Datasheet

1N4728A_SER_2 © NXP B.V. 2009. All rights reserved.
Product data sheet Rev. 02 — 30 October 2009 3 of 10
NXP Semiconductors
1N4728A to 1N4749A
Voltage regulator diodes
6. Thermal characteristics
7. Characteristics
Table 6. Thermal characteristics
Symbol Parameter Conditions Min Typ Max Unit
R
th(j-t)
thermal resistance from
junction to tie-point
lead length 4 mm - - 110 K/W
Fig 1. Thermal resistance from junction to tie-point as a function of pulse duration;
lead length 4 mm
006aab843
10
−1
11010
2
10
3
10
4
10
5
1
10
10
2
10
3
R
th(j-t)
(K/W)
t
p
(ms)
0.02
0.01
0
δ = 1
0.75
0.50
0.33
0.20
0.10
0.05
Table 7. Characteristics
T
j
=25 ° C unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
F
forward voltage I
F
= 200 mA - - 1.2 V