DST3946DPJ Datasheet, PDF (3/9 Pages) Diodes Incorporated – COMPLEMENTARY NPN/PNP SURFACE MOUNT TRANSISTOR

DST3946DPJ
1
D = 0.7
D = 0.5
D = 0.3
0.1 _{D = 0.1}
D = 0.05
0.01
D = 0.02
D = 0.01
D = 0.005
D = 0.9
1,000
D = Single Pulse
0.001
0.000001 0.00001
0.0001
0.001
0.01
0.1
1
t₁, PULSE DURATION TIME (s)
Fig. 1 Transient Thermal Response
0.4
100
10
Single Pulse
R_θJA(t) = r(t) * R_θJA
0.3
R_θJA = 370°C/W
T_J - T_A = P * R_θJA(t)
Duty Cycle, D = t₁/t₂
0.2
R_θJA(t) = r(t) * R_θJA
R_θJA = 370°C/W
P(pk)
t₁
t₂
T_J - T_A = P * R_θJA(t)
Duty Cycle, D = t₁/t₂
10
100
1,000
Note 3
1
0.1
0.00001 0.001
0.1
10
1,000
t₁, PULSE DURATION TIME (s)
Fig. 2 Single Pulse Maximum Power Dissipation
0.1
0
0 20 40 60 80 100 120 140 160
T_A, AMBIENT TEMPERATURE (°C)
Fig. 3 Power Dissipation vs. Ambient Temperature
DST3946DPJ
Document number: DS32040 Rev. 1 - 2
3 of 9
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January 2010
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