BZX79-B/C3V9 データシートの表示（PDF） - NXP Semiconductors.
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BZX79-B/C3V9 Datasheet PDF : 10 Pages
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NXP Semiconductors
Voltage regulator diodes
Product data sheet
BZX79 series
THERMAL CHARACTERISTICS
SYMBOL
PARAMETER
CONDITIONS
VALUE
Rth j-tp
Rth j-a
thermal resistance from junction to tie-point lead length 8 mm.
300
thermal resistance from junction to ambient lead length max.; see Fig.2 and note 1 380
Note
1. Device mounted on a printed circuit-board without metallization pad.
UNIT
K/W
K/W
GRAPHICAL DATA
handbook1, 0fu3ll pagewidth
Rth j-a
(K/W)
102
δ=1
0.75
0.50
0.33
0.20
0.10
0.05
MBG930
0.02
0.01
10
≤0.001
tp
T
δ
=
tp
T
1
10−1
1
10
102
103
104
tp (ms)
105
Fig.2 Thermal resistance from junction to ambient as a function of pulse duration.
2002 Feb 27
6
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