MSC0999.PDF 02-02-99
DSWUSD520-45) <-> (35125)
USD520
USD535
USD545
Features
Features::
Very Low Forward Voltage (0.6V at 60A, 125
C)
Low Recovered Charge
Rugged Package Design (DO-5)
High Efficiency for Low Voltage Supplies
Low Thermal Resistance (1.0
C/W)
High Surge Current (1000A)
Low Reverse Current (<50mA at rated V
R
at 125
C)
Description:
Description:
This series of Schottky barrier power rectifiers is ideally suited for
output rectifiers and catch diodes in low voltage power supplies. The
Microsemi high conductivity design, using a heavy copper top post
and 4 point crimp, ensures cool thermal operation and low dynamic
impedance. Rugged design absorbs stress that can damage glass-
to-metal seal during installation and use.
Absolute Maximum Ratings:
USD520 USD535 USD545
Working Peak Reverse Voltage, V
RWM
20V
35V
45V
DC Blocking Voltage, V
R
20V
35V
45V
Peak Repetitive Surge Voltage, V
RSM
@ I
RM
24V
42V
54V
Peak Repetitive Forward Current
(Rated V
R
1
Square Wave, 20KHz,
50 percent Duty Cycle), I
FRM
150A (at T
C
= 115
C)
Average Rectified Forward Current, I
F(AV)
75A (at T
C
= 115
C)
Non-repetitive Peak Surge Current (8.3mS), I
FSM
1000A
Peak Reverse Transient Current, I
RM
2A
Storage Temperature Range, T
STG
-55
to +200
C
Operating Junction Temperature, T
j
+175
C
Thermal Resistance Junction-to-Case, R
JC
1
C/W
Electrical Characteristics (T
CASE
= 25
C)
Characteristic
Symbol
Limit
Units
Conditions
USD545
Maximum Instantaneous
Reverse Current
i
R
20
(50)
mA
V
R
=V
RWM
(T
C
= 125
C)
Pulse Width = 300
s
Duty Cycle = 1 percent
Maximum Instantaneous
Forward Voltage
V
F
0.50
0.68
0.60
V
V
V
i
F
= 10A, T
C
= 25
C
i
F
= 60A, T
C
= 25
C
i
F
= 60A, T
C
= 125
C
Maximum Capacitance
C
t
4000
pF
V
R
= 5.0V
Maximum Voltage
Rate of Change
dv/dt
1000
V/
S
V
R
= rated
DO-5
150 Amp Pk,
Up to 45V
POWER SCHOTTKY
RECTIFIERS
580 Pleasant St.
Watertown, MA 02472
PH: (617) 926-0404
FAX: (617) 924-1235
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