1
Case Styles
70CRU02
Bulletin PD-20619 rev. B 02/02
t
rr
= 28ns
I
F(AV)
= 70A
@T
C
= 145C
V
R
= 200V
Features
Description/ Applications
Absolute Maximum Ratings
Ultrafast Rectifier
V
R
Cathode to Anode Voltage
200
V
I
F(AV)
Continuous Forward Current
T
C
= 145C
Per Diode
35
A
I
FSM
Single Pulse Forward Current
T
C
= 25C
Per Diode
300
P
D
Maximum Power Dissipation
T
C
= 100C
Per Module
67
W
T
J
,
T
STG
Operating Junction and Storage Temperatures
- 55 to 175
C
Parameters
Max
Units
Two Common-Cathode Diodes
Ultrafast Reverse Recovery
Ultrasoft Reverse Recovery Current Shape
Low Forward Voltage Drop
Low Leakage Current
Optimized for Power Conversion: Welding and Industrial SMPS Applications
Up to 175C Operating Junction Temperature
The 70CRU02 integrates two state-of-the-art International Rectifier's Ultrafast recovery rectifiers in the common-
cathode configuration. The planar structure of the diodes, and the platinum doping life-time control, provide a
Ultrasoft recovery current shape, together with the best overall performance, ruggedness and reliability
characteristics.
These devices are thus intended for high frequency applications in which the switching energy is designed not to be
predominant portion of the total energy, such as in the output rectification stage of Welding machines, SMPS, DC-
DC converters. Their extremely optimized stored charge and low recovery current reduce both over-dissipation in
the switching elements (and snubbers) and EMI/RFI.
70CRU02
TO-218
www.irf.com
Base
Common
Cathode
Anode
Anode
Common
Cathode
1
3
2
1
2
2
70CRU02
Bulletin PD-20619 rev. B 02/02
2
www.irf.com
V
BR
,
V
r
Breakdown Voltage,
200
-
-
V
I
R
= 60A
Blocking Voltage
V
F
Forward Voltage
-
0.95 1.09
V
I
F
= 35A
-
0.9
1.0
V
I
F
= 35A, T
J
= 125C
-
0.85
0.9
V
I
F
= 35A, T
J
= 175C
I
R
Reverse Leakage Current
-
-
60
A
V
R
= V
R
Rated
-
-
2
mA
T
J
= 150C, V
R
= V
R
Rated
C
T
Junction Capacitance
-
50
-
pF
V
R
= 200V
L
S
Series Inductance
-
10
-
nH
Measured from A-lead to K-lead 5mm from
package body
Electrical Characteristics per Diode @ T
J
= 25C (unless otherwise specified)
Parameters
Min Typ Max Units Test Conditions
t
rr
Reverse Recovery Time
-
-
28
ns
T
J
= 25C
-
34
-
T
J
= 125C
-
26
-
T
J
= 25C
-
49
-
T
J
= 125C
I
RRM
Peak Recovery Current
-
3.7
-
A
T
J
= 25C
-
8.2
-
T
J
= 125C
Q
rr
Reverse Recovery Charge
-
48.7
-
nC
T
J
= 25C
-
202
-
T
J
= 125C
Dynamic Recovery Characteristics per Diode @ T
J
= 25C (unless otherwise specified)
I
F
= 1A
V
R
= 30V
di
F
/dt = 200A/s
Parameters
Min Typ Max Units Test Conditions
Thermal - Mechanical Characteristics
Parameters
Min
Typ
Max
Units
R
thJC
Thermal Resistance, Junction to Case
Per Diode
-
0.8
0.9
K/W
R
thJC
Thermal Resistance, Junction to Case
Both Leg
-
-
0.45
R
thCS
(1)
Thermal Resistance, Case to Heatsink
-
0.2
-
Wt
Weight
-
5.5
-
g
-
0.2
-
(oz)
T
Mounting Torque
1.2
-
2.4
N * m
10
-
20
lbf.in
(1) Mounting Surface, Flat, Smooth and Greased
I
F
= 35A
V
RR
= 100V
di/dt = 200A/s
Bulletin PD-20619 rev. B 02/02
3
70CRU02
www.irf.com
Fig. 1 - Typical Forward Voltage Drop Characteristics
(Per Diode)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Diode)
Forward Voltage Drop - V
FM
(V)
Instantaneous Forward Current - I
F
(A)
Reverse Voltage - V
R
(V)
Reverse Voltage - V
R
(V)
Junction Capacitance - C
T
(pF)
t
1
, Rectangular Pulse Duration (Seconds)
Thermal Impedance Z
thJC
(C/W)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage
Reverse Current - I
R
(A)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage
1
10
100
1000
0
0.4 0.8 1.2 1.6
2
2.4 2.8 3.2 3.6
4
T = 175C
T = 125C
T = 25C
J
J
J
0.01
0.1
1
10
100
1000
0
50
100
150
200
25C
T = 175C
J
125C
0.01
0.1
1
0.0001
0.001
0.01
0.1
1
Single Pulse
(Thermal Resistance)
2
t
1
t
P
DM
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
10
100
1000
1
10
100
1000
T = 25C
J
70CRU02
Bulletin PD-20619 rev. B 02/02
4
www.irf.com
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
Fig. 8 - Typical Stored Charge vs. di
F
/dt
Fig. 6 - Forward Power Loss Characteristics
(3) Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
Average Forward Current - I
F(AV)
(A)
Fig. 7 - Typical Reverse Recovery vs. di
F
/dt
Allowable Case Temperature (C)
Average Power Loss ( W )
trr ( nC )
Qrr ( nC )
di
F
/dt (A/s )
di
F
/dt (A/s )
80
90
100
110
120
130
140
150
160
170
180
0
10
20
30
40
50
60
DC
Square wave (D = 0.50)
Rated Vr applied
see note (3)
0
10
20
30
40
50
0
10
20
30
40
50
60
RMS Limit
D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC
0
10
20
30
40
50
60
70
80
100
1000
If = 35A
Vrr = 100V
Tj = 125C
Tj = 25C
0
100
200
300
400
500
600
100
1000
If = 35A
Vrr = 100V
Tj = 125C
Tj = 25C
Average Forward Current - I
F(AV)
(A)
Bulletin PD-20619 rev. B 02/02
5
70CRU02
www.irf.com
Fig. 10 - Reverse Recovery Waveform and
Definitions
Fig. 9 - Reverse Recovery Parameter Test
Circuit
IRFP250
D.U.T.
L = 70H
V = 200V
R
0.01
G
D
S
dif/dt
ADJUST
4. Q
rr
- Area under curve defined by
t
rr
and I
RRM
5. di
(rec) M
/ dt - Peak rate of change
of current during t
b
portion of t
rr
1. di
F
/dt - Rate of change of current through
zero crossing
2. I
RRM
- Peak reverse recovery current
3. t
rr
- Reverse recovery time measured from
zero crossing point of negative going I
F
to
point where a line passing through 0.75 I
RRM
and 0.50 I
RRM
extrapolated to zero current
Q
rr =
t rr x I
RRM
2
t
a
t
b
t
rr
Q
rr
I
F
I
RRM
I
RRM
0.5
di(rec)M/dt
0.75 I
RRM
5
4
3
2
0
1
di /dt
f
Outline Table
Dimensions in inches (and milimetres)
70CRU02
Bulletin PD-20619 rev. B 02/02
6
www.irf.com
Ordering Information Table
Device Code
1
5
2
4
3
1
-
Current Rating
(70 = 70A)
2
-
Common Cathode
3
-
TO-218
4
-
Ultrafast Recovery
5
-
Voltage Rating
(02 = 200V)
70
C
R
U
02
IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105
TAC Fax: (310) 252-7309
Visit us at www.irf.com for sales contact information. 02/02
Data and specifications subject to change without notice.
This product has been designed and qualified for Industrial Level.
Qualification Standards can be found on IR's Web site.
70CRU02
0J54
0047
INTERNATIONAL RECTIFIER LOGO
IR PART NUMBER
DATE CODE (YYWW)
YY = YEAR
WW = WEEK
ASSEMBLY LOT CODE
Marking Information
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