C&H Technology 81CNQA User Manual

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81CNQ...A Series

Vishay High Power Products

Schottky Rectifier

New Generation 3 D-61 Package, 2 x 40 A

81CNQ...A

81CNQ...ASM

D-61-8-SM

81CNQ...ASL

D-61-8-SL

D-61-8

12

Anode

1

12

Anode

1

1

Anode

1

Base

common

cathode

Common

cathode

Common

cathode

Base

common

cathode

3

Anode

2

3

Anode

2

3

Anode

2

FEATURES

• 175 °C TJ operation

• Center tap module

• Low forward voltage drop

• High frequency operation

• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance

• Guard ring for enhanced ruggedness and long term
reliability

• New fully transfer-mold low profile, small footprint, high
current package

• Designed and qualified for industrial level

DESCRIPTION

The 81CNQ...A center tap Schottky rectifier module series
has been optimized for low reverse leakage at high
temperature. The proprietary barrier technology allows for
reliable operation up to 175 °C junction temperature. Typical
applications are in switching power supplies, converters,
freewheeling diodes, and reverse battery protection.

PRODUCT SUMMARY

I

F(AV)

V

R

2 x 40 A

35 to 45 V

MAJOR RATINGS AND CHARACTERISTICS

SYMBOL CHARACTERISTICS VALUES UNITS

I

F(AV)

V

RRM

I

FSM

V

F

T

J

Rectangular waveform 80 A

35 to 45 V

tp = 5 µs sine 4600 A

40 Apk, TJ = 125 °C (per leg) 0.54 V

Range - 55 to 175 °C

VOLTAGE RATINGS

PARAMETER SYMBOL 81CNQ035A 81CNQ040A 81CNQ045A UNITS

Maximum DC reverse voltage V

Maximum working peak reverse voltage V

R

RWM

35 40 45 V

Document Number: 93400 For technical questions, contact: [e-mail]
Revision: 19-Aug-08 1

www.vishay.com

81CNQ...A Series

Vishay High Power Products

Schottky Rectifier

New Generation 3

D-61 Package, 2 x 40 A

ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum average forward current
See fig. 5

Maximum peak one cycle
non-repetitive surge current per leg
See fig. 7

Non-repetitive avalanche energy per leg E

Repetitive avalanche current per leg I

ELECTRICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum forward
voltage drop per leg
See fig. 1

Maximum reverse
leakage current per leg
See fig. 2

Maximum junction capacitance per leg C

Typical series inductance per leg L

Maximum voltage rate of change dV/dt Rated V

Note

(1)

Pulse width < 300 µs, duty cycle < 2 %

V

I

I

F(AV)

I

FSM

AR

FM

RM

AS

S

50 % duty cycle at TC = 141 °C, rectangular waveform 80

5 µs sine or 3 µs rect. pulse

Following any rated

4600

load condition and with

10 ms sine or 6 ms rect. pulse 790

rated V

RRM

applied

TJ = 25 °C, IAS = 8 A, L = 1.7 mH 54 mJ

Current decaying linearly to zero in 1 µs
Frequency limited by T

40 A

80 A 0.74

(1)

40 A

80 A 0.66

TJ = 25 °C

(1)

T

= 125 °C 45

T

J

VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 2600 pF

maximum VA = 1.5 x VR typical

J

T

= 25 °C

J

= 125 °C

T

J

= Rated V

V

R

R

8A

0.60

0.54

5

Measured lead to lead 5 mm from package body 5.5 nH

R

10 000 V/µs

A

V

mA

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

Document Number: 93400

2 Revision: 19-Aug-08

81CNQ...A Series

Schottky Rectifier

Vishay High Power Products

New Generation 3

D-61 Package, 2 x 40 A

THERMAL - MECHANICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

Maximum junction and storage
temperature range

Maximum thermal resistance,
junction to case per leg

Maximum thermal resistance,
junction to case per package

Typical thermal resistance,
case to heatsink (D-61-8 only)

Approximate weight

Mounting torque
(D-61-8 only)

Marking device

minimum 40 (35)

maximum 58 (50)

, T

T

J

Stg

DC operation

R

thJC

R

thCS

See fig. 4

DC operation 0.42

Mounting surface, smooth and greased
Device flatness < 5 mils

Case style D-61-8

Case style D-61-8-SM

Case style D-61-8-SL

- 55 to 175 °C

0.85

°C/W

0.30

7.8 g

0.28 oz.

kgf · cm

(lbf · in)

81CNQ035A

81CNQ040A

81CNQ045A

81CNQ035ASM

81CNQ040ASM

81CNQ045ASM

81CNQ035ASL

81CNQ040ASL

81CNQ045ASL

Document Number: 93400 For technical questions, contact: [e-mail]
Revision: 19-Aug-08 3

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81CNQ...A Series

Vishay High Power Products

1000

100

(A)

F

10

T = 175°C

J

T = 125°C

J

Instantaneous Forward Current - I

1

T = 25°C

J

Schottky Rectifier

New Generation 3

D-61 Package, 2 x 40 A

(mA)

Reverse Current - I

(p F)

1000

100

R

0.01

0.001

Tj = 175°C

150°C

10

1

0.1

125°C

100°C

75°C

50°C

25°C

0 5 10 15 20 25 30 35 40 45

Reverse Voltage - VR (V)

Fig. 2 - Typical Values of Reverse Current vs.

Reverse Voltage (Per Leg)

10000

T

T = 25°C

J

0.1
0 0.2 0.4 0.6 0.8 1

Forward Voltage Drop - VFM (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Leg)

1

D = 0.50

(°C/W)

thJC

Thermal Impedance Z

0.01

D = 0.33

D = 0.25

D = 0.17

D = 0.08

0.1

Single Pulse

(Thermal Resistance)

0.00001 0.0001 0.001 0.01 0.1 1 10 100

t1 , Rectangular Pulse Duration (Seconds)

1000

Junction Capacitance - C

100

0 1020304050

Reverse Voltage - VR (V)

Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage

(Per Leg)

P

DM

t

1

t

Notes:

1. Duty factor D = t1/ t2

2. Peak Tj = Pdm x ZthJC + Tc

2

Fig. 4 - Maximum Thermal Impedance Z

Characteristics (Per Leg)

thJC

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

Document Number: 93400

4 Revision: 19-Aug-08

81CNQ...A Series

Schottky Rectifier

New Generation 3

D-61 Package, 2 x 40 A

180

170

160

150

Allowable Case Temperature (°C)

140

Fig. 5 - Maximum Allowable Case Temperature vs.

RthJC (DC) = 0.85 °C/W

DC

0 102030405060

Average Forward Current - I

F(AV)

(A)

Average Forward Current (Per Leg)

10000

(A)

FSM

Vishay High Power Products

32

D = 0.08
D = 0.17

28

D = 0.25

24

D = 0.33
D = 0.50

20

RMS Limit

16

12

8

Average Power Loss (Watts)

4

0

0 102030405060

Average Forward Current - I

Fig. 6 - Forward Power Loss Characteristics (Per Leg)

DC

F(AV)

(A)

Current
monitor

1000

At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge

Non-Repetitive Surge Current - I

100

10 100 1000 10000

Square Wave Pulse Duration - tp (microsec)

Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)

L

High-speed

switch

Freewheel

diode

40HFL40S02

D.U.T.

IRFP460

= 25 Ω

R

g

Fig. 8 - Unclamped Inductive Test Circuit

V

= 25 V

d

+

Document Number: 93400 For technical questions, contact: [e-mail]

www.vishay.com

Revision: 19-Aug-08 5

81CNQ...A Series

Vishay High Power Products

ORDERING INFORMATION TABLE

Device code

81 C N Q 045 A -

1 - Current rating (80 A)

- Circuit configuration:

2

C = Common cathode

- Package:

3

N = D-61

- Schottky “Q” series

4

5 - Voltage ratings

6

-

- Package style:

A = D-61-8

ASM = D-61-8-SM

ASL = D-61-8-SL

-

7

PbF = Lead (Pb)-free (D-61-8 only)

Schottky Rectifier

New Generation 3

D-61 Package, 2 x 40 A

51324

None = Standard production

67

035 = 35 V
040 = 40 V
045 = 45 V

Standard pack quantity: A = 10 pieces; ASM/ASL = 20 pieces

LINKS TO RELATED DOCUMENTS

Dimensions http://www.vishay.com/doc?95354

Part marking information http://www.vishay.com/doc?95356

www.vishay.com For technical questions, contact: [e-mail]
6 Revision: 19-Aug-08

Document Number: 93400

D-61-8, D-61-8-SM, D-61-8-SL

DIMENSIONS FOR D-61-8 in millimeters (inches)

30.15 (1.187)

29.90 (1.177)

123

Outline Dimensions

Vishay High Power Products

Ø 4.17 (0.164)
Ø 3.91 (0.154)

(2 x)

8.89 (0.350)

8.73 (0.344)

11.05 (0.435) REF.

5.20 (0.205)

4.95 (0.195)

(2 x)

R 0.0200

1.40 (0.055)

1.14 (0.045)

1.98 (0.078)

1.72 (0.068)

10.28 (0.405)

10.03 (0.395)

37.97 (1.495)

37.72 (1.485)

0.89 (0.035)

0.73 (0.029)

5°

(2 x)

5°

(2 x)

1.04 (0.041)

0.84 (0.033)

3.30 (0.130)

3.04 (0.120)

16.2 (0.640) REF.

14° MIN.

14° MIN.

5.97 (0.235)

5.71 (0.225)

10.79 (0.425) MAX.

Document Number: 95354 For technical questions concerning discrete products, contact: [e-mail]
Revision: 13-Aug-08 For technical questions concerning module products, contact: [e-mail]

www.vishay.com

1

Outline Dimensions

Vishay High Power Products

D-61-8, D-61-8-SM,

D-61-8-SL

DIMENSIONS FOR D-61-8-SM in millimeters (inches)

19.93 (0.785)

19.68 (0.775)

8.89 (0.350)

8.73 (0.344)

0.89 (0.035)

0.73 (0.029)

5.20 (0.205)

4.95 (0.195)

11.05 (0.435) REF.

1.98 (0.078)

1.72 (0.068)

10.28 (0.405)

10.03 (0.395)

1.04 (0.041)

0.84 (0.033)

14° MIN.

14° MIN.

1.40 (0.055)

1.14 (0.045)

5.97 (0.235)

5.71 (0.225)

3.30 (0.130)

3.04 (0.120)

10.79 (0.425) MAX.

www.vishay.com For technical questions concerning discrete products, contact: [e-mail]
2 For technical questions concerning module products, contact: [e-mail]

Document Number: 95354

Revision: 13-Aug-08

Outline Dimensions

D-61-8, D-61-8-SM,

D-61-8-SL

DIMENSIONS FOR D 61-8-SL in millimeters (inches)

19.93 (0.785)

19.68 (0.775)

0.89 (0.035)

0.73 (0.029)

5.59 (0.220)

5.08 (0.200)

5.20 (0.205)

4.95 (0.195)

2.67 (0.105)

2.16 (0.085)

1.98 (0.078)

1.72 (0.068)

R0 0.508

(R 0.02)

3.30 (0.130)

3.05 (0.120)

8.89 (0.350)

8.73 (0.344)

R 0.51 (0.020)

R 0.76 (0.030)

1.04 (0.041)

0.84 (0.033)

5.33 (0.210)

3.97 (0.156)

3.68 (0.145)

2.41 (0.095)

2.16 (0.085)

Vishay High Power Products

14° MIN. 14° MIN.

5°

DETAIL “A”

5.97 (0.235)

5.71 (0.225)

3.30 (0.130)

3.05 (0.120)

10.79 (0.425) MAX.

1.40 (0.055)

1.14 (0.045)

8.89 (0.350)

8.73 (0.344)

3.97 (0.156)

3.68 (0.145)

5.59 (0.220)

5.08 (0.200)

10.16 (0.400) REF.

19.93 (0.785)

19.68 (0.775)

16.13 (0.635)

15.88 (0.625)

14.22 (0.560)

13.71 (0.540)

0.89 (0.035)

0.73 (0.029)

0.89 (0.035)

0.73 (0.029)

0.64 (0.025) REF.
(2 x)

1.98 (0.078)

1.72 (0.068)

(2 x)

(2 x)

Document Number: 95354 For technical questions concerning discrete products, contact: [e-mail]
Revision: 13-Aug-08 For technical questions concerning module products, contact: [e-mail]

www.vishay.com

3

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
otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such
applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting
from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding
products designed for such applications.

Product names and markings noted herein may be trademarks of their respective owners.

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