SPICE MODEL of VR61B(A) 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:VARISTOR
PART NUMBER:VR61B(A)
MANUFACTURER:SHINDENGEN
Bee Technologies Inc.
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

2. Pspice model
Model description
parameter
IS Saturation Current
N Emission Coefficient
RS Series Resistance
IKF High-injection Knee Current
ISR Recombination Current Saturation Value
TT Transit Time
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

3. Forward Current Characteristic
Circuit simulation result
Simulation
Evaluation Circuit
I1 D1
C1
0Adc
11.835p
0
Simulation result
Ifwd(A) VFwd(V):Simulation VFwd(V):Measurement %Error
0.1m 2.11 2.14 1.421
1m 2.456 2.42 -1.465
10m 2.081 2.08 -0.048
100m 3.185 3.2 0.47
1000m 3.962 3.96 -0.05
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

4. Reverse Recovery Characteristic
Circuit simulation result
Simulation
Simulation
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

5. Evaluation Circuit
R1
50
V1 = -2 V1
V2 = 9.6 D1
TD = 5m C1
TR = 10n
TF = 10n 11.835p
PW = 200u
PER = 10m
0
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005

6. Simulation result
Measurement
TT Simulation(sec) Measurement(sec) %Error
VRBA1 1.803u 1.4759u 1.47u -0.399
VRBA2 2u 1.6841u 1.67u -0.837
VRBA3 2.15u 1.878u 1.84u -2.023
VRBA4 2.35u 2.329u 2.34u 0.472
VRBA5 0.000348 762u 760u -0.262
All Rights Reserved Copyright (c) Bee Technologies Inc. 2005