DST3946DPJ Diodes, DST3946DPJ Datasheet - Page 3

• Manufacturer Part Number: DST3946DPJ
• Description: COMPLEMENTARY NPN/PNP SURFACE MOUNT TRANSISTOR
• Manufacturer: Diodes

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