www.vishay.com For technical questions within your region, please contact one of the following: Document Number: 93581
8 DiodesAmericas@vishay.com
, DiodesAsia@vishay.com, DiodesEurope@vishay.com Revision: 02-Jul-10
VSK.250, VSK.270, VSK.320 Series
Vishay Semiconductors
Standard Recovery Diodes, 250 A to 320 A
(MAGN-A-PAK Power Modules)
Fig. 19 - Maximum Non-Repetitive Surge Current
Fig. 20 - Maximum Non-Repetitive Surge Current
Fig. 21 - Forward Voltage Drop Characteristics
Fig. 22 - Thermal Impedance Z
thJC
Characteristics
Fig. 23 - Current Ratings Characteristics
Fig. 24 - Current Ratings Characteristics
2000
3000
4000
5000
6000
7000
8000
110100
Pea k Ha lf Sine Wave Forward Current (A)
Number Of Equal Amplitude Half Cycle Current Pulses (N)
Initial T = 150°C
@ 60 Hz 0.0083 s
@ 50 Hz 0.0100 s
At Any Rated Load Condition And With
Rated V Applied Following Surge.
RRM
J
VSK.270.. Se rie s
Pe r Ju n c t io n
2000
3000
4000
5000
6000
7000
8000
9000
0.01 0.1 1
Pe a k Ha lf Sine Wave Forward Current (A)
Pu lse Tra i n D u ra t io n ( s)
Ma ximum Non Repetitive Surge Current
VSK.270.. Series
Pe r Ju n c t io n
Initia l T = 150°C
No Volta ge Rea p p lied
Ra t e d V Re a p p l ie d
Versus Pulse Train Duration.
RRM
J
10
100
1000
10000
0.511.522.533.54
T = 2 5 ° C
J
Instantaneous Forward Current (A)
Instantaneous Forward Voltage (V)
T = 150°C
J
VSK.270.. Se ries
Pe r Ju n c t io n
0.001
0.01
0.1
1
0.001 0.01 0.1 1 10 100
Sq ua re Wave Pulse Dura tio n (s)
thJC
Steady State Value:
R = 0.45 K/ W
(DC Operation)
thJC
VSK.270.. Serie s
Pe r Ju n c t io n
Transient Thermal Impeda nce Z (K/ W)
80
90
100
110
120
130
140
150
0 50 100 150 200 250 300 350
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Angle
Average Forward Current (A)
VSK.320.. Se rie s
R ( D C ) = 0 . 12 5 K/ W
thJC
80
90
100
110
120
130
140
150
0 100 200 300 400 500 600
DC
30°
60°
90°
120°
180°
Maximum Allowable Case Temperature (°C)
Conduction Period
Averag e Forw a rd Current (A)
VSK.320.. Se ries
R ( DC ) = 0 . 12 5 K/ W
thJC