers are used to verify
device quality and process monitoring.They
are also used for incoming inspection to verify
device performance, perform failure analysis
and match components.

Curve Tracers

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The World Standard
for High-resolution
Curve Tracers

The 370B, the world standard for high-resolution
curve tracers, provides up to 20 A/2,000 V
sourcing capability combined with 1 pA and
50 µV measurement resolution. The 370B
performs DC parametric characterization of
integrated circuits, transistors, thyristors,
diodes, SCRs, MOSFETs, electro-optic compo­nents, solar cells, solid-state relays and other
semiconductor devices. It has pushbutton
source and measurement configuration so it’s
easy to change from one test to the next.

The Industry Leader
in High-power
Curve Tracers

The 371B, the industr y leader in high-power
curve tracers, performs DC parametric charac­terization on a wide variety of power semicon­ductors including thyristors, SCRs, IGBTs and
power MOSFETs. The high-voltage collector
mode permits testing the Off-Characteristics
of a device up to 3,000 volts. The pulsed
high-current collector mode provides output
current pulses greater than 400 amps peak
to test On-Characteristics and permits high­power testing up to 3,000 watts. In the sweep
measurement mode, the 371B automatically
constructs a family of curves while stimulating
the device with low-duty-cycle pulses. With
this capability,power curves can be displayed
without excessive heating of the device.

Interactive
Programmable Control

Interactive control of all 370B and 371B
measurements is accomplished from the full­featured front panel or over the GPIB. Ever y
operating parameter can be controlled using
the GPIB controller. 370B and 371B Series
LabView drivers are available at the
Tektronix.com web site. These drivers have
many of the building blocks to create a custom
measurement solution.

Store and Recall Setups
and Digitized Curves

Up to 80 digitized characteristic curves can be
stored on a diskette or in internal non-volatile
memory and recalled at the touch of a button.
A live curve can then be compared with a pre­viously stored curve to assess temperature drift
or other changes in operating parameters.To
help identify the data, up to 24 characters of text
may be used to label or annotate the curve data.

Operating parameters can be adjusted, stored
and recalled using several storage methods
including the 370B and 371B system memory,
the built-in 1.44 MB floppy drive, or sent
externally via the GPIB controller.

Automated Cursor

The 370B and 371B provide three cursor
measurement modes.The dot cursor provides
direct screen readout of voltage, current, gm
or DC beta at any point. The window cursor
can be positioned between two curves to
measure small signal beta or gm and can also
be used for visual go/no-go tests.The function
line cursor provides screen readout of a slope
or intercept value.

Test Fixturing

A test fixture is a standard accessory that
provides safe device enclosure to ensure
oper ator protection during measurements. The
test fixture accommodates standard adapters
with Kelvin sensing.

Sweep Measurement Mode

In the sweep measurement mode, the cur ve
tracer automatically constructs a family of
curves. The 371B achieves this with low duty­cycle pulses.With this capability,power curves
can be displayed without excessive heating of
the device.

Direct Hardcopy Printouts

Curve output data can be sent directly from
the 370B and 371B to a Citizen iDP-3240
thermal printer. Printing can continue while the
370B and 371B perform the next tasks.

Curve Tracers

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Curve Tracers

370B •371B

370B.

371B.

Characteristics

Step Generator

Accuracy –

Incremental: 1.5%.
Absolute: Less than 1.5% of total output + 3% x STEP

AMPLITUDE setting + 1 mV or 1 nA.
Offset Control Range:Variable from –10 to +10 times

STEP AMPLITUDE.
Resolution: STEP AMPLITUDE setting x 1%.

Current Mode –

Amplitude Range: 50 nA to 200 mA in a 1-2-5
sequence of 21 steps.

Maximum Current: 20x STEP AMPLITUDE setting,
10x STEP AMPLITUDE setting when control is set
to 200 mA.

Maximum Voltage:At least 10 V.
Maximum Opposing Offset Current: 10x STEP

AMPLITUDE.
Maximum Opposing Volts:Less than 15 V.
Ripple Plus Noise: Less than 0.5% x STEP AMPLITUDE

+ 10 nA.

Voltage Mode –

Amplitude Switch Range: 50 mV to 2 V,in a 1-2-5
sequence of 6 steps.

Maximum Voltage:20x STEP AMPLITUDE.
Maximum Current:At least 500 mA at 10 V or less, at

least 200 mA at 15 V,at least 10 mA at 40V.
Short Circuit Current Limiting: 500 mA, +50%, –20%.
Maximum Opposing Offset Current: 10x STEP

AMPLITUDE.
Maximum Opposing Current: Less than 20 mA.
Ripple Plus Noise: Less than 0.5% x STEP AMPLITUDE

+ 10 mV.

Step Rates – 2x line frequency (1 x line frequency in
AC collector supply mode). Steps occur at 0 collector
voltage.

Pulsed Steps – 80 µs or 300 µs wide, ±10%.
Steps and Offset Polarity – Corresponds to Collector

Supply Polarity when STEP GENERATOR POLARITY
INVERT is disabled.Opposite to Collector Supply
Polarity when STEP GENERATOR POLARITY INVERT is
selected or CONFIGURATION switch is set to BASE
COMMON. BASE COMMON configuration disables
STEP GENERATOR POLARITY INVERT.

Number of Steps – Ranges from 0 to 10.

AUX Supply

Range – From –40 to +40 volts,with 20 mV step
resolution.

Accuracy (typical):Within 50 mV + 1.5% of
total output.

Output Current:
At least 100 nA at ± 20 V.
At least 10 mA at ± 40 V.

Ripple Plus Noise: Less than 50 mV

p-p

.

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Curve Tracers

370B •371B

370B Curve Tracer Characteristics

Collector Supply

Polarity Modes AC, ± DC, ± Leakage, ± Rectified Sine
Pulse Voltage (Range) 16 V 80 V 400 V 2,000 V
Available Current

Peak Current 10 A 2 A 0.4 A 0.05 A
Peak Current (PULSE mode) 20 A 4 A 0.8 A 0.1A

Available Resistance

Minimum Series Resistance 0.26 Ωs 6.4 Ωs 160 Ωs20kΩs
Maximum Series Resistance 800 Ωs20kΩs 500 kΩs 12.5 MΩs

Available Peak Power

16, 80 and 400 V Range 0.08, 0.4, 2, 10, 50, 220 W
2,000 V Range 0.08, 0.4, 2, 10, 50 W
Variable Collector Supply Settings As 0 to 100% in 0.1% increments

a % of Maximum Peak Voltage
Looping Compensation (typical) Range at least 100 pF

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Curve Tracers

370B •371B

Non-store Vertical Deflection System

Collector/Base Current

Range 1 µA/div to 2 A/div in a 1-2-5 sequence.

X10 MAG extends maximum sensitivity to 100 nA/div (1 nA resolution)

Accuracy (typical) Within 2% of WINDOW cursor readout + 0.1 x VERT/DIV setting

Emitter Current

Range 1 nA/div to 2 mA/div in a 1-2-5 sequence X10 MAG extends maximum sensitivity to 100 pA/div
Accuracy (typical) Within 2% of WINDOW cursor readout + 0.1 x VERT/DIV settings + 1 nA
Maximum Displayed Noise or Ripple Depending on setting of MAX PEAK VOLTS

Max.Volts Range 16 V 80 V 400 V 2000 V
Noise or Ripple 1 nA

p-p

1nA

p-p

2nA

p-p

5nA

p-p

Step Generator Display

Range 1 step/division

1 step/10 divisions with X10 MAG

10 steps/division with STEP MULTI .1x

Accuracy Within 0.3 division

Display Offset (typical)

Range ± 10 divisions with 0.1 div resolution
Accuracy Within 1.5% of offset + 0.1 x VERT/DIV setting

Display X10 MAG (typical)

Accuracy Within 1.5% of window cursor readout + 0.3 x VERT/DIV setting

Display Invert (typical)

Accuracy Within 0.1 x VERT/DIV setting

Digital Storage
Vertical Acquisition

A/D Converter –

Resolution: 10-Bits for 10.24 divisions,
100 counts per division.

Max. Data Points:1024.
Max. Sampling Rate: Line frequency x 1024.
Min. Sampling Rate: Line frequency x 2.

Collector/Base Current –

Range: 1 µA/div to 2 A/div in a 1-2-5 sequence.
X10 MAG extends maximum sensitivity to 100 nA/div
(1 nA resolution).

Accuracy:Within 1.5% of DOT cursor readout
+0.05 x VERT/DIV setting.

Emitter Current –

Range: 1 nA/div to 2 mA/div in a 1-2-5 sequence.
X10 MAG extends max sensitivity to 100 pA/div
(1 pA resolution).

Accuracy:Within 1.5% of DOT cursor readout
+0.05 x VERT/DIV setting + 1nA.

Step Generator Display –

Range: 1 step/division, 1 step/10 divisions with
X10 MAG, 10 steps/division with STEP MULTI .1x.

Accuracy:Within 0.3 division.

Display Offset (typical) –

Range: ±10 divisions with 0.1 div resolution.
Accuracy:Within 1.5% of offset + 0.06 x

VERT/DIV setting.

Display X10 MAG (typical) –

Accuracy:Within 1.5% of window cursor readout
+ 0.3 x VERT/DIV setting.

Display Invert (typical) –

Accuracy:Within 0.04 x VERT/DIV setting.

Non-store Horizontal
Deflection System

Collector Volts –

Range: 50 nV/div to 500 V/div in a 1-2-5 sequence.
X10 MAG extends maximum sensitivity to 5 mV/div
(50 µV resolution).

Accuracy (typical):Within 2% of WINDOW cursor
readout + 0.1 x HORIZ/DIV setting.

Base/Emitter Volts –

Range: 50 mV to 5 V/div in a 1-2-5 sequence.
X10 MAG extends maximum sensitivity to 5 mV/div
(50 µV resolution).

Accuracy (typical):Within 2% of WINDOW cursor
readout + 0.1 x HORIZ/DIV setting.

Step Generator Display –

Range: 1 step/division, 1 step/division with X10 MAG,
10 steps/division with STEP MULTI .1x.

Accuracy:Within 0.3 division.

Display Offset –

Range: ±10 divisions in 0.1 division steps.
Accuracy:Within 1.5% of offset +0.1 x HORIZ/DIV

setting.

Display X10 MAG –

Accuracy:Within 1.5% of window cursor readout
+ 0.3 x HORIZ/DIV setting.

Display Invert –

Accuracy:Within 0.1 x HORIZ/DIV setting.

Digital Storage
Horizontal Acquisition

A/D Converter –

Resolution: 10 bits for 10.24 divisions, 100 counts
per division.

Max. Data Points:1024.
Max. Sampling Rate: Line frequency x 1024.
Min. Sampling Rate; Line frequency x 2.

Collector Volts –

Range: 50 mV/div to 500 V/div in a 1-2-5 sequence.
X10 MAG extends maximum sensitivity to 5 mV/div
(50 µV resolution).

Accuracy:Within 1.5% of DOT cursor readout +

0.05 x HORZ/DIV setting.

Acquisition Modes

Normal, Envelope, and Average. Envelope is Vertical
or Horizontal.Average is moving average with weight
of 1/16.

Safety

Standards Met – UL3111-1, CAN/CSA C22.2 NO.

1010.1, EN 61010-1 with second amendment.

Curve Tracers

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Curve Tracers

370B •371B

Step Generator

Offset Control Range – Variable 0 to 10 times
STEP/OFFSET AMPLITUDE setting.However, 0 to 5
times when STEP/OFFSET AMPLITUDE is 5V or 2A.

Number of Steps – 0 to 10. However, 0 to 5 when
STEP/OFFSET.

Step Polarity – Positive, Negative.
Step Rate –

Pulse:

3 kW: 1/4 (0.25x) the line frequency,300W:
1/2 (.5X) the line frequency.

Stairstep:

300 W,3 W,300 mW,30 mW: 2x the line frequency.

Current Mode

Amplitude Range –

Normal Step: 1 µA to 2 mA in 1-2-5 sequence.
COLLECTOR SUPPLY HIGH VOLTAGE MODE
(30 W/3 W and 300 mW/30 mW).

Pulsed Step: 1 mA to 2 A in 1-2-5 sequence.
COLLECTOR SUPPLY HIGH CURRENT MODE
(3 kW/300 W).

Maximum Current – 20 x step amplitude, except
10 times STEP/OFFSET AMPLITUDE when control
is set to 2 A per step.

Maximum Voltage – 12 V ±30%.
Accuracy:At least 5V.

Ripple Plus Noise – Within 1% of STEP AMPLITUDE
+ 10 nA.

Voltage Mode

Step Amplitude Range – 200 mV to 5V in 1-2-5
sequence.

Short Circuit Current Limiting – 100 mA
+50%, –20%.

Maximum Voltage – 10 x STEP AMPLITUDE,
with 5 V setting.
20 x STEP AMPLITUDE,except 5V setting.

Ripple Plus Noise – Within 1% of STEP AMPLITUDE
+ 10 mV.

Curve Tracers

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Curve Tracers

370B •371B

371B Curve Tracer Characteristics

Collector Supply

Modes (positive and negative High current: 250 µs pulses with maximum peak of 30 V
polarities for both modes) High voltage:Full rectified sine wave with maximum peak of 3,000 V

Polarity Modes NPN + PNP –

High Voltage Mode High Current (pulsed) Mode

Peak Power Watts (range) 30 mW 300 mW 3 W 30 W 300 W 3 kW

Collector Peak Current 0.4 mA 4 mA 4 mA 40 mA 40 A 400 A

±20% ±20% ±20% ±20%

Maximum PeakVoltage 300 V 300 V 3 kV 3 kV 30 V 30 V

+15% +15% +10% +10% +10% +10%

–0% –0% –0% –0% –5% –5%
Variable Collector Supply Range Continuously variable from 0% to 100% in 0.1% increments
Looping Compensation (high Stray capacitance between collector terminal and ground is compensated for up to a maximum of 100 pF

voltage mode)
Pulsed Collector Supply 3 kW: 1/4 (0.25 x) line frequency

Repetition Rate 300 W:1/2 (0.5 x) line frequency
Pulse Width (half amplitude) 250 µs ±10% (More than 30% of collector supply)
Circuit Breakers Both the high-voltage and the high-current supplies have breakers which operate independently.

The high-current output breaker opens automatically in an over-current condition.

Both breakers can be operated manually

Vertical Deflection System

Collector Current (lc) Range –

3 kW Peak Power: 1 A/DIV to 50 A/DIV.
300 W Peak Power: 500 mA/DIV to 5 A/DIV.
30 W Peak Power: 100 µA/DIV to 5 mA/DIV.
3 W Peak Power: 10 µA/DIV to 500 µA/DIV.

0.3 W Peak Power: 10 µA/DIV to 500 µA/DIV.

0.03 W Peak Power: 1 µA/DIV to 50 µA/DIV.

Collector Current (lc) Accuracy– Within 0.1 DIV
to the Vertical graticule lines.

Collector Current (lc) Cursor Accuracy– Within

1.5% of readout +0.1 DIV of the CURRENT/DIV
setting.

Horizontal Deflection System

Collector Supply Volts(Vce) Range –

3 kW,300 W Peak Power: 100 mV/DIV to 5 V/DIV in
a 1-2-5 sequence.

30 W,3 W Peak Power: 50 V/DIV to 500 V/DIV in a
1-2-5 sequence.

300 mW,30 mW Peak Power: 5 V/DIV to 50 V/DIV in
a 1-2-5 sequence.

Step Generator Volts(Vbe) Range – 100 mV/DIV
to 5 V/DIV in a 1-2-5 sequence.

Step Generator Volts (Vbe) Accuracy – Within

0.1 DIV of Horizontal graticules.

Digital Storage Acquisition

A/D Converter –

Resolution: 10 bits for 1024 division, 100 points
per one division.

Tolerance:Within ±2 counts.
Max. Data Point:1024.
Max. Sample Rate: 1024 x line frequency.
Min. Sample Rate: 1/8 x line frequency.

Safety

Standards Met – UL3111-1, CAN/CSA C22.2 NO.

1010.1, EN 61010-1 with second amendment.

Ordering Information

370B Standard Accessories

A1001 – Blank adapter for mounting custom sockets.
A1002 – In-line transistor adapter.
A1005 – Axial diode lead adapter.
User Manual – Order 070-A838-00 (English).
Protective Cover – Order 337-3344-02.
Power Cord – Order 161-0066-00.
Fuses –

Order 159-0260-00 (125 V,4 A).
Order 159-0259-00 ( 250 V,2 A).
Utility Software – Order 063-3341-02.

370B Recommended
Accessories

A1003 – TO-3/TO-66 adapter for power transistors.
Service Manual – Order 071-A842-00.
K4000 – Instrument cart.
Rackmount Kit – Order 016-0930-00 (Opt. 1R).

371B Standard Accessories

A1002 – In-line transistor adapter.
A1003 – T03/T066 adapter for power transistors.
Test Fixture – Order 016-A328-00.
User Manual – Order 070-A840-00 (English).
Power Cord – Order 161-0066-00.
Wire Set – Order 012-1371-00.
Fuses –

Order 159-0291-00 (250 V,1 A).
Order 159-0238-00 (250 V,4 A).
Utility Software – Order 063-3341-02.

371B Recommended
Accessories

A1001 – Blank adapter for mounting custom sockets.
A1005 – Axial lead adapter.
Service Manual – Order 070-A843-00.
K4000 – Instrument cart.
Rackmount Kit – Order 016-0930-00 (Opt. 1R).

Power Cord Options
(370B and 371B)

Opt. A1 – Universal Euro, 220 V, 50 Hz.
Opt. A2 – UK 240 V,50 Hz.
Opt. A3 – Australian, 240 V,50 Hz.
Opt. A5 – Switzerland, 220 V,50 Hz.
Opt. AC – China, 240 V.
Opt. A9 – No power cord, set to 220/240 V.

Service Options

Opt. D1 – Calibration data report.
Opt. C3 – Additional two years of Calibration Service.
Opt. D3 – Calibration data report for Option C3.
Opt. R3 – Additional two years of repair warranty.
Opt. C5 – Additional four years of Calibration Service.
Opt. D5 – Calibration data report for Option C5.
Opt. R5 – Additional four years of repair warranty.

Curve Tracers

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Curve Tracers

370B •371B

Curve Tracers

370B •371B

Our most up-to-date product information is available at:

www.tektronix.com

Copyright © 2002,Tektronix,Inc.All rights reserved. Tektronix products are covered
by U.S. and foreign patents, issued and pending. Information in this publication
supersedes that in all previously published material.Specification and price change
privileges reserved. TEKTRONIX and TEK are registered trademarks of Tektronix,
Inc.All other trade names referenced are the service marks, trademarks or regis­tered trademarks of their respective companies.

09/02 HB/WWW 76W-10757-1B

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Contact Tektronix:

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For other areas contact Tektronix, Inc. at: 1 [phone]

Updated 17 June 2002