Keysight Technologies B1505A User manual
Keysight Technologies B1505A
Power Device Analyzer/Curve Tracer
Step by Step Measurement
Handbook for Power BJT
3
Agilent B1505A Power evice Analyzer/Curve Tracer is a powerful tool for measur-
ing and characterizing power devices.
This power bipolar junction transistor (BJT) measurement handbook covers how to
measure the typical power BJT parameters found in power BJT specifications or
data sheet as shown in table 1. Each test is covered with step by step instructions of
cable connection to the power BJT and the parameter setting of the test, and you
can easily setup the test and execute it by just following the guide.
The step by step measurement handbook covers;
●
A cable connection from the instrument to the device terminal,
●
A test setup of the measurement parameters and the data extraction scheme,
●
A test execution and analysis on EasyEXPERT software which is resident in
B1505A and provides all the control of the B1505A.
A customized Application Test Library is created for testing the specifications intro-
duced in this measurement handbook. They can be downloaded from the Agilent
web site and you can use them by importing to your B1505A. They include the Appli-
cation Test library and the test definitions, and you can start measurements right
away.
Measuring power devices sometimes requires special knowledge of both the device
and the measuring instruments.
For example, the high voltage breakdown test sometimes requires a series resistor
connected between the High voltage SMU (HVSMU) and the collector of power BJT
to measure the breakdown characteristics or to protect from a damage of the device
from an unusual device breakdown.
The connection between SMU and the power BJT requires a different technique
than the power MOSFET because the base current of the power BJT is relatively
higher, and the voltage drop by the connection cable and the contact cannot be ig-
nored.
You can perform accurate measurement by following the steps of setup and the
measurement instructions of this measurement handbook.
Introduction
4
Typical power BJT Parameter Symbol Unit Measurement*
1
Typical Measurable Range of B1 0 A
Collector Current Ic A Ic-Vce -40 A to 40 A
(Minimum 10 fA resolution) *
2
C Current gain h
FE
Ic-Ib 1 ~ 10000 *
3
Collector Emitter Sustaining Voltage V
CE(SUS)
Collector Emitter Breakdown Voltage V
(BR)CEO
Collector-Emitter Cut-off Current I
CEO
A Ic-Vceo -8 mA to 8 mA
(Minimum 10 fA resolution) *
4
Collector-Base Voltage V
CBO
V Ic-Vcbo -3,000 V to 3,000 V
(Minimum 200 µV resolution) *
5
Collector-Base Cut-off Current I
CBO
A Ic-Vcbo -8 mA to 8 mA
(Minimum 10 fA resolution) *
4
Emitter-Base Voltage V
EBO
V Ie-Vebo -20 V to 20 V
(Minimum 2 µV resolution) *
6
Emitter Cut-off Current I
EBO
A Ie-Vebo -1 A to 1 A
(Minimum 10 fA resolution) *
7
Collector-Emitter Saturation Voltage V
CE(sat)
V Vce(sat)-Ic -20 V to 20 V
(Minimum 2 µV resolution) *
6
Base-Emitter Saturation Voltage V
BE(sat)
V Vce(sat)-Ic -20 V to 20 V
(Minimum 2 µV resolution) *
6
Base Emitter ON Voltage V
BE(on)
V Ic-Vbe -20 V to 20 V
(Minimum 2 µV resolution) *
6
Collector-Emitter Voltage (Base-Emitter
short) V
CES
V Ic-Vces -3,000 V to 3,000 V
(Minimum 200 µV resolution) *
5
Output Capacitance Cob pF C-V Better than 1% at C<10 nF *
8
V Ic-Vceo -3,000 V to 3,000 V
(Minimum 200 µV resolution) *
4
Note: *1: Measurement used for extracting the parameter.
*2: With two HCSMUs and requires ual HCSMU Combination Adapter.
*3: Rule of thumb (Example (Ic/Ib): 20 A/20 A ~ 1 A/100 µA)
*4: HVSMU. Maximum 4 mA at 3 kV, 8 mA at 1,500 V.
*5: HVSMU
*6: HPSMU and HCSMU. 2 µV resolution at 2 V range.
*7: HPSMU at 20 V range
*8: Max. 3,000 V C bias with High-voltage Bias T adapter.
Table 1. Typical DC and Capacitance parameters of power BJT and the compatibility of the B1 0 A.
5
Chapter 1. Basic Knowledge of the B1 0 A
1-1. Agilent B1 0 A Power Device Analyzer/Curve Tracer
1-2. Agilent N12 9A Power Device Fixture
1-3. EasyEXPERT Software
● Application Test
● Classic Test
● Tracer Test
Chapter 2. Preparation for the Measurements
2-1. Before using the B1 0 A
2-2. Instruments and Accessories used in the measurement examples
2-3. Devices used in the measurement examples
2-4. Cable Connection between the B1 0 A and the N12 9A Test Fixture
2- . Starting the B1 0 A
Chapter 3. Measurements of Data Sheet Specifications of Power BJTs
3-1. Application Test Example
3-1-1. Ic - Vce measurement
3-1-2. hFE and Vbe(on) versus Ic measurement
3-1-3. Vce(sat) and Vbe(sat) versus Ic measurement
3-1-4. Vce(sus) or V(BR)ceo, and Iceo-Vce measurement
A. Without 100 kΩ collector series resistor
B. With 100 kΩ collector series resistor
3-1-5. BVcbo and Icbo-Vcb measurement
3-1-6. BVebo and Iebo-Veb measurement
3-1-7. BVces and Ic-Vces measurement
3-1-8. Cob-Vc measurement
3-2. Classic Test and Tracer Test Example
3-2-1. Ic-Vce Tracer Test
3-2-2. Vce(sat) and Vbe(sat) versus Ic Classic Test
3-2-3. 100 kΩ resistor precision measurement for Vce(sus) Application Test
Table of Contents
6
Appendix
Appendix 1. Supplemental Information for Preparation
A1-1. ownload the example file-set from the Agilent web site
A1-2. How to return to Workspace management page
Appendix 2. Preparation for the Measurements using the Module Selector
A2-1. Instruments and Accessories used in the measurement examples
A2-2. Cable Connection between the B1505A and the N1259A Test Fixture
A2-3. Connection inside the N1259A Test Fixture
Appendix 3. Configuration for 40 A output
A3-1. Instruments and Accessories used for 40 A configuration
A3-2. Cable Connection between the B1505A and the N1259A Test Fixture
A3-3. EasyEXPERT configuration before starting a measurement
Appendix 4. Before returning the demo-B1 0 A
A4-1. Saving the measured data
A4-2. eleting the workspace and measured data
7
This chapter provides basic B1505A related informa-
tion that is better to know before you proceed this
material.
Agilent B1505A Power evice Analyzer / Curve
Tracer is designed for measuring present power de-
vices. B1505A uses the EasyEXPERT software, a
specially-designed Microsoft Windows® application
program.
The B1505A can measure wide range of power de-
vices from 10 fA to 40 A and 2 µV to 3,000 V with
3,000 V CV measurement features.
The EasyEXPERT software, which is resident on the
B1505A, provides an intuitive and flexible data man-
agement and analysis environment.
Chapter 1. Basic Knowledge of the B1 0 A
B1505A has 10 module slots, which support the following modules
B1510A High Power SMU (HPSMU) 10 fA~1 A/2 µV~200 V
B1512A High Current SMU (HCSMU) 10 pA~1 A/200 nV~40V ( C) or 10 pA~20
A/200 nV~20 V (Pulse)
B1513A High Voltage SMU (HVSMU) 10 fA~4 mA/200 µV~3000 V or 10 fA~8
mA/200 µV~1500 V
B1520A Multi Frequency CMU (MFCMU) 1 fF~10 nF @ 1 MHz for power BJT pa-
rameters with 0~3000 V C bias by using High Voltage Bias-Tee adapter.
Output and measurement range of each module are visually shown in figure 1-1.
1-1. Agilent B1 0 A Power Device Analyzer/Curve Tracer
8
Output and measurement range of each module are visually shown in figure 1-1.
40V-40V
-20A
-10A
10A
20A
1A
-1A
Pulse
DC
-20V 20V
Voltage
Current
(B) HCSMU Output and Measurement range
200V
100V
-200V -100V
1A
00mA
12 mA
-1A
20V
40V
Current
Voltage
(A) HPSMU Output and Measurement range
(C ) HVSMU Output and Measurement range
3000V
1 00V
-3000V -1 00V
- 4mA
- 8mA
8mA
4mA
1 00V Range
3000V Range
Current
Voltage
Figures 1-1. Output and measurement range.
9
Agilent N1259A Power evice Fixture shown in fig-
ure 1-2 is used for measuring packaged power de-
vices, It can basically covers the B1505A`s maximum
output range; 40 A and 3 kV.
We use N1259A option 020 High Voltage Bias-Tee
and option 022 100 kΩ resistor (optional) shown in
figure 1-3.
The module selector option 300 is handled in the
appendix section.
We do not use options 033 1 kΩ resistor in BJT ap-
plication.
Option 020 High Voltage Bias-Tee is required if you
perform a CV measurement with more than 25 V C
bias, and it expands the C bias range up to 3 kV
with HVSMU. You can perform the CV measurement
without Option 020 if the requirement of maximum
bias voltage is less than 25 V which can be output
from MFCMU-self.
Option 022 100 kΩ resistor is basically used by in-
serting a 100 kΩ resistor in series between the
HVSMU and the collector of the power BJT as
shown in Figure 1-4.
Figures 1-2. Agilent N12 9A Test Fixture
Opt 033
Opt 300
(Output)
Opt 020
Opt 022
Figure 1-3. N12 9A Opt 020, 022, 033 and 300
1 00kΩ
ΩΩ
Ω
R
GNDU
HVSMU
Protective resistor
Figure 1-4. Option 022 Series R inserted between the collector and the collector HVSMU.
1-2. Agilent N12 9A Power Device Fixture
10
Note:
We are not using Option 300 Module Selector which
is convenient for automatically switching the meas-
urement resources between the HVSMU, HCSMU and
HPSMU without manually re-connecting the cables
between the power BJT and each SMU. Figure 1-5
shows a simplified image of Module Selector con-
nected to the collector of the power BJT.
We can simplify the test setup in the example by not
using Option 300 and it becomes more versatile for
many users. If you have option 300 installed in the
N1259A, then you can simply use this option by prop-
erly interpreting the step by step instruction for the
collector connection.
However the instructions for using the module selec-
tor are covered in the appendix section.
Figure 1- . Simplified connection diagram using
N12 9A Option 300 Module Selector
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