409CNQ135 Datasheet, PDF (4/5 Pages) International Rectifier – SCHOTTKY RECTIFIER

409CNQ... Series
Bulletin PD-20723 rev. B 07/01
180
160
DC
140
120
100 ^{Square wave (D = 0.50)}
Rated VRapplied
80
see note (2)
60
0 50 100 150 200 250 300
Average Forward Current - I _{F (AV)} (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
100000
200
D = 0.20
D = 0.25
160 D = 0.33
D = 0.50
D = 0.75
120
RMS Limit
DC
80
40
0
0 50 100 150 200 250 300
Average Forward Current - I _{F (AV)} (A)
Fig. 6 - Forward Power Loss Characteristics
10000
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
DUT
C URRE NT
M ONITOR
1000
10
100
1000
10000
Square Wave Pulse Duration - t _p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
L
IR F P 46 0
Rg = 25 ohm
HIG H-SPEED
SW ITC H
FR EE-W HEEL
D IO D E
4 0H FL40 S02
+ ^{Vd = 25 Volt}
Fig. 8 - Unclamped Inductive Test Circuit
(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 = rated V_R
4
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