Vishay 70CRU02PbF User Manual

TO-218

PRODUCT SUMMARY

t

rr

I

at TC = 145 °C 2 x 35 A

F(AV)

V

R

Anode

1

Base

common

cathode

2

1

2

Common

cathode

28 ns

200 V

Ultrafast Rectifier,

2 x 35 A FRED Pt

FEATURES

• Two common-cathode diodes

• Ultrafast reverse recovery

• Ultrafast reverse recovery current shape

• Low forward voltage drop

• Low leakage current

• Optimized for power conversion: welding and industrial

3

Anode

2

SMPS applications

• Up to 175 °C operating junction temperature

• Lead (Pb)-free (“PbF” suffix)

• Designed and qualified for industrial level

DESCRIPTION

The 70CRU02 integrates two state of the art Vishay HPP
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-to-dc converters. Their
extremely optimized stored charge and low recovery current
reduce both over-dissipation in the switching elements (and
snubbers) and EMI/RFI.

70CRU02PbF

Vishay High Power Products

TM

Available

RoHS*

COMPLIANT

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL TEST CONDITIONS MAX. UNITS

Continuous forward current per diode I

Cathode to anode voltage V

Single pulse forward current per diode I

Maximum power dissipation per module P

Operating junction and storage temperatures T

J

F(AV)

R

FSM

D

, T

TC = 145 °C 35 A

200 V

TC = 25 °C 300 A

TC = 100 °C 67 W

Stg

- 55 to 175 °C

ELECTRICAL SPECIFICATIONS PER DIODE (TJ = 25 °C unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITS

Breakdown voltage,
blocking voltage

Forward voltage V

Reverse leakage current I

Junction capacitance C

Series inductance L

,

V

BR

V

R

F

R

T

S

IR = 60 µA 200 - -

IF = 35 A - 0.95 1.09

I

= 35 A, TJ = 125 °C - 0.9 1.0

F

I

= 35 A, TJ = 175 °C - 0.85 0.9

F

VR = VR rated - - 60 µA

= 150 °C, VR = VR rated - - 2 mA

T

J

VR = 200 V - 50 - pF

Measured from A-lead to K-lead 5 mm
from package body

-10-nH

V

* Pb containing terminations are not RoHS compliant, exemptions may apply

Document Number: 94509 For technical questions, contact: [e-mail]
Revision: 21-Jul-08 1

www.vishay.com

70CRU02PbF

Vishay High Power Products

Ultrafast Rectifier,

2 x 35 A FRED Pt

TM

DYNAMIC RECOVERY CHARACTERISTICS PER DIODE (TJ = 25 °C unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITS

= 1 A

I

F

V

= 30 V

R

dI

/dt = 200 A/µs

F

= 35 A

I

F

= 100 V

V

RR

dI

/dt = 200 A/µs

F

--28

-26-

Reverse recovery time t

Peak recovery current I

Reverse recovery charge Q

rr

RRM

TJ = 25 °C

T

= 125 °C - 34 -

J

T

= 25 °C

J

= 125 °C - 49 -

T

J

TJ = 25 °C - 3.7 -

T

= 125 °C - 8.2 -

J

TJ = 25 °C - 48.7 -

rr

T

= 125 °C - 202 -

J

THERMAL - MECHANICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITS

Thermal resistance,
junction to case

Thermal resistance,
case to heatsink

per diode

both legs - - 0.45

R

thJC

R

thCS

Mounting surface, flat, smooth and greased - 0.2 -

Weight

Mounting torque

Marking device Case style TO-218 70CRU02

-0.80.9

-5.5- g

-0.2-oz.

1.2

(10)

2.4

­(20)

(lbf ⋅ in)

ns

A

µC

K/W

N ⋅ m

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Document Number: 94509

2 Revision: 21-Jul-08

70CRU02PbF

1000

(A)

100

F

T = 175˚C

10

Instantaneous Forward Current - I

T = 125˚C

T = 25˚C

Ultrafast Rectifier,

2 x 35 A FRED Pt

TM

Vishay High Power Products

1000

T = 175˚C

J

100

(μA)

R

125˚C

10

1

25˚C

Reverse Current - I

0.1

0.01
0 50 100 150 200

Reverse Voltage - VR (V)

Fig. 2 - Typical Values of Reverse Current vs.

Reverse Voltage

1000

J

J

J

(pF)

T

T = 25˚C

J

1

0 0.4 0.8 1.2 1.6 2 2.4 2.8 3.2 3.6 4

Forward Voltage Drop - VFM (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Diode)

1

(°C/W)

thJC

0.1

Single Pulse

(Thermal Resistance)

Thermal Impedance Z

0.01

0.0001 0.001 0.01 0.1 1

t1, Rectangular Pulse Duration (Seconds)

Fig. 4 - Maximum Thermal Impedance Z

100

Junction Capacitance - C

10

1 10 100 1000

Reverse Voltage - VR (V)

Fig. 3 - Typical Junction Capacitance vs.

P

DM

t

1

t

Notes:

1. Duty factor D = t1/ t2

2. Peak Tj = Pdm x ZthJC + Tc

Characteristics (Per Diode)

thJC

Reverse Voltage

2

Document Number: 94509 For technical questions, contact: [e-mail]

www.vishay.com

Revision: 21-Jul-08 3

70CRU02PbF

Vishay High Power Products

180

170

160

150

140

130

120

Square wave (D = 0.50)
Rated Vr applied

110

100

90

see note (1)

Allowable Case Temperature (°C)

80

0102030405060

Average Forward Current - I

Fig. 5 - Maximum Allowable Case Temperature vs.

Average Forward Current

50

DC

Ultrafast Rectifier,

2 x 35 A FRED Pt

(A)

F(AV)

TM

80

If = 35A
Vrr = 100V

70

60

50

40

trr ( ns )

30

20

10

0

100 1000

Fig. 7 - Typical Reverse Recovery Time vs. dIF/dt

600

If = 35A

500

Vrr = 100V

Tj = 125˚C

Tj = 25˚C

diF/dt (A/μs )

40

30

RMS Limit

20

10

Average Power Loss ( W )

0

0102030405060

Average Forward Current - I

Fig. 6 - Forward Power Loss Characteristics

Note

(1)

Formula used: TC = TJ - (Pd + Pd
Pd = Forward power loss = I
Pd

= Inverse power loss = VR1 x IR (1 - D); IR at VR1 = Rated V

REV

x VFM at (I

F(AV)

REV

) x R

D = 0.20
D = 0.25
D = 0.33
D = 0.50
D = 0.75
DC

F(AV)

;

thJC

F(AV)

(A)

/D) (see fig. 6);

400

Tj = 125˚C

300

Qrr ( nC )

200

100

0

100 1000

Fig. 8 - Typical Stored Charge vs. dI

R

Tj = 25˚C

diF/dt (A/μs )

/dt

F

www.vishay.com For technical questions, contact: [e-mail]

Document Number: 94509

4 Revision: 21-Jul-08

70CRU02PbF

Ultrafast Rectifier,

2 x 35 A FRED Pt

L = 70 µH

dIF/dt

adjust

Fig. 9 - Reverse Recovery Parameter Test Circuit

I

F

0

(1)

/dt - rate of change of current

(1) dI

F

through zero crossing

(2) I

- peak reverse recovery current

RRM

- reverse recovery time measured

(3) t

rr

from zero crossing point of negative
going I
through 0.75 I
extrapolated to zero current.

to point where a line passing

F

and 0.50 I

RRM

Fig. 10 - Reverse Recovery Waveform and Definitions

dIF/dt

RRM

G

TM

Vishay High Power Products

V

= 200 V

R

0.01 Ω

D.U.T.

D

IRFP250

S

(3)

t

rr

t

a

(2)

I

RRM

t

b

(4)

Q

rr

0.5 I

RRM

dI

/dt

(rec)M

0.75 I

RRM

(4) Q

- area under curve defined by t

rr

and I

RRM

trr x I

(5) dI
current during t

=

Q

rr

/dt - peak rate of change of

(rec)M

portion of t

b

(5)

rr

RRM

2

rr

Document Number: 94509 For technical questions, contact: [e-mail]

www.vishay.com

Revision: 21-Jul-08 5

70CRU02PbF

Vishay High Power Products

ORDERING INFORMATION TABLE

Device code

70 C R U 02 PbF

1 - Current rating (70 = 70 A)

2 - Common cathode

3 -TO-218

4 - Ultrafast recovery

5 - Voltage rating (02 = 200 V)

6

Tube standard pack quantity: 30 pieces

Ultrafast Rectifier,

2 x 35 A FRED Pt

-

None = Standard production

PbF = Lead (Pb)-free

TM

51324

6

LINKS TO RELATED DOCUMENTS

Dimensions http://www.vishay.com/doc?95214

Part marking information http://www.vishay.com/doc?95219

www.vishay.com For technical questions, contact: [e-mail]
6 Revision: 21-Jul-08

Document Number: 94509

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Vishay

Disclaimer

All product specifications and data are subject to change without notice.

Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf
(collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein
or in any other disclosure relating to any product.

Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any
information provided herein to the maximum extent permitted by law. The product specifications do not expand or
otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed
therein, which apply to these products.

No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this
document or by any conduct of Vishay.

The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
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Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1