MOSPEC
URAF0830 Thru URAF0860
Switchmode
Full Plastic Ultra-fast 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 50 & 75 Nanosecond Recovery Time
Plastic Material used Carries Underwriters Laboratory
MAXIMUM RATINGS
URAF08
Characteristic Symbol
30 40 50 60
Unit
Peak Repetitive Reverse Voltage
Working Peak Reverse Voltage
DC Blocking Voltage
V
RRM
V
RWM
V
R
300 400 500 600 V
RMS Reverse Voltage
V
R(RMS)
210 280 350 420 V
Average Rectifier Forward Current
Per Leg T
C
=125
I
F(AV)
8.0 A
Peak Repetitive Forward Current
(Rate V
R
, Square Wave, 20kHz,T
C
=125
)
I
FM
16 A
Non-Repetitive Peak Surge Current
(Surge applied at rate load conditions
halfware, single phase, 60Hz)
I
FSM
100 A
Operating and Storage Junction
Temperature Range
T
J
, T
stg
-65 to +150
ELECTRIAL CHARACTERISTICS
URAF08
Characteristic Symbol
30 40 50 60
Unit
Maximum Instantaneous Forward Voltage
( I
F
=8 Amp T
C
= 25
)
( I
F
=8 Amp T
C
= 125
)
V
F
1.30
1.12
1.50
1.34
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
50 ns
Typical Junction Capacitance
(Reverse Voltage of 4 volts & f=1 MHz)
C
P
85
70
P
F
ULTRA FAST
RECTIFIERS
8 AMPERES
300-600 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
5.20
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
URAF0830 Thru URAF0860
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)
FIG-2 TYPICAL REVERSE CHARACTERISTICS
INST
ANT
A
NEOUS REVERSE CURRENT
(uA.)
PERCENT OF PEAK REVERSE VOLTAGE (
)
URAF0830-40
URAF0830-40
URAF0830-40
URAF0850-60
URAF0850-60
URAF0850-60
Set time base for 10/20 ns/cm
FIG-6 Reverse Recovery Time Characteristic and Test Circuit Diagram
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