MJE18008 Datasheet, PDF (7/10 Pages) Motorola, Inc – POWER TRANSISTOR 8.0 AMPERES 1000 VOLTS 45 and 125 WATTS

TYPICAL THERMAL RESPONSE
MJE18008 MJF18008
1
D = 0.5
0.2
0.1
0.1 0.05
0.02
SINGLE PULSE
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
R_θJC(t) = r(t) R_θJC
R_θJC = 1.0°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) R_θJC(t)
0.01
0.01
0.1
1
10
t, TIME (ms)
100
1000
Figure 20. Typical Thermal Response (Z_θJC(t)) for MJE18008
1
D = 0.5
0.2
0.1 _0.1
0.05
0.02
0.01
0.01
SINGLE PULSE
0.1
1
P(pk)
t1
t2
DUTY CYCLE, D = t1/t2
R_θJC(t) = r(t) R_θJC
R_θJC = 2.78°C/W MAX
D CURVES APPLY FOR POWER
PULSE TRAIN SHOWN
READ TIME AT t1
TJ(pk) – TC = P(pk) R_θJC(t)
10
100
t, TIME (ms)
1000
10000
100000
Figure 21. Typical Thermal Response (Z_θJC(t)) for MJF18008
Motorola Bipolar Power Transistor Device Data
7