PHP108NQ03LT Datasheet, PDF (4/14 Pages) NXP Semiconductors – TrenchMOS logic level FET

Philips Semiconductors
PHP/PHB/PHD108NQ03LT
TrenchMOS™ logic level FET
4. Thermal characteristics
Table 3: 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
SOT428
SOT428 minimum footprint;
mounted on a PCB
SOT404 and SOT428
SOT404 minimum footprint;
mounted on a PCB
4.1 Transient thermal impedance
Min Typ Max Unit
- - 0.8 K/W
- 60 - K/W
- 75 - 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
10-5
10-4
10-3
10-2
003aaa191
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 10159
Product data
Rev. 02 — 11 September 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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