RBK8_ _40XX
GENERAL PURPOSE RECTIFIER DIODE
Powerex, Inc., 173 Pavilion Ln, Youngwood, PA 15697-1800 724 925-7272
www.pwrx.com
4000 Amperes 4500 Volts
Powerex General Purpose Rectifier Diodes are
designed with high locking voltage capability and
low forward voltage drop to minimize conduction
losses. These are packaged in hermetic, ceramic
Pow-R-Disc packages which can be mounted
using commercially available clamps and
heatsinks or fully assembled to a variety of air or
water cooled heat exchangers.
FEATURES:
Low On-State Voltage
Hermetic Ceramic Package
Excellent Surge and I
2
t Ratings
ORDERING INFORMATION
Select the complete 12 digit Part Number using the table below.
EXAMPLE: RBK84540XXOO is a 4500V-4000A General Purpose Diode
with a typical reverse recovery time of 30µs.
Voltage Voltage Current Current Reverse
Lead
PART
Rating
Code
Rating
Code Recovery
Code
V
DRM
-V
RRM
I
tavg
t
RR
RBK8
4500
4400
4200
4000
45
44
42
40
4000
40
XX
30µs typical
APPLICATIONS:
DC Power Supplies
Input Rectifiers
Plating Supplies
OO
Revised:
9/15/2013
Page 1
Absolute Maximum Ratings
Characteristic
Repetitive Peak Reverse Voltage
Average On-State Current, T
C
=80°C
RMS On-State Current, T
C
=80°C
Average On-State Current, T
C
=55°C
RMS On-State Current, T
C
=55°C
Peak One Cycle Surge Current, 60Hz, V
R
=0.6*V
RRM
Fuse Coordination I
2
t, 60Hz
Peak One Cycle Surge Current, 50Hz, V
R
=0V
Fuse Coordination I
2
t, 50Hz
Operating Temperature
Storage Temperature
Approximate Weight
Symbol
V
RRM
Rating
4500
4000
6283
4600
7226
53,700
1.20E+07
65,514
1.79E+07
-40 to+175
-50 to+200
2.5
1.13
Mounting Force
6,000 - 10,000
26.6 - 44.4
Units
Volts
A
A
A
A
A
A
2
s
A
A
2
s
°C
°C
lb
Kg
lbs
Knewtons
I
F(Avg.)
I
F(RMS)
I
F(Avg.)
I
F(RMS)
I
FSM
I
2
t
I
FSM
I
2
t
Tj
T
Stg.
Information presented is based upon manufacturers testing and projected
capabilities. This information is subject to change without notice. The
manufacturer makes no claim as to suitability for use, reliability, capability or
future availability of this product.
Page 2
Electrical Characteristics,
Tj=25°C unless otherwise specified
Rating
Characteristic
Repetitive Peak Reverse
Leakage Current
Peak On-State Voltage
V
FM
Model, Low Level
VFM = V
O
+
r•
I
FM
V
FM
Model, High Level
VFM = V
O
+
r•
I
FM
V
FM
Model, High Level
4-Term
V
FM
= A + B•Ln(I
FM
) +
C•(I
FM
) + D•(I
FM
)
Reverse Recovery Time
½
Symbol
I
RRM
V
FM
V
0
Test Conditions
Tj=175°C, V
RRM
=Rated
Tj=175°C, I
FM
=4000A
Tj=175°C
15%
I
FM
- π•I
FM
Tj=175°C
min
typ
100
max
150
1.35
0.75
0.133
0.88
0.122
0.597
0.0131
1.153E-04
0.00212
Units
ma
V
V
r
V
0
mΩ
V
r
A
B
C
D
π•I
FM
- I
FSM
Tj=175°C
mΩ
15%I
FM
- I
FSM
t
RR
Tj=25°C, I
FM
=2000A
di
R
/dt = 25 A/µs
30
µs
Thermal Characteristics
Characteristic
Thermal Resistance
Junction to Case
Case to Sink
Thermal Impedance Model
Symbol
Test Conditions
Double side cooled
Double side cooled
Double side cooled
where:
min
Rating
typ
0.010
0.0015
max
0.0115
0.002
Units
°C/Watt
°C/Watt
RΘ
jc
RΘ
cs
ZΘ
jc
ZΘ
jc
(t) =
Σ(A(
N
)•(1-exp(-t/
Tau
(
N
))))
N=
A(N
) =
T
au(N) =
1
1.020E-05
5.860E-04
2
8.786E-04
1.409E-02
3
4.154E-03
1.814E-01
4
6.431E-03
1.208E+00
Page 3
Maximum On-State Voltage Drop
5.00
4.50
4.00
VFM (V)
3.50
3.00
2.50
2.00
1.50
1.00
0.50
1000
Tj = 175°C
Thermal Impedance (°C/Watt)
MAXIMUM TRANSIENT THERMAL
IMPEDANCE
1.4E-02
1.2E-02
1.0E-02
8.0E-03
6.0E-03
4.0E-03
2.0E-03
0.0E+00
10000
IFM (A)
100000
0.01
0.1
1
Time (sec)
10
100
Maximum On-State Power Dissipation
SINE WAVE
12000
180
180°
10000
8000
6000
4000
2000
CONDUCTION ANGLE
Maximum Allowable Case Temperature
SINE WAVE
(°C)
Case Temperature
Power Dissipation (Watts)
90°
30°
160
140
120
100
80
60
CONDUCTION ANGLE
30°
0°
180°
360°
0°
180°
360°
90°
180°
4000
5000
0
0
1000
2000
3000
4000
5000
Average On-State Current (A)
0
1000
2000
3000
Average On-State Current (A)
Maximum On-State Power Dissipation
SQUARE WAVE
12000
Power Dissipation (Watts)
10000
8000
6000
4000
2000
0°
180°
360°
CONDUCTION ANGLE
Maximum Allowable Case Temperature
SQUARE WAVE
180
(°C)
Case Temperature
120°
60°
180°
360°
160
140
120
100
80
60
CONDUCTION ANGLE
360°
0°
180°
360°
60°
2000
3000
0
0
1000
2000
3000
4000
5000
6000
Average On-State Current (A)
120°
4000
180°
5000
6000
0
1000
Average On-State Current (A)
1
Page 4
0XX
Volts
ODE
amic
Page 5