SPICE MODEL of UF5408 (Professional Model) in SPICE PARK. English Version is http://www.spicepark.net. Japanese Version is http://www.spicepark.com by Bee Technologies.

1. Device Modeling Report
COMPONENTS:
DIODE/GENERAL PURPOSE RECTIFIER/ PORFESSIONAL
PART NUMBER: UF5408
MANUFACTURER: VISHAY
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
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

3. Forward Current Characteristic
Circuit simulation result
10A
1.0A
100mA
10mA
0.1V 2.0V
I(X_U3.D_D1)
V_V1
Evaluation circuit
R1
0.01m
U1
V1
0Vdc UF5408
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

4. Comparison graph
Circuit simulation result
Simulation result
VF (V)
IF (A) Error (%)
Measurement Simulation
0.01 0.550 0.540 1.82
0.02 0.600 0.590 1.67
0.05 0.690 0.689 0.14
0.1 0.765 0.775 -1.31
0.2 0.860 0.850 1.16
0.5 1.000 0.990 1.00
1 1.120 1.100 1.79
2 1.220 1.210 0.82
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

5. Junction Capacitance Characteristic
Circuit simulation result
1.0n
100p
10p
1.0p
100mV 1.0V 10V 100V
-I(X_U1.D_D1)/(1000V/1us)
V(N00016)
Evaluation circuit
V2
0Vdc
V2 = 1000 V1
V1 = 0 U1
TD = 0
TR = 1us UF5408
TF = 10ns
PW = 5us
PER = 10us
0
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

6. Comparison graph
Circuit simulation result
Simulation result
Cj(pF)
Vrev(V) Error (%)
Measurement Simulation
0.1 75.800 82.400 -8.71
0.2 70.700 74.300 -5.09
0.5 60.300 61.100 -1.33
1 51.600 51.100 0.97
2 42.700 42.600 0.23
5 32.500 32.300 0.62
10 26.000 25.600 1.54
20 20.600 20.100 2.43
50 15.000 14.500 3.33
100 11.660 11.400 2.23
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

7. Reverse Recovery Characteristic
Circuit simulation result
200mA
0A
-200mA
19.9us 20.0us 20.2us 20.4us
I(R1)
Time
Evaluation circuit
R1
50
V2 = 10.9V V1
V1 = -9.30V U1
TD = 0
TR = 10ns UF5408
TF = 10ns
PW = 20us
PER = 50us
0
Compare Measurement VS. Simulation
Measurement Simulation %Error
trj 58.00 ns 57.98 ns 0.03
trb 120.00 ns 120.20 ns 0.16
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004

8. Reverse Recovery Characteristic Reference
Measurement
trj=58(ns)
trb=120(ns)
Conditions:Ifwd=Irev=0.2(A),Rl=50
Example
Relation between trj and trb
All Rights Reserved Copyright (C) Bee Technologies Inc. 2004