400DMQ035 Datasheet, PDF (4/5 Pages) International Rectifier – SCHOTTKY RECTIFIER

400DMQ... Series
Bulletin PD-20736 rev. B 10/02
180
150
120
DC
90
60 ^{Square wave (D = 0.50)}
80% Rated VRapplied
30
see note (2)
0
0
200
400
600
Average Forward Current - I _F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
100000
500
400
D = 0.20
D = 0.25
D = 0.33
D = 0.50
300 _{D = 0.75}
200
100
RMS Limit
DC
0
0 100 200 300 400 500 600
Average Forward Current - I _F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics
At Any Rated Load Condition
And With Rated VRRM Applied
Following Surge
10000
DUT
CURRENT
MONITOR
1000
10
100
1000
10000
SquareWavePulseDuration-t _p(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current
L
IRFP460
Rg = 25 ohm
HIGH-SPEED
SWITCH
FREE-WHEEL
DIODE
40HFL40S02
+ ^{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 = 80% rated V_R
4
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