The document is a device modeling report for the 1SR156-400 diode by ROHM, detailing electrical characteristics and simulation results. It includes parameters such as saturation current, reverse breakdown voltage, and transit time, along with comparison graphs of simulation versus measurement results. Copyright information is noted, with all rights reserved by Bee Technologies Inc. since 2004.

1. Device Modeling Report
COMPONENTS:
DIODE/ GENERAL PURPOSE RECTIFIER / STANDARD
PART NUMBER: 1SR156-400
MANUFACTURER: ROHM
REMARK: TC=25C
Bee Technologies Inc.
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

2. PSpice model
Model description
parameter
IS Saturation Current
N Emission Coefficient
RS Series Resistance
IKF High-injection Knee Current
CJO Zero-bias Junction Capacitance
M Junction Grading Coefficient
VJ Junction Potential
ISR Recombination Current Saturation Value
BV Reverse Breakdown Voltage(a positive value)
IBV Reverse Breakdown Current(a positive value)
TT Transit Time
EG Energy-band Gap
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

3. Forward Current Characteristic Reference
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

4. Forward Current Characteristic
Circuit Simulation Result
Evaluation Circuit
R1
0.01m
V1
0Vdc D1
1SR156-400_25C
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

5. Comparison Graph
Circuit Simulation Result
Simulation Result
Vfwd(V) Vfwd(V)
Ifwd(A) %Error
Measurement Simulation
0.01 0.562 0.564 -0.36
0.02 0.620 0.618 0.32
0.05 0.696 0.693 0.43
0.1 0.755 0.753 0.26
0.2 0.820 0.820 0.00
0.5 0.930 0.933 -0.32
1 1.060 1.058 0.19
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

6. Capacitance Characteristic
Circuit Simulation Result
Evaluation Circuit
V2
0Vdc
V2 = 400V V1
V1 = 0 D1
TD = 0
TR = 1us
TF = 10ns
PW = 5us
PER = 10us 1SR156-400_25C
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

7. Comparison Graph
Circuit Simulation Result
Simulation Result
Cj(pF) Cj(pF)
Vrev(V) %Error
Measurement Simulation
0 12.000 12.000 0.00
0.1 11.528 11.747 -1.90
0.2 11.241 11.234 0.06
0.5 10.568 10.672 -0.98
1 9.875 9.957 -0.83
2 8.975 9.078 -1.15
5 7.601 7.846 -3.22
10 6.477 6.361 1.79
20 5.388 5.344 0.82
50 4.129 4.200 -1.72
100 3.394 3.492 -2.89
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

8. Reverse Recovery Characteristic
Circuit Simulation Result
Evaluation Circuit
R1
50
D1
V2 = 10.8V V1
V1 = -9.2V
TD = 0
TR = 10ns
TF = 10ns
PW = 20us
PER = 50us 1SR156-400_25C
0
Compare Measurement vs. Simulation
Measurement Simulation %Error
trr 260.0 ns 262.0 ns 0.76
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

9. Reverse Recovery Characteristic Reference
Measurement
Trj =40(ns)
Trb=220(ns)
Conditions: Ifwd=Irev=0.2(A), Rl=50
Example
Relation between trj and trb
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004