8ETH06 Datasheet, PDF (4/9 Pages) International Rectifier – Hyperfast Rectifier

8ETH06, 8ETH06S, 8ETH06-1, 8ETH06FP
Bulletin PD-20746 rev. F 02/04
10
D = 0.50
D = 0.20
1 D = 0.10
D = 0.05
D = 0.02
D = 0.01
0.1
Single Pulse
(Thermal Resistance)
P_DM
t1
t2
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
0.01
0.00001 0.0001 0.001
0.01
0.1
1
10
100
t₁, Rectangular Pulse Duration (Seconds)
Fig. 5 - Max. Thermal Impedance Z _thJC Characteristics (FULLPACK)
180
180
Square wave (D = 0.50)
Rated Vr applied
170
160
see note (3)
160
DC
150
140
Square wave (D = 0.50)
Rated Vr applied
130
see note (3)
120
0 2 4 6 8 10 12
Average Forward Current - IF_(AV)(A)
Fig. 6 - Max. Allowable Case Temperature
Vs. Average Forward Current
140
DC
120
100
80
0 2 4 6 8 10 12 14
Average Forward Current - IF_(AV) (A)
Fig. 7 - Max. Allowable Case Temperature
Vs. Average Forward Current (FULLPACK)
20
18
16
14
RMS Limit
12
10
D = 0.01
8
D = 0.02
D = 0.05
6
D = 0.1
4
D = 0.2
D = 0.5
2
DC
0
0 2 4 6 8 10 12
Average Forward Current - IF_(AV) (A)
Fig. 8 - Forward Power Loss Characteristics
(3) 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. 8);
Pd_REV = Inverse Power Loss = V_R1 x I_R (1 - D);
I_R @ V_R1 = rated V_R
4
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