The document is a device modeling report for a bipolar junction transistor (2SA2004) from Panasonic, detailing its PSPICE model and various electrical characteristics. It includes parameters like saturation current, forward and reverse beta, and forward transit time, along with results from circuit simulations and comparisons between measurements and simulations. All content is copyrighted by Bee Technologies Inc. in 2006.

1. Device Modeling Report
COMPONENTS : BIPOLAR JUNCTION TRANSISTOR
PART NUMBER : 2SA2004
MANUFACTURER : PANASONIC
Bee Technologies Inc.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

2. Pspice model
Model description
parameter
IS Saturation Current
BF Ideal Maximum Forward Beta
NF Forward Current Emission Coefficient
VAF Forward Early Voltage
IKF Forward Beta Roll-off Knee Current
ISE Non-ideal Base-Emitter Diode Saturation Current
NE Non-ideal Base-Emitter Diode Emission Coefficient
BR Ideal Maximum Reverse Beta
NR Reverse Emission Coefficient
VAR Reverse Early Voltage
IKR Reverse Beta Roll-off Knee Current
ISC Non-ideal Base-Collector Diode Saturation Current
NC Non-ideal Base-Collector Diode Emission Coefficient
NK Forward Beta Roll-off Slope Exponent
RE Emitter Resistance
RB Base Resistance
RC Series Collector Resistance
CJE Zero-bias Emitter-Base Junction Capacitance
VJE Emitter-Base Junction Potential
MJE Emitter-Base Junction Grading Coefficient
CJC Zero-bias Collector-Base Junction Capacitance
VJC Collector-base Junction Potential
MJC Collector-base Junction Grading Coefficient
FC Coefficient for Onset of Forward-bias Depletion
Capacitance
TF Forward Transit Time
XTF Coefficient for TF Dependency on Vce
VTF Voltage for TF Dependency on Vce
ITF Current for TF Dependency on Ic
PTF Excess Phase at f=1/2pi*TF
TR Reverse Transit Time
EG Activation Energy
XTB Forward Beta Temperature Coefficient
XTI Temperature Coefficient for IS
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

3. Reverse Characteristic
Reverse Early Voltage Characteristic
Ic (X2,Y2)
Y=aX+b (X1,Y1)
Vce
VAR
VAF
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4. Reverse DC Beta Characteristic (Ie vs. hFE)
Measurement
Simulation
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

5. Forward Characteristic
Forward Early Voltage Characteristic
Ic (X2,Y2)
Y=aX+b (X1,Y1)
Vce
VAF
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

6. C-B Capacitance Characteristic
Measurement
Simulation
E-B Capacitance Characteristic
Measurement
Simulation
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

7. BJT Ic-hFE Characteristics
Circuit simulation result
1.0K
Simulation
100
10
1.0
-1.0mA -10A
IC(Q1)/ IB(Q1)
IC(Q1)
Evaluation circuit
Q1
Q2SA2004
-1 V1
I1
-0.5
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

8. Comparison graph
Comparison Table
hFE
IC(A) %Error
Measurement Simulation
0.001 139.2 133.515 -4.084
0.002 141.56 135.926 -3.980
0.005 143.44 137.969 -3.814
0.01 143.88 139.058 -3.351
0.02 145.12 139.789 -3.674
0.05 145.42 140.199 -3.590
0.1 144.42 139.963 -3.086
0.2 144.06 138.957 -3.542
0.5 139.42 135.319 -2.941
1 133.44 128.923 -3.385
2 120.3 115.79 -3.749
8 18.294 19.179 4.838
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

9. BJT Vce(sat) voltage& Vbe(sat) voltage Characteristics
Circuit simulation result
-1.0V
Vbe(sat)
-0.5V Vce(sat)
0V
0s 0.5ms 1.0ms
VC(Q1) VB(Q1)
Time
Evaluation circuit
I2
-5
Q1
Q2SA2004
I1
-0.25
0
Comparison Table
IC=-5A,IB=-0.25A Measurement Simulation %Error
VCE (sat) (V) -1.2 (max) -0.275 0
VBE (sat) (V) -1.7 (max) -0.952 0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

10. Switching Time
Circuit simulation result
-5.0A -500mA
1 2
IB
-2.5A
0A
IC
0A
>>
500mA
18us 20us 22us 24us
1 IC(Q1) 2 IB(Q1)
Time
Evaluation circuit
L2 R3
50n 12.445
D1 R1 L1
Q1
50n Q2SA2004
DTR 11.05
D2 R2 V1
-50
22.15
V2 DTR
V1 = -4
V2 = 10
TD = 1u
TR = 50n
TF = 50n
PW = 20u
PER = 50u
0
Comparison Table
IC=-4A,-IB1= IB2= 400 mA Measurement Simulation %Error
tstg (us) 0.1 0.101457 1.457
tf (us) 0.5 0.505049 1.010
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

11. BJT Output Characteristic
Circuit simulation result
-1.0A
-0.9A
-0.8A
-0.7A
-0.6A
-0.5A
-0.4A
-0.3A
-0.2A
-0.1A
0A
0V -0.1V -0.3V -0.5V -0.7V -0.9V
IC(Q1)
V_V1
Evaluation circuit
Q1 V1
Q2SA2004 -10
I1
-5m
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006

12. Reference
All Rights Reserved Copyright (C) Bee Technologies Inc. 2006