MOSPEC
URAF1505 Thru URAF1520
Switchmode
Full Plastic Dual Ultrafast Power Rectifiers
...Designed for use in switching power supplies. inverters and as free
wheeling diodes. These state-of-the-art devices have the following
features:
High Surge Capacity
Low Power Loss, High efficiency
Glass Passivated chip junctions
150
Operating Junction Temperature
Low Stored Charge Majority Carrier Conduction
Low Forward Voltage , High Current Capability
High-Switching Speed 35 Nanosecond Recovery Time
Plastic Material used Carries Underwriters Laboratory
MAXIMUM RATINGS
URAF15
Characteristic Symbol
05 10 15 20
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
50 100 150 200 V
RMS Reverse Voltage
V
R(RMS)
35 70 105 140 V
Average Rectifier Forward Current
Per Leg T
C
=55
I
F(AV)
15
A
Peak Repetitive Forward Current
(Rate V
R
, Square Wave, 20kHz,
)
I
FM
30 A
Non-Repetitive Peak Surge Current
(Surge applied at rate load conditions
half-ware, single phase, 60Hz)
I
FSM
250 A
Operating and Storage Junction
Temperature Range
T
J
, T
stg
-65 to +150
ELECTRIAL CHARACTERISTICS
URAF15
Characteristic Symbol
05 10 15 20
Unit
Maximum Instantaneous Forward Voltage
( I
F
=15 Amp T
C
= 25
)
( I
F
=15 Amp T
C
= 125
)
V
F
0.975
0.870
V
Maximum Instantaneous Reverse Current
( Rated DC Voltage, T
C
= 25
)
( Rated DC Voltage, T
C
= 125
)
I
R
10
500
uA
Reverse Recovery Time
( I
F
= 0.5 A, I
R
=1.0 , I
rr
=0.25 A )
T
rr
35 ns
Typical Junction Capacitance
(Reverse Voltage of 4 volts & f=1 MHz)
C
P
250
P
F
ULTRA FAST
RECTIFIERS
15 AMPERES
50-200 VOLTS
ITO-220AC
MILLIMETERS
DIM
MIN MAX
A 15.05 15.15
B 13.35
13.45
C 10.00
10.10
D 6.55
6.65
E 2.65
2.75
F
1.00
G 1.15
1.25
H 0.55
0.65
I 4.80
3.20
J 3.00
3.20
K 1.10
1.20
L 0.55
0.65
M 4.40
4.60
N 1.15
1.25
P 2.65
2.75
O 3.35
3.45
Q 3.15
3.25
URAF1505 Thru URAF1520
FIG-3 FORWARD CURRENT DERATING CURVE
A
VERAGE FOR
W
ARD RECT
IFIED CURRENT
(A
m
p
.)
LEAD TEMPERATURE (
)
FIG-4TYPICAL JUNCTION CAPACITANCE
J
UNCT
ION CAP
A
CIT
A
NCE (
P
F)
REVERSE VOLTAGE (Volts.)
FIG-5PEAK FORWARD SURGE CURRENT
PEAK F
O
R
W
ARD SURG
E CURRENT
(
A
m
p
.)
NUMBER OF CYCLES AT 60 Hz
FIG-1 TYPICAL FORWARD CHARACTERISITICS
A
V
E
R
A
G
E
FOR
W
A
RD RE
CT
IFIE
D CURRE
NT
(A
m
p
.)
FORWARD VOLTAGE (Volts)
0
50
100
150
200
250
1
10
100
FIG-2 TYPICAL REVERSE CHARACTERISTICS
INST
ANT
A
NEOUS REVERSE CURRENT
(uA.)
PERCENT OF PEAK REVERSE VOLTAGE (
)
Set time base for 10/20 ns/cm
FIG-6 Reverse Recovery Time Characteristic and Test Circuit Diagram
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