Datasheet

2002 Feb 27 6
NXP Semiconductors Product data sheet
Voltage regulator diodes BZX79 series
THERMAL CHARACTERISTICS
Note
1. Device mounted on a printed circuit-board without metallization pad.
SYMBOL PARAMETER CONDITIONS VALUE UNIT
R
th j-tp
thermal resistance from junction to tie-point lead length 8 mm. 300 K/W
R
th j-a
thermal resistance from junction to ambient lead length max.; see Fig.2 and note 1 380 K/W
GRAPHICAL DATA
handbook, full pagewidth
10
−1
11010
2
10
3
10
4
10
5
MBG930
10
2
10
1
10
3
t
p
(ms)
t
p
t
p
T
T
δ =
0.02
0.01
≤0.001
0.75
0.50
0.33
0.20
0.10
0.05
δ = 1
R
th j-a
(K/W)
Fig.2 Thermal resistance from junction to ambient as a function of pulse duration.