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| BUJ303A_11 Datasheet, PDF (5/14 Pages) NXP Semiconductors – NPN power transistor Low thermal resistance Fast switching | |||
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NXP Semiconductors
BUJ303A
NPN power transistor
5. Thermal characteristics
Table 5.
Symbol
Rth(j-mb)
Rth(j-a)
Thermal characteristics
Parameter
thermal resistance from junction to mounting
base
thermal resistance from junction to ambient
Conditions
see Figure 5
in free air
Min Typ Max Unit
-
-
1.25 K/W
-
60 -
K/W
10
Zth(j-mb)
(K/W)
1 δ = 0.5
0.2
0.1
0.05
10-1
0.02
0
003aag030
Ptot
tp
δ=
T
10-2
10-5
10-4
10-3
10-2
10-1
tp
t
T
1
10
tp (s)
Fig 5. Transient thermal impedance from junction to mounting base as a function of pulse width
BUJ303A
Product data sheet
All information provided in this document is subject to legal disclaimers.
Rev. 05 â 3 May 2011
© NXP B.V. 2011. All rights reserved.
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