UPS120E3 Microsemi Corporation, UPS120E3 Datasheet - Page 3

• Manufacturer Part Number: UPS120E3
• Description: 1.0 A Schottky Barrier Rectifier
• Manufacturer: Microsemi Corporation

Copyright © 2007
6-26-2007 Rev C
* Reverse power dissipation and the possibility of thermal runaway must be considered when operating this
device under any reverse voltage conditions. Calculations of T
power effects. The allowable operating T
T
This graph displays the derated allowable T
J
= T
J max
-r(t) Pr, Where r(t)=Rthja. For other power applications further calculations must be performed.
T
r(t) = thermal impedance under given conditions.
Pf = forward power dissipation, and
Pr = reverse power dissipation
J
= T
J max
= r(t)(Pf+Pr) where
Forward Power Dissipation
CHARTS AND GRAPHS
Microsemi
FIGURE 2
J
FIGURE 1
may be calculated from the equation:
J
due to reverse bias under DC conditions only and is calculated as
1.0 A Schottky Barrier Rectifier
J
therefore must include forward and reverse
UPS120e3
Page 3