20BQ030 Datasheet, PDF (4/6 Pages) International Rectifier – SCHOTTKY RECTIFIER

20BQ030
Bulletin PD-20717 rev. G 07/04
150
140
DC
130
120
110 D = 0.20
100
D = 0.25
D = 0.33
90 D = 0.50
D = 0.75
80
Square wave (D = 0.50)
70 _{80%Rated VR a pplied}
60 _{see note (2)}
50
0 0.5 1 1.5 2 2.5 3
Average Forward Current - I _F(AV) (A)
Fig. 5 - Maximum Average Forward Current
Vs. Allowable Lead Temperature
1000
1.2
D = 0.20
1
D = 0.25
D = 0.33
D = 0.50
0.8 ^{D = 0.75}
RMS Limit
0.6
DC
0.4
0.2
0
0 0.5 1 1.5 2 2.5 3
Average Forward Current - I _F(AV) (A)
Fig. 6 - Maximum Average Forward Dissipation
Vs. Average Forward Current
100
At Any Rated Load Condition
And With
Following
Rated
Surge
V _RRM
Applied
10
10
100
1000
10000
Square Wave Pulse Duration - t _p (microsec )
Fig. 7 - Maximum Peak Surge Forward Current Vs. Pulse Duration
(2) Formula used: T_L = T_J - (Pd + Pd_REV) x R_thJL ;
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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