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

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

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

Document Number: 94212 For technical questions, contact: [e-mail]

www.vishay.com

Revision: 13-Aug-08 3