T_371A T 371A

User Manual: T_371A

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The 370A High-Resolution Programmable Curve Tracer (left) and the 371A High-Power Programmable Curve

Tracer (right).

Introduction

Nothing compares to a curve

tracer when power, versatil-

ity, and ease of use are

needed to test the DC charac-

teristics of semiconductor

devices. The Sony/Tektronix

370A and 371A curve tracers

combine a simple-to-use

front panel, digital acquisi-

tion and display, and pro-

grammability to serve many

application needs. The 370-

series digital curve tracers

offer several advantages over

analog curve tracers:

• Higher voltage and current

sourcing capability (up to

3000 V and 400 A)

• Higher resolution voltage

and current measurements

(down to 1 pA and 50 µV)

• View a family of curves

without flicker

• Display a reference curve

to measure variations due

to temperature, etc.

• Voltage, current, DC beta,

and slope measurement

with built-in cursor mea-

surements

• Store curves and setups for

consistent tests and mea-

surements based on refer-

ence curves

• Full-color printouts using

an HPGL plotter instead of

expensive Polaroids

• Automate tests with com-

puter and software (e.g.,

Metrics, LabView, etc.)

Fully Programmable Digital Curve

Tracers with Cursors and Hardcopy

High-resolution DC Parametric Mea-

surements with the 370A

High Voltage and Current Sourcing

with the 371A

Metrics Software and LabView

Drivers Available to Enhance Opera-

tion

CE Certified

370A and 371A Digital

Storage Curve Tracers

370A High-Resolution

Programmable Curve Tracer

The 370A high-resolution

curve tracer performs DC

parametric characterization

of transistors, thyristors,

diodes, SCRs, MOSFETs,

opto-electronic components,

solar cells, solid-state dis-

plays, and other semiconduc-

tor devices. The 370A is a

versatile workhorse in many

labs and production stations

with up to 20 A/2000 V

sourcing capability com-

bined with 1 pA and 50 V

measurement resolution. It

has pushbutton source and

measurement configuration

so it’s easy to change from

one test to the next.

page 2

371A High-Power Programmable

Curve Tracer

The 371A high-power curve

tracer performs DC paramet-

ric characterization on a

wide variety of power semi-

conductors including thyris-

tors, SCRs, IGBTs, and power

MOSFETs. The high-voltage

collector mode permits test-

ing the Off-Characteristics of

a device up to 3000 volts.

The pulsed high-current col-

lector mode provides output

current pulses greater than

400 amps peak for testing

On-Characteristics. It also

permits high-power testing

up to 3,000 watts. In the

sweep measurement mode,

the 371A automatically con-

structs 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

370A/371A measurements is

accomplished from the full

featured front panel or over

the GPIB. Every operating

parameter can be controlled

using a GPIB controller. For

interactive control, Metrics

software provides complete

control and analysis without

having to program the instru-

ment. 370/371-series Lab-

View drivers are available

from the Tektronix BBS.

These drivers have many of

the building blocks for creat-

ing a custom measurement

solution.

Store and Recall Setups and

Digitized Curves

Up to 64 digitized character-

istic curves can be stored on

a diskette 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 meth-

ods including the 370A/371A

non-volatile memory, the

built-in DOS compatible

floppy disk, or to an external

GPIB controller.

Built-in Cursor Measurements

The 370A/371A provides

three cursor-measurement

modes. The Dot cursor pro-

vides direct screen readout of

voltage, current, gm, or DC

beta at any point. The Win-

dow cursor can be positioned

between two curves to mea-

sure small-signal beta or gm,

and can also be used for

visual go/no-go tests. The

Function Line cursor pro-

vides screen readout of a

slope or intercept value.

Test Fixturing

A test fixture which provides

safe device enclosure to

ensure operator protection

during measurements is pro-

vided as a standard acces-

sory. The test fixture accom-

modates standard A1001

through A1005 adapters with

Kelvin sensing, 3-pin

adapters without Kelvin

sensing, and the A1023 and

A1024 surface-mount

adapters.

Direct Hardcopy

Plotter output data can be

sent directly from the

370A/371A without the need

for an external controller.

Plotting can continue while

the 370A/371A performs the

next tasks.

Test and Measurement Software

Metrics ICS Interactive Char-

acterization Software (Tek-

tronix PN 063-1649-00) com-

bined with the 370/371

driver (Tektronix PN

063-1650-00) offers com-

puter-controlled DC parame-

ter characterization and anal-

ysis of numerous semicon-

the data on the computer

screen. Since LabView is a

graphical programming lan-

guage, the drivers can be

modified to suit a particular

measurement requirement.

To download either driver,

set your modem for N,8,1,

19,200 baud and dial

503-627-5658. Once logged

in, select the download

option and type TEK370.ZIP

to download the 370 driver

or TEK371.ZIP to download

the 371 driver.

page 3

Labview ATEdemo incorporates many of the 370/371 control VIs.

Setup, capture, and measurement with Metrics ICS software.

1Define Test

Setup 2Press the Measure

Button to Capture Data 3Plot the Data and Make

Measurements

ductor devices. Every aspect

of instrument control and

data analysis is available

through a set of interactive

dialog boxes that are config-

ured in a graphics-oriented

Microsoft Windows environ-

ment. Metrics ICS can make

measurements that are not

available on a manually

operated instrument, includ-

ing the ability to sweep any

supply. Extensive data man-

agement capabilities include

project files, data export,

DDE links, and search capa-

bilities. Metrics ICS built-in

automation capabilities

include conditional pass/fail

testing and result logging.

Labview™ Driver

370A and 371A drivers for

National Instruments Lab-

View software is available

from the Tektronix Bulletin

Board Service. These drivers

allow setting most controls

in the instrument, saving

data to disk, and displaying

page 4

Collector Supply Polarity Modes – AC, DC, Leakage, Recti-

fied Sine.

Range – 16 V, 80 V, 400 V, 2000 V.

Max Peak Current –10 A, 2 A, 0.4 A, 0.05 A.

Peak Current Pulsed –20 A, 4 A, 0.8 A, 0.1 A .

Minimum Series Resistance – 0.26 Ω,

6.4 Ω, 160 Ω, 20 kΩ.

Maximum Series Resistance – 800 Ω,

20kΩ, 500kΩ, 12.5MΩ.

Peak Power Wattage – 0.08W, 0.4W, 2W,

10W, 50W, 220W.

Step Generator Current Mode –

Amplitude range: 50 nA to 200 mA in 1-2-5

sequence in 21 steps.

Maximum current: 20X STEP AMPLITUDE,

except for 2 A with switch set to 200 mA.

Maximum voltage: At least 10 V.

Maximum opposing offset current: 10X

STEP AMPLITUDE.

Maximum opposing volts: Less than 7 V.

Ripple plus noise: Less than 0.5% X STEP

AMPLITUDE + 1 nA.

Voltage Mode –

Amplitude switch range: 50 mV to 2 V, in

1-2-5 sequence.

Maximum voltage: 20 X STEP AMPLITUDE.

Max current: At least 500 mA at 10 V or

less, or 10 mA at 40 V.

Accuracy (current or voltage steps including

offset) –

Incremental: 2%.

Absolute: Less than 2% X total output +3%

X AMPLITUDE setting.

Offset Control Range – Variable from –10 to

+10 X STEP AMPLITUDE, with 0.1% resolu-

tion.

Short Circuit Current Limiting – 500 mA.

Maximum Opposing Offset

Volts – 10X STEP AMPLITUDE.

Maximum Opposing Current – Less than

20mA.

Step Rates – 2X line frequency (1X line fre-

quency in AC collector supply). Steps occur

at 0 collector voltage.

Pulsed Steps – 80 µs or 300 µs wide ±10%.

Steps and Offset Polarity – Same as collec-

tor supply polarity when STEP GENERATOR

POLARITY INVERT is disabled. Opposite to

collector supply polarity when STEP GENER-

ATOR POLARITY INVERT is selected or CON-

FIGURATION is set to BASE GROUNDED,

STEP GENERATOR POLARITY INVERT is dis-

a b l e d .

Number of Steps – Selectable from 0 to 10.

Auxiliary Supply –

Range: From –40 to +40 V with 20 mV reso-

lution.

Accuracy: Greater than 50 mV +2% of total

output.

Output current: ±20 V, at least 100 mA;

±40V, at least 10 mA.

Nonstore Mode Collector Current Range –

1 A/div to 2A/div in 1-2-5 sequence of 20

steps. X10 MAG extends maximum sensitiv-

ity to 100 nA/div. Both unmagnified and

magnified accuracy are within 3%

Step Generator Display Range – 1 to 10

steps/division, or 1 step/10 divisions.

Unmagnified and magnified accuracy are

within 3%.

Display Offset – Vertical offset of display

centerline value up to 10 divisions in 21

half-division steps.

Digital Storage Vertical Acquisitions

A/D Converter –

Resolution: 10 bits for 10.24 divisions, 100

counts per division. Maximum data points

are 1024.

Maximum sampling rate: Line frequency X

1024.

Minimum sampling rate: Line frequency X 2.

Collector Current Range – 1 A/div to

2A/div in 1-2-5 sequence of 20 steps. X10

MAG extends maximum sensitivity to

100nA/div (1 nA resolution). Unmagnified

accuracy is within 1.5% of readout +0.05

div of setting with DOT cursor.

Emitter Current Range – 1 nA/div to

2mA/div in 1-2-5 sequence of 20 steps.

X10 MAG extends maximum sensitivity to

100 pA/div (1 pA resolution). Unmagnified

accuracy is within 1.5% of readout

+0.05div of setting + 1 nA with DOT

cursor.

Nonstore Horizontal Deflection System

Collector Volts Range – 50 mV/div to

500V/div in 1-2-5 sequence of 13 steps.

X10 MAG extends maximum sensitivity to

5mV/div (50 µV resolution). Unmagnified

and magnified accuracy (NONSTORE) are

within 3%.

Base/Emitter Volts Range – 50 mV/div to

5V/div in 1-2-5 sequence of 6 steps. X10

MAG extends maximum sensitivity to

5mV/div (50 µV resolution). Unmagnified

and magnified accuracy (NONSTORE) are

within 3%.

Step Generator Display Range – 1 or 10

steps/division, or 1 step/10 divisions.

Unmagnified and magnified accuracy (NON-

STORE) are within 3%.

Display Offset – Horizontal offset of display

center-line value up to 10 divisions in 21

half-division steps.

370A

Characteristics

CRT and Readout CRT – 7-inch diagonal (173 mm), electro-

static deflection, P31 phosphor.

Readout – Automatic on-screen display.

Over-range is shown by a flashing display.

100 pA to 2 A per vertical division; 5 mV to

500V per horizontal division; 5 nA to

200mA and 5 mV to 2 V per step.

BETA or Gm –

BETA: 500 nano to 400 Mega.

Gm: 50 ns to 400 s.

Cursor: 4-digit horizontal and vertical val-

ues without X10 MAG: 5-digit with MAG.

Offset: 4-digit value.

Auxiliary supply: –40 V to +40 V.

Digital Storage Horizontal Acquisition

A/D Converter Acquisition –

Resolution: 10 bits for 10.24 divisions, 100

counts per division.

Sampling rate: 2X line frequency.

Collector Volts Range – 50 mV/div to

500V/div in 1-2-5 sequence of 21 steps.

X10 MAG extends maximum sensitivity to

5mV/div (50 µV resolution). Unmagnified

accuracy is within 1.5% of readout

+0.03div of setting with DOT cursor.

Acquisition Modes – Normal, Envelope,

and Average. Envelope is Vertical or Hori-

zontal. Average is moving average with

weight of 1/16.

page 5

page 6

Collector Supply Modes (positive and negative polarities for

both modes) –

High Current: 250 s pulses with maximum

peak of 30 V.

High Voltage: Full rectified sine with maxi-

mum peak of 3000 V (positive and negative

polarities for both modes).

Output –

High-Current (pulsed) Mode:

Peak Peak Maximum

Voltage Current m Power

30 V +10%, –5% 400 A 3 kW

30 V +10%, –5% 40 A 300 W

High-Voltage Mode:

Peak Peak Maximum

Voltage Current m Power

3 kV +10, –0% 40 mA ±20% 30 W

3 kV +10, –0% 4 mA ±20% 3 W

300 V +15%, –0% 4 mA ±20% 300 mW

300 V +15%, –0% 0.4 mA ±20% 30 mW

Polarities –

NPN+: Positive.

NPN–: Negative.

Variable Collector Supply Range – Contin-

uously variable from 0% to 100% in 0.1%

resolution.

Pulsed Collector Supply Pulse Width –

250 µs 10%.

Pulsed Collector Repetition Rate –

3 kW: 0.25 times line frequency.

300 W: 0.5 times line frequency.

Loop Compensation (High Voltage mode) –

Stray capacitance between collector termi-

nal and ground is compensated for up to a

maximum of 100pF.

Circuit Breakers – Both the high-voltage

and the high-current supplies have breakers

which operate independently. The high-cur-

rent output breaker opens automatically in

an over-current condition. Both breakers

can be operated manually.

Vertical Display System Collector Current Measurement

Vertical Range (in 1-2-5 increments) –

3 kW maximum: 1 A/div to 50 A/div.

300 W maximum: 500 µA/div to 5 A/div.

30 W maximum: 100 µA/div to 500 µA/div.

3 W, 300 mW maximum: 10 A/div to

500A/div.

30 mW maximum: 1 µA/div to 50 µA/div.

Accuracy – Within 0.1 vertical division.

Cursor Accuracy (nonstore mode, window

cursor) –Readout X 2% plus 0.2 div of ver-

tical setting.

Horizontal Display System Collector Voltage

Measurement Vertical Range (in 1-2-5 increments) –

3 kW, 300 W maximum: 100 mV/div to

5V/div.

30 W, 3 W maximum: 50 V/div to

500V/div.

300 mW, 30 mW maximum: 5 V/div to

50V/div

Step Generator Voltage Range (VBE) –

100 mV/div to 5 V/div (in increments of

1-2-5).

Accuracy – Within 0.1 horizontal division.

Cursor Accuracy (nonstore mode, window

cursor) –Readout times 2% plus 0.2 div of

the horizontal setting.

Step Generator Current Mode –

High-Current (pulsed) Mode:

Step Range Maximum Maximum

and Waveform Current m Voltage

1 mA/step to Step/offset 10 V

2 mA/step amplitude ±20%

pulsed setting X 20,

maximum

20 A at

2A/step

High-Voltage Mode:

Step Range Maximum Maximum

and Waveform Current m Voltage

1 µA/step to Step/offset 10 V

2 mA/step amplitude ±20%

stairstep setting X 20,

maximum

20 A at

2A/step

Ripple, Noise –Step/offset amplitude set-

ting X 1% plus 10 nA.

Pulse Width (collector supply high-current

mode, 1 mA/step step/offset amplitude set-

ting) –500 s ±10%.

Voltage Mode –

High-Current (pulsed) and High-Voltage

Mode:

Step Range Maximum Maximum

and Waveform Current m Voltage

200 mV/step to 100 mA Step/offset

5 V/step +50%,–20% amplitude

stairstep setting

X 20,

maximum

50 V.

Ripple, Noise –Step/offset amplitude set-

ting X 1% plus 10 mV,

Number of Steps – 0 to 10 except 0 to 5 for

the 5 V/step and 2A/step ranges.

Step Polarity – Same as collector supply

polarity. Reverse with STEP-INVERT but-

ton.

Step Rate –

Pulse: 0.25 X the line frequency at 3kW,

0.5 X the line frequency at 300W.

Stairstep: 2 X the line frequency.

Offset – 0 to 10 X the step/offset amplitude

setting with 1% resolution except 0 to 5 X

at 5V/step and 2A/step settings. Polarity is

same as the step signal.

Test Fixture Test Fixture – Designed to allow easy con-

nection to a variety of devices. Includes an

integral safety enclosure to assure operator

protection. Special patch cords are pro-

vided for connecting large devices.

Metrics Software Recommended Computer Configuration –

Minimum processor: 386DX/33 MHz IBM

compatible computer.

Free memory: 8 Mb minimum.

Disk space: At least 14 Mb.

Floppy drive: 1.44 Mb 3.5-inch.

Operating system: Microsoft Windows 3.

Interface cards: National Instruments GPIB

card.

371A

Characteristics

page 7

370A High Resolution Curve Tracer

Includes: Operations Manual, A1001 Blank

Adapter, A1005 Axial Lead Diode Adapter,

A1009 Four- and Six-lead Dual-width Tran-

sistor FETAdapter, 3.5-inch Floppy Disk,

Power Cord, 125 V/4 A Fuse, 250 V/2 A

Fuse.

370AOptions

Option 1R – Rackmount kit.

Option 95 – Provide test report.

Option 96 – Provide Inspection Passed cer-

tificate.

Option C5 – Five-year calibration Service

Assurance Plan.

Option R2 – Two additional years repair

Service Assurance Plan.

International Power Plug Options

Option A1 – Universal Euro 220 V, 50 Hz.

Option A2 – UK 240 V, 50 Hz.

Option A3 – Australian 240 V, 50 Hz.

Option A4 – North American 240 V, 60 Hz.

Option A5 – Switzerland 220 V, 50 Hz.

371A High Power Curve Tracer

Includes: Operations Manual, Wiring Kit,

A1002 In-line Adapter, A1003 TO-3/TO-66

Adapter, 3.5-inch Floppy Disk, Power Cord,

250 V/1 A Fuse, 250 V/2 A Fuse, 250 V/4 A

Fuse.

371AOptions

Option 1R – Rackmount kit.

Option 95 – Provide test report.

Option 96 – Provide Inspection Passed cer-

tificate.

Option C5 – Five-year calibration Service

Assurance Plan.

Option R2 – Two additional years repair

Service Assurance Plan.

International Power Plug Options

Option A1 – Universal Euro 220 V, 50 Hz.

Option A2 – UK 240 V, 50 Hz.

Option A3 – Australian 240 V, 50 Hz.

Option A4 – North American 240 V, 60 Hz.

Option A5 – Switzerland 220 V, 50 Hz.

370A/371A Optional Accessories

■Metrics Software (core program –

requires 063-1650-00 drivers to operate

37x curve tracers) –063-1649-00.

■370/371 Drivers for Metrics Software –

063-1650-00.

■LabView for Windows – LVWIN.

■K475 Instrument Cart.

■HC100 Plotter for Low-cost, Four-color

Plotting.

■A1001 – Blank adapter.

■A1002 – TO220 Kelvin sense adapter.

■A1003 – T03/TO066 Kelvin sense

adapter.

■A1004 – Offset-lead Kelvin sense

adapter.

■A1005 – Axial diode lead Kelvin sense

adapter.

■A1006 – Long-lead, dual-width transis-

tor adapter.

■A1007 – Bipolar and MOSFET transistor

adapter.

■A1008 – Long-lead, dual-width, FET

adapter.

■A1009 – 4- and 6-lead, dual-width FET

adapter.

■A1010 – 16-pin IC, zero-insertion

adapter.

■A1023 – SOT 23 for surface-mount

devices.

■A1024 – TO252/SMT D-pack surface-

mount devices adapter.

Ordering

Information

12/96 TD/XBS 76W–10757–1

Information in this publication supersedes that in all previously published material. Specification and price change privileges reserved.

TEKTRONIX and TEK are registered trademarks.

For further information, contact Tektronix:

World Wide Web:

http://www.tek.com;

ASEAN Countries

(65) 356-3900;

Australia & New Zealand

61 (2) 888-7066;

Austria

43 (1) 7 0 1 7 7-261;

Belgium

32 (2) 725-96-10;

Brazil and South America

55 (11) 3741 8360;

Canada

1 (800) 661-5625;

Denmark

45 (44) 850700;

Finland

358 (9) 4783 400;

France & North Africa

33 (1) 69 86 81 81;

Germany, Eastern Europe, & Middle East

49 (221) 94 77-0;

Hong Kong

(852) 2585-6688;

India

91 (80) 2275577;

Italy

39 (2) 250861;

Japan (Sony/Tektronix Corporation)

81 (3) 3448-4611;

Mexico, Central America, & Caribbean

52 (5) 666-6333;

The Netherlands

3 12 35 6 95555;

Norway

47 (22)070700;

People’s Republic of China

(86) 10-62351230;

Republic of Korea

82 (2) 528-5299;

Spain & Portugal

34 (1) 372 6000;

Sweden

46 (8) 629 6500;

Switzerland

41 (42) 219192;

T a i w a n

886 (2) 765-6362;

United Kingdom & Eire

44 (1628) 403300;

USA

1( 8 0 0 )4 2 6 - 2 2 0 0

From other areas, contact:

Tektronix, Inc. Export Sales, P.O. Box 500, M/S 50-255, Beaverton, Oregon 97077-0001, USA (503)627-1916

T_371A T 371A

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