PHP225NQ04T Datasheet, PDF (4/13 Pages) NXP Semiconductors – N-channel TrenchMOS standard level FET

Philips Semiconductors
PHP/PHB225NQ04T
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 still air
SOT404
mounted on a printed-circuit
board; minimum footprint.
5.1 Transient thermal impedance
Min Typ Max Unit
-
-
0.5 K/W
-
60 -
K/W
-
50 -
K/W
1
Zth(j-mb)
(K/W)
δ = 0.5
0.2
10-1
0.1
0.05
0.02
single pulse
10-2
10-4
10-3
10-2
03aq20
P
δ=
tp
T
10-1
tp
t
T
1
tp (s)
Fig 4. Transient thermal impedance from junction to mounting base as a function of pulse duration.
9397 750 13157
Product data
Rev. 01 — 12 May 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
4 of 13