Vishay 70CRU04PbF User Manual

TO-218

PRODUCT SUMMARY

t

rr

I

at TC = 116 °C 2 x 35 A

F(AV)

V

R

Anode

1

Base

common

cathode

2

1

2

Common

cathode

38 ns

400 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 70CRU04 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.

70CRU04PbF

Vishay High Power Products

TM

Available

RoHS*

COMPLIANT

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL TEST CONDITIONS MAX. UNITS

Cathode to anode voltage V

Continuous forward current per diode I

Single pulse forward current per diode I

Maximum power dissipation per module P

Operating junction and storage temperatures T

J

R

F(AV)

FSM

D

, T

TC = 116 °C 35

TC = 25 °C 300

TC = 100 °C 47 W

Stg

400 V

A

- 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

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

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,

V

BR

V

R

F

R

T

IR = 100 µA 400 - -

IF = 35 A - 1.11 1.32

= 35 A, TJ = 125 °C - 0.98 1.14

I

F

I

= 35 A, TJ = 175 °C - 0.92 1.05

F

VR = VR rated - - 100 µA

T

= 150 °C, VR = VR rated - - 2 mA

J

VR = 400 V - 70 - pF

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V

70CRU04PbF

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

Reverse recovery time t

Reverse recovery time t

Peak recovery current I

Reverse recovery charge Q

rr

rr

RRM

IF = 1 A, dIF/dt = 200 A/µs, VR = 30 V - 32 38

TJ = 25 °C

= 125 °C - 130 -

T

J

TJ = 25 °C - 7.7 -

T

= 125 °C - 16.5 -

J

TJ = 25 °C - 0.28 -

rr

T

= 125 °C - 1.08 -

J

= 35 A

I

F

= 200 V

V

R

dI

/dt = 200 A/µs

F

-72-

THERMAL - MECHANICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNITS

Thermal resistance,
junction to case

Thermal resistance, case to heatsink R

Weight

Mounting torque

Marking device Case style TO-218 70CRU04

per diode

R

thJC

thCS

Mounting surface, flat, smooth and greased - 0.2 -

-0.81.6

-4-g

-0.13- oz.

1.2

(10)

2.4

­(20)

(lbf ⋅ in)

ns

A

µC

K/Wboth diodes - 0.4 0.8

N ⋅ m

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2 Revision: 21-Jul-08

Document Number: 94510

70CRU04PbF

1000

(A)

F

100

10

Instantaneous Forward Current - I

Tj = 175˚C

Tj = 125˚C

Tj = 25˚C

Ultrafast Rectifier,

2 x 35 A FRED Pt

TM

Vishay High Power Products

1000

100

(μA)

R

10

1

0.1

Reverse Current - I

0.01

0.001
50 100 150 200 250 300 350 400

Reverse Voltage - V (V)

Fig. 2 - Typical Values of Reverse Current vs.

Reverse Voltage

1000

Tj = 25˚C

(pF)

T

Tj = 175˚C

150˚C

125˚C

25˚C

1

0 0.5 1 1.5 2 2.5 3

Forward Voltage Drop - VFM (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Diode)

10

(°C/W)

thJC

1

0.1

Thermal Impedance Z

0.01

0.0001 0.001 0.01 0.1 1 10

Single Pulse

(Thermal Resistance)

t , 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

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Revision: 21-Jul-08 3

70CRU04PbF

Vishay High Power Products

180

170

160

150

140

130

Square wave (D = 0.50)

120

Rated Vr applied

110

see note (1)

Allowable Case Temperature (°C)

100

0 5 10 15 20 25 30 35 40

Average Forward Current - I

Fig. 5 - Maximum Allowable Case Temperature vs.

Average Forward Current

40

35

30

25

20

15

10

Average Power Loss ( Watts )

5

0

0 5 10 15 20 25 30 35

Average Forward Current - I

Fig. 6 - Forward Power Loss Characteristics

DC

RMS Limit

D = 0.01
D = 0.02
D = 0.05
D = 0.10
D = 0.20
D = 0.50
DC

F(AV)

Ultrafast Rectifier,

2 x 35 A FRED Pt

(A)

F(AV)

(A)

TM

150

140

130

120

110

100

trr ( ns )

90

80

70

60

50

100 1000

Fig. 7 - Typical Reverse Recovery Time vs. dI

2500

2000

1500

Qrr ( nC )

1000

500

0

100 1000

Fig. 8 - Typical Stored Charge vs. dI

If = 35A
Vrr = 200V

Tj = 125˚C

Tj = 25˚C

diF/dt (A/μs )

If = 35A
Vrr = 200V

Tj = 125˚C

Tj = 25˚C

diF/dt (A/μs )

/dt

F

/dt

F

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

F(AV)

) x R

REV

x VFM at (I

;

thJC

/D) (see fig. 6);

F(AV)

R

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Document Number: 94510

4 Revision: 21-Jul-08

70CRU04PbF

ORDERING INFORMATION TABLE

Device code

70 C R U 04 PbF

1 - Current rating (70 = 70 A)

2 - Common cathode

3 -TO-218

4 - Ultrafast recovery

5 - Voltage rating (04 = 400 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

Vishay High Power Products

6

LINKS TO RELATED DOCUMENTS

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

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

Document Number: 94510 For technical questions, contact: [e-mail]
Revision: 21-Jul-08 5

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Legal Disclaimer Notice

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
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from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
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Product names and markings noted herein may be trademarks of their respective owners.

Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1