RD43FF
1/7
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FEATURES
s
Optimised For High Current Rectifiers
s
High Surge Capability
s
Very Low On-state Voltage
APPLICATIONS
s
Electroplating
s
Power Supplies
s
Welding
VOLTAGE RATINGS
ORDERING INFORMATION
When ordering, select the required part number shown in the
Voltage Ratings selection table.
For example:
RD43FF04
Note: Please use the complete part number when ordering and
quote this number in any future correspondance relating to your
order.
KEY PARAMETERS
V
RRM
600V
I
F(AV)
(max)
4466A
I
FSM
(max)
51500A
RD43FF
Rectifier Diode
Target Information
Replaces November 2000, version DS5414-1.1
DS5414-2.0 October 2001
Fig. 1 Package outline
Outline type code: F
(See Package Details for further information)
Conditions
V
RSM
= V
RRM
600
500
400
300
200
100
RD43FF06
RD43FF05
RD43FF04
RD43FF03
RD43FF02
RD43FF01
Part and Ordering
Number
Repetitive Peak
Reverse Voltage
V
RRM
V
RD43FF
2/7
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Symbol
I
F(AV)
I
F(RMS)
I
F
I
F(AV)
I
F(RMS)
I
F
Test Conditions
Half wave resistive load
-
-
Half wave resistive load
-
-
Units
A
A
A
A
A
A
Max.
4220
6630
5815
2950
4635
3805
Parameter
Mean forward current
RMS value
Continuous (direct) forward current
Mean forward current
RMS value
Continuous (direct) forward current
Single Side Cooled
Double Side Cooled
CURRENT RATINGS
T
case
= 75
o
C unless otherwise stated
Symbol
Parameter
Conditions
Double Side Cooled
I
F(AV)
Mean forward current
I
F(RMS)
RMS value
I
F
Continuous (direct) forward current
Single Side Cooled (Anode side)
I
F(AV)
Mean forward current
I
F(RMS)
RMS value
I
F
Continuous (direct) forward current
Units
Max.
Half wave resistive load
4466
A
-
7014
A
-
6189
A
Half wave resistive load
3133
A
-
4922
A
-
4066
A
T
case
= 85
o
C unless otherwise stated
RD43FF
3/7
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Units
mA
A
C
V
m
Parameter
Thermal resistance - junction to case
Thermal resistance - case to heatsink
Virtual junction temperature
Storage temperature range
Clamping force
Parameter
Surge (non-repetitive) forward current
I
2
t for fusing
Surge (non-repetitive) forward current
I
2
t for fusing
Test Conditions
10ms half sine, T
case
= 175C
V
R
= 50% V
RRM
- 1/4 sine
10ms half sine, T
case
= 175C
V
R
= 0
Symbol
I
FSM
I
2
t
I
FSM
I
2
t
SURGE RATINGS
Units
kA
A
2
s
kA
A
2
s
Max.
41.2
8.49 x 10
6
51.5
13.26 x 10
6
Test Conditions
At V
RRM
, T
case
= 200C
I
F
= 2000A, dI
RR
/dt = 3A/
s,
T
case
= 200C, V
R
= 100V
At T
vj
= 200C
At T
vj
= 200C
Parameter
Peak reverse current
Peak reverse recovery current
Total stored charge
Threshold voltage
Slope resistance
CHARACTERISTICS
Symbol
I
RM
I
rr
Q
S
V
TO
r
T
Max.
50
25
150
0.6
0.0514
Min.
-
-
-
-
-
Test Conditions
Double side cooled
DC
Single side cooled
Anode DC
Cathode DC
Clamping force 19.5kN
Double side
(with mounting compound)
Single side
Forward (conducting)
Reverse (blocking)
THERMAL AND MECHANICAL RATINGS
Symbol
R
th(j-c)
R
th(c-h)
T
vj
T
stg
F
m
Units
CW
CW
CW
CW
CW
C
C
C
kN
Max.
0.022
0.038
0.052
0.004
0.008
225
200
200
21.6
Min.
-
-
-
-
-
-
-
55
17.6
RD43FF
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CURVES
Fig. 2 Maximum (limit) forward characteristics
Fig. 3 Power dissipation
Fig. 4 Maximum stored charge and reverse recovery current vs dI/dt
0
1000
2000
3000
4000
5000
6000
0.5
0.55
0.6
0.65
0.7
0.75
0.8
0.85
0.9
Instantaneous forward voltage, V
F
- (V)
Instantaneous forward current, I
F
- (A)
T
j
= 200C
0
1000
2000
3000
4000
5000
6000
7000
0
1000
2000
3000
4000
5000
6000
7000
Mean forward current, I
F(AV)
- (A)
Mean power dissipation - (W)
dc
1/2 wave
3 phase
6 phase
0.1
1.0
10
100
Rate of decay of forward current, dI
F
/dt - (A/s)
1000
100
10
Stored charge Q
S
- (
C)
Conditions:
T
j
= 200C
V
R
= 100V
I
F
= 2000A
I
RM
Q
S
I
F
dI/dt
1000
100
10
Reverse recovery current I
RR
- (A)
Max. Q
S
Max. I
RR
RD43FF
5/7
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Fig. 6 Maximum (limit) transient thermal impedance
Fig. 5 Surge (non-repetitive) forward current vs time
(with 50% V
RRM
@ T
case
= 175C)
1
10
1
2 3 5
10
20
50
0
20
40
60
80
100
6
7
5
4
8
9
I
2
t value - (A
2
s x 10
6
)
ms
Cycles at 50Hz
Duration
Peak half sine forward current - (kA)
I
2
t =
2
x t
2
I
2
t
0.1
0.01
0.001
Thermal Impedance - Junction to case (
C/W)
0.001
0.01
0.1
1.0
10
Time - (s)
Double side cooled
Anode side cooled
Conduction
d.c.
Halfwave
3 phase 120
6 phase 60
Effective thermal resistance
Junction to case C/W
Double side
0.022
0.024
0.026
0.027
Anode side
0.038
0.040
0.042
0.043
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