RDK8__85XX
GENERAL PURPOSE RECTIFIER DIODE
Powerex, Inc., 200 Hillis Street, Youngwood, PA
15697-1800 (724) 925-7272
WWW.PWRX.COM
8500 Amperes 3000 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: RDK83085XXOO is a 3000V-8500A General Purpose Diode
with a typical reverse recovery time of 35µs.
Voltage Voltage Current Current Reverse
Lead
PART
Rating
Code
Rating
Code Recovery
Code
I
tavg
t
RR
V
DRM
-V
RRM
RDK8
3000V
2600V
2400V
30
26
24
8500A
85
XX
35µs typical
APPLICATIONS:
DC Power Supplies
Input Rectifiers
Plating Supplies
OO
Revised:
9/30/2005
Page 1
RDK8__85XX
GENERAL PURPOSE RECTIFIER DIODE
Powerex, Inc., 200 Hillis Street, Youngwood, PA
15697-1800 (724) 925-7272
WWW.PWRX.COM
8500 Amperes 3000 Volts
Absolute Maximum Ratings
Characteristic
Repetitive Peak Reverse Voltage
Average On-State Current, T
C
=90°C
RMS On-State Current, T
C
=90°C
Average On-State Current, T
C
=55°C
RMS On-State Current, T
C
=55C
Peak One Cycle Surge Current, 60Hz, V
R
=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
3000
8500
13352
10000
15708
100,000
4.17E+07
92,500
4.28E+07
-40 to+160
-50 to+190
6.5
2.95
Mounting Force
16,000 - 20,000
71.2 - 89.0
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.
The information on this datasheet is based upon Powerex testing and projected ratings and is subject to change without notice.
Powerex makes no implicit or explicit claim to reliability, capability, performance or suitability of this product for a users application.
Powerex makes no guarantee of future availability of this product.
Page 2
RDK8__85XX
GENERAL PURPOSE RECTIFIER DIODE
Powerex, Inc., 200 Hillis Street, Youngwood, PA
15697-1800 (724) 925-7272
WWW.PWRX.COM
8500 Amperes 3000 Volts
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, 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=160°C, V
RRM
=Rated
Tj=160°C, I
FM
=4000A
Tj=160°C
15%
I
FM
-
π•I
FM
Tj=160°C
min
typ
150
max
300
0.82
0.762
5.28E-02
0.937
4.58E-02
0.462
3.10E-02
4.24E-05
1.43E-03
Units
ma
V
V
r
V
0
mΩ
V
r
A
B
C
D
π•I
FM
- I
FSM
Tj=160°C
mΩ
15%I
FM
- I
FSM
t
RR
Tj=25°C, I
FM
=400A
di
R
/dt = 25 A/µs
35
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
0.006
0.0008
max
0.0063
0.001
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
1.43E-04
2.62E-03
2
9.08E-04
4.31E-02
3
2.07E-03
6.05E-01
4
3.20E-03
6.00E+00
Page 3
RDK8__85XX
GENERAL PURPOSE RECTIFIER DIODE
Powerex, Inc., 200 Hillis Street, Youngwood, PA
15697-1800 (724) 925-7272
WWW.PWRX.COM
8500 Amperes 3000 Volts
Maximum On-State Voltage Drop
3.00
2.75
2.50
2.25
2.00
1.75
1.50
1.25
1.00
0.75
0.50
1000
MAXIMUM TRANSIENT THERMAL
IMPEDANCE
7.0E-03
Thermal Impedance
(°C/Watt)
Tj = 175°C
6.0E-03
5.0E-03
4.0E-03
3.0E-03
2.0E-03
1.0E-03
0.0E+00
0.01
0.1
1
Time (sec)
10
100
VFM (V)
10000
IFM (A)
100000
POWER DISSIPATION
16000
POWER DISSIPATION (Watts)
120°
Square
(3Φ)
12000
180
160
140
120
100
80
60
0
ALLOWABLE CASE TEMPERATURE
CASE TEMPERATURE (°C)
180°
Sine
(1Φ)
8000
180°
Sine
(1Φ)
120°
Square
(3Φ)
4000
0
0
2000
4000
6000
8000
10000
AVERAGE FWD CURRENT (A)
2000
4000
6000
8000
10000
AVERAGE FWD CURRENT (A)
Page 4
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