BUK7524_7624_55A_15 Datasheet, PDF (4/15 Pages) NXP Semiconductors – TrenchMOS standard level FET

Philips Semiconductors
BUK7524-55A; BUK7624-55A
TrenchMOS™ standard level FET
7. Thermal characteristics
Table 4: Thermal characteristics
Symbol Parameter
Conditions
R_th(j-a)
thermal resistance from junction to ambient
vertical in still air; SOT78 package
mounted on printed circuit board;
minimum footprint; SOT404
package
R_th(j-mb)
thermal resistance from junction to mounting Figure 4
base
7.1 Transient thermal impedance
Value Unit
60
K/W
50
K/W
1.4
K/W
10
Zth(j-mb)
(K/W)
1
δ = 0.5
0.2
10-1
0.1
0.05
0.02
10-2
10-6
Single Shot
10-5
10-4
10-3
03nb75
P
δ
=
tp
T
10-2
tp
t
T
10-1
1
tp (s)
Fig 4. Transient thermal impedance from junction to mounting base as a function of pulse duration.
9397 750 08029
Product specification
Rev. 02 — 01 March 2001
© Philips Electronics N.V. 2001. All rights reserved.
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