PHP33NQ20T Datasheet, PDF (4/13 Pages) NXP Semiconductors – N-channel TrenchMOS™ standard level FET

Philips Semiconductors
PHP/PHB33NQ20T
N-channel TrenchMOS™ standard level FET
5. Thermal characteristics
Table 4: Thermal characteristics
Symbol Parameter
Conditions
R_th(j-mb)
R_th(j-a)
thermal resistance from junction to mounting base Figure 4
thermal resistance from junction to ambient
SOT78
vertical in free air
SOT404
mounted on a printed-circuit
board; minimum footprint;
vertical in still air
5.1 Transient thermal impedance
Min Typ Max Unit
-
-
0.65 K/W
-
60 -
K/W
-
50 -
K/W
10
Z_th(j-mb)
(K/W)
1
δ = 0.5
10^-1
0.2
0.1
0.05
0.02
10^-2
single pulse
03ao09
P
δ = ^tp
T
10^-3
10^-5
10^-4
10^-3
10^-2
t_p
t
T
10^-1
1
t_p (s)
Fig 4. Transient thermal impedance from junction to mounting base as a function of pulse duration.
9397 750 14003
Product data sheet
Rev. 01 — 8 November 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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