203DMQ080 Datasheet, PDF (4/5 Pages) International Rectifier – Schottky Rectifier

203DMQ... Series
Bulletin PD-20579 04/00
180
160
140
DC
120
80% Square Wave
(D = 0.50)
100
see note (2)
80
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)
100000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
250
D = 0.75
D = 0.50
200 ^{D = 0.33}
D = 0.25
D = 0.20
150
RMS Limit
DC
100
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
D UT
C URRENT
M O N ITO R
1000
10
100
1000
10000
Square Wave Pulse Duration - t_p (microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
L
IRFP4 60
Rg = 25 ohm
H IG H -SP E ED
SW ITC H
FR EE-W HEEL
D IO D E
40 HFL4 0 S02
+ ^{V d = 2 5 V olt}
Fig. 8 - Unclamped Inductive Test Circuit
(2) Formula used: T = T - (Pd + Pd ) x R ;
CJ
REV
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