Absolute Maximum Ratings
Parameter
PD @TA = 25°C
PD @TA = 70°C
PD @TC = 25°C
TP
TJ
TSTG
Power Dissipation
Power Dissipation
Power Dissipation
Peak Soldering Temperature
Operating Junction and
Storage Temperature Range
Thermal Resistance
Parameter
RθJA
RθJA
RθJA
RθJC
RθJ-PCB
Junction-to-Ambient
Junction-to-Ambient
Junction-to-Ambient
Junction-to-Case
Junction-to-PCB Mounted
Linear Derating Factor
IRF6611
Max.
2.8
1.8
89
270
-40 to + 150
Units
W
°C
Typ.
–––
12.5
20
–––
1.0
0.022
Max.
45
–––
–––
1.4
–––
Units
°C/W
W/°C
100
D = 0.50
10
0.20
0.10
0.05
1
0.02
0.01
0.1
0.01
0.001
1E-006
SINGLE PULSE
( THERMAL RESPONSE )
1E-005
0.0001
0.001
τJ τJ
τ1 τ1
R1R1
Ci= τi/Ri
Ci τi/Ri
R2R2
τ2 τ2
R3R3 Ri (°C/W) τi (sec)
τCτ 2.575 0.000686
τ3 τ3
22.547 0.786140
19.884 28
Notes:
1. Duty Factor D = t1/t2
2. Peak Tj = P dm x Zthja + Tc
0.01
0.1
1
10
100
t1 , Rectangular Pulse Duration (sec)
Fig 3. Maximum Effective Transient Thermal Impedance, Junction-to-Ambient
Notes:
Surface mounted on 1 in. square Cu board, steady state.
Used double sided cooling , mounting pad.
Mounted on minimum footprint full size board with metalized
back and with small clip heatsink.
TC measured with thermocouple incontact with top (Drain) of part.
Rθ is measured at TJ of approximately 90°C.
Surface mounted on 1 in. square Cu
board (still air).
www.irf.com
Mounted to a PCB with a
thin gap filler and heat sink.
(still air)
Mounted on minimum
footprint full size board with
metalized back and with small
clip heatsink (still air)
3