SI4539DY Datasheet, PDF (8/9 Pages) Fairchild Semiconductor – Dual N & P-Channel Enhancement Mode Field Effect Transistor

Typical Thermal Characteristics: N & P-Channel (continued)
1
0.5
0.2
0.1
0.05
0.02
0.01
0.005
D = 0.5
0.2
0.1
0.05
0.02
0.01
Single Pulse
0.002
0.001
0.0001
0.001
0.01
0.1
1
t₁ , TIME (sec)
R _θJA (t) = r(t) * R _θJA
R_θJA =135°C/W
P(pk)
t_{1 t 2}
T_J - T_A = P * R_θJA (t)
Duty Cycle, D = t₁ /t₂
10
100
300
Figure 21. Transient Thermal Response Curve.
Thermal characterization performed using the conditions described in note 1.
Transient thermalresponse will change depending on the circuit board design.
Si4539DY Rev. A