BUK7504-40A Datasheet, PDF (4/15 Pages) NXP Semiconductors – TrenchMOS standard level FET

Philips Semiconductors
BUK75/76/7E04-40A
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 and
SOT226 packages
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
0.5
K/W
1
Zth(j-mb)
(K/W)
δ = 0.5
10-1 0.2
0.1
0.05
0.02
10-2
Single Shot
10-3
10-6
10-5
10-4
10-3
10-2
03ne69
P
δ
=
tp
T
tp
t
T
10-1
tp (s)
1
Fig 4. Transient thermal impedance from junction to mounting base as a function of pulse duration.
9397 750 09059
Product data
Rev. 02 — 7 November 2001
© Koninklijke Philips Electronics N.V. 2001. All rights reserved.
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