203DNQ080 Datasheet, PDF (4/5 Pages) International Rectifier – SCHOTTKY RECTIFIER

203DNQ... Series
Bulletin PD-20580 rev. B 10/02
180
170
160
DC
150
140 _{80% Square Wave}
(D = 0.50)
130
see note (2)
120
0 50 100 150 200 250 300
Average Forward Current - I_F(AV) (A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current (Per Leg)
00000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
50
D = 0.75
D = 0.50
00 ^{D = 0.33}
D = 0.25
D = 0.20
50
RMS Limit
DC
00
50
0
0 50 100 150 200 250 300
Average Forward Current - I_F(AV) (A)
Fig. 6 - Forward Power Loss Characteristics
(Per Leg)
10000
DUT
CURRENT
MONITOR
1000
10
100
1000
10000
Square Wave Pulse Duration - t_p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
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
www.irf.com