300CNQ Datasheet, PDF (4/6 Pages) International Rectifier – SCHOTTKY RECTIFIER

300CNQ... Series
Bulletin PD-20481 10/01
160
150
140
130
DC
120
110
100 _{Square wave (D = 0.50)}
90 ^{80% Rated Vr applied}
80
70 ^{see note (2)}
60
0 50 100 150 200 250
Average Forward Current - I _F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
140
120
100
RMS Limit
80
60
40
20
DC
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
0
0 50 100 150 200 250
Average Forward Current - I _F(AV) (A)
Fig. 6 - Forward Power Loss
Characteristics
100000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
10000
1000
10
100
1000
10000
Square Wave Pulse Duration - t _p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
(2) Formula used: T_C = T_J - (Pd + Pd_REV) x R_thJC ;
Pd = Forward Power Loss = I_F(AV) x V_FM @ (I_F(AV) / D) (see Fig. 6);
Pd_REV = Inverse Power Loss = V_R1 x I_R (1 - D); I_R @ V_R1 = 80% rated V_R
4
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