Vishay 40CTQ045PBF Data Sheet

TO-220AB

Schottky Rectifier, 2 x 20 A

FEATURES

• 150 °C TJ operation

Anode

Base

common

cathode

Common

1 3

cathode

2

Anode

2

• Center tap configuration

• Very 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

• Lead (Pb)-free (“PbF” suffix)

• Designed and qualified for industrial level

40CTQ045PbF

Vishay High Power Products

Pb-free

Available

RoHS*

COMPLIANT

PRODUCT SUMMARY

I

F(AV)

V

R

2 x 20 A

45 V

This center tap Schottky rectifier has been optimized for very
low forward voltage drop, with moderate leakage. The
proprietary barrier technology allows for reliable operation up
to 150 °C junction temperature. Typical applications are in
switching power supplies, converters, freewheeling diodes,
and reverse battery protection.

MAJOR RATINGS AND CHARACTERISTICS

DESCRIPTION

SYMBOL CHARACTERISTICS VALUES UNITS

I

F(AV)

V

RRM

I

FSM

V

F

T

J

Rectangular waveform 40 A

45 V

tp = 5 µs sine 1240 A

20 Apk, TJ = 125 °C (per leg) 0.48 V

Range - 55 to 150 °C

VOLTAGE RATINGS

PARAMETER SYMBOL 40CTQ045PbF UNITS

Maximum DC reverse voltage V

Maximum working peak reverse voltage V

R

RWM

45 V

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

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

Document Number: 94212 For technical questions, contact: [e-mail]
Revision: 13-Aug-08 1

per leg

per device 40

I

F(AV)

I

FSM

AR

50 % duty cycle at TC = 116 °C, rectangular waveform

5 µs sine or 3 µs rect. pulse

10 ms sine or 6 ms rect. pulse 350

TJ = 25 °C, IAS = 3 A, L = 4.4 mH 20 mJ

AS

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

maximum VA = 1.5 x VR typical

J

Following any rated load
condition and with rated
V

applied

RRM

20

1240

3A

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A

40CTQ045PbF

Vishay High Power Products

Schottky Rectifier, 2 x 20 A

ELECTRICAL SPECIFICATIONS

PARAMETER SYMBOL TEST CONDITIONS VALUES UNITS

20 A

Maximum forward voltage drop per leg
See fig. 1

V

FM

40 A 0.68

(1)

20 A

40 A 0.67

Maximum reverse leakage current per leg
See fig. 2

I

RM

Threshold voltage V

Forward slope resistance r

Maximum junction capacitance per leg C

Typical series inductance per leg L

F(TO)

TJ = 25 °C

(1)

T

= 125 °C 115

J

TJ = TJ maximum

t

VR = 5 VDC (test signal range 100 kHz to 1 MHz) 25 °C 2800 pF

T

Measured lead to lead 5 mm from package body 8.0 nH

S

Maximum voltage rate of change dV/dt Rated V

T

= 25 °C

J

= 125 °C

T

J

V

= Rated V

R

R

R

0.53

0.48

3

0.27 V

8.72 mΩ

10 000 V/µs

Note

(1)

Pulse width < 300 µs, duty cycle < 2 %

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

Approximate weight

Mounting torque

minimum 6 (5)

maximum 12 (10)

Marking device Case style TO-220AB 40CTQ045

T

, T

J

Stg

R

DC operation

thJC

R

thCS

- 55 to 150 °C

2.0

1.0

Mounting surface, smooth and greased 0.50

2g

0.07 oz.

kgf · cm

(lbf · in)

V

mA

°C/W

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Document Number: 94212

2 Revision: 13-Aug-08

40CTQ045PbF

Schottky Rectifier, 2 x 20 A

1000

100

TJ = 150 °C

= 125 °C

T

10

1

- Instantaneous Forward Current (A)

F

I

0.40 0.2 0.6 1.0 1.4 1.6

VFM - Forward Voltage Drop (V)

Fig. 1 - Maximum Forward Voltage Drop Characteristics

(Per Leg)

T

1.2

10 000

J

= 25 °C

J

Vishay High Power Products

1000

TJ = 150 °C

100

10

1

0.1

- Reverse Current (mA)

R

I

0.01

0.001

1.80.8

0

Fig. 2 - Typical Values of Reverse Current vs.

TJ = 125 °C

TJ = 100 °C

TJ = 75 °C

TJ = 50 °C

TJ = 25 °C

10

20 30 35 4525

VR - Reverse Voltage (V)

Reverse Voltage (Per Leg)

04515

1000

- Junction Capacitance (pF)

T

C

100

10 40

03050

VR - Reverse Voltage (V)

Fig. 3 - Typical Junction Capacitance vs.

Reverse Voltage (Per Leg)

10

1

0.1

- Thermal Impedance (°C/W)

thJC

Z

0.01

0.00001 0.0001 0.001 0.01 0.1

Single pulse

(thermal resistance)

t1 - Rectangular Pulse Duration (s)

Fig. 4 - Maximum Thermal Impedance Z

TJ = 25 °C

20

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

Notes:

1. Duty factor D = t

2. Peak TJ = PDM x Z

1

Characteristics (Per Leg)

thJC

P

DM

t

1

t

2

.

1/t2

+ T

thJC

C

10

100

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Revision: 13-Aug-08 3

40CTQ045PbF

Vishay High Power Products

150

145

140

135

130

125

Square wave (D = 0.50)

120

80 % rated V

115

110

See note (1)

105

Allowable Case Temperature (°C)

100

030

I

F(AV)

applied

R

- Average Forward Current (A)

Fig. 5 - Maximum Allowable Case Temperature vs.

Average Forward Current (Per Leg)

DC

2015105

10 000

Schottky Rectifier, 2 x 20 A

18

16

14

12

10

Average Power Loss (W)

25

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

At any rated load condition
and with rated V
following surge

RRM

applied

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

8

6

4

2

0

5101520

025

I

- Average Forward Current (A)

F(AV)

DC

RMS limit

30

1000

- Non-Repetitive Surge Current (A)

100

I

FSM

100 1000

tp - Square Wave Pulse Duration (µs)

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

L

High-speed

switch

Freewheel

diode

40HFL40S02

Current
monitor

D.U.T.

IRFP460

R

= 25 Ω

g

Fig. 8 - Unclamped Inductive Test Circuit

10 00010

V

= 25 V

d

+

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 = 10 V

REV

F(AV)

) x R

REV

x VFM at (I

thJC

;

F(AV)

/D) (see fig. 6);

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Document Number: 94212

4 Revision: 13-Aug-08

40CTQ045PbF

Schottky Rectifier, 2 x 20 A

ORDERING INFORMATION TABLE

Device code

40 C T Q 045 PbF

1 - Current rating (40 = 40 A)

2 - Circuit configuration:

3 - Package:

4 - Schottky “Q” series

5 - Voltage rating (045 = 45 V)

6 - None = Standard production

Tube standard pack quantity: 50 pieces

C = Common cathode

T = TO-220

PbF = Lead (Pb)-free

51324

Vishay High Power Products

6

LINKS TO RELATED DOCUMENTS

Dimensions http://www.vishay.com/doc?95222

Part marking information http://www.vishay.com/doc?95225

Document Number: 94212 For technical questions, contact: [e-mail]
Revision: 13-Aug-08 5

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DIMENSIONS in millimeters and inches

13

2

D

D1

H1

Q

13

2

C

C

D

D

3 x b23 x b

(b, b2)

b1, b3

(H1)

D2

Detail B

C

A

B

L

e1

Lead tip

E

E2

Ø P

0.014 AB

M M

0.015 AB

MM

Seating

plane

c

A2

A1

A

A

A

Lead assignments

Diodes

1. - Anode/open

2. - Cathode

3. - Anode

Conforms to JEDEC outline TO-220AB

(6)

(6)

(7)

(6)

(7)

e

2 x

L1

(2)

Detail B

Section C - C and D - D

View A - A

Base metal Plating

(4)

(4)

c1

c

(6)

Thermal pad

(E)

E1

(6)

Outline Dimensions

Vishay Semiconductors

TO-220AB

SYMBOL

A 4.25 4.65 0.167 0.183 E 10.11 10.51 0.398 0.414 3, 6
A1 1.14 1.40 0.045 0.055 E1 6.86 8.89 0.270 0.350 6
A2 2.56 2.92 0.101 0.115 E2 - 0.76 - 0.030 7

b 0.69 1.01 0.027 0.040 e 2.41 2.67 0.095 0.105
b1 0.38 0.97 0.015 0.038 4 e1 4.88 5.28 0.192 0.208
b2 1.20 1.73 0.047 0.068 H1 6.09 6.48 0.240 0.255 6, 7
b3 1.14 1.73 0.045 0.068 4 L 13.52 14.02 0.532 0.552

MILLIMETERS INCHES
MIN. MAX. MIN. MAX. MIN. MAX. MIN. MAX.

c 0.36 0.61 0.014 0.024 L1 3.32 3.82 0.131 0.150 2
c1 0.36 0.56 0.014 0.022 4 Ø P 3.54 3.73 0.139 0.147

D 14.85 15.25 0.585 0.600 3 Q 2.60 3.00 0.102 0.118
D1 8.38 9.02 0.330 0.355  90° to 93° 90° to 93°
D2 11.68 12.88 0.460 0.507 6

Notes

(1)

Dimensioning and tolerancing as per ASME Y14.5M-1994

(2)

Lead dimension and finish uncontrolled in L1

(3)

Dimension D, D1 and E do not include mold flash. Mold flash
shall not exceed 0.127 mm (0.005") per side. These dimensions
are measured at the outermost extremes of the plastic body

(4)

Dimension b1, b3 and c1 apply to base metal only

(5)

Controlling dimensions: inches

(6)

Thermal pad contour optional within dimensions E, H1, D2 and
E1

Document Number: 95222 For technical questions within your region, please contact one of the following: www.vishay.com
Revision: 08-Mar-11 [e-mail]

NOTES SYMBOL

, [e-mail], [e-mail] 1

(7)

(8)

Dimensions E2 x H1 define a zone where stamping and
singulation irregularities are allowed
Outline conforms to JEDEC TO-220, except A2 (maximum) and
D2 (minimum) where dimensions are derived from the actual
package outline

MILLIMETERS INCHES

NOTES

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