Vishay 40CTQ045, 40CTQ045S, 40CTQ045-1 Data Sheet

SCHOTTKY RECTIFIER

40 Amp

Bulletin PD-20544 rev. C 12/01

1

www.irf.com

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, free-wheeling diodes,

and reverse battery protection.

150° C T

J

operation

Center tap configuration

Very low forward voltage drop

High purity, high temperature epoxy encapsulation for

enhanced mechanical strength and moisture resistance

High frequency operation

Guard ring for enhanced ruggedness and long term

reliability

Description/Features

Major Ratings and Characteristics

I

F(AV)

Rectangular 40 A

waveform

V

RRM

45 V

I

FSM

@ tp = 5 µs sine 1240 A

V

F

@

20 Apk, T

J

= 125°C 0.48 V

(per leg)

T

J

range - 55 to 15 0 °C

Characteristics Values Units

40CTQ045

40CTQ045S

40CTQ045-1

Case Styles

40CTQ... 40CTQ... S 40CTQ... -1

TO-220 D

2

PAK

Anode

1

3

2

Base

Common

Cathode

2

A

node

Common

Cathode

TO-262

Anode

1

3

2

Base

Common

Cathode

2

A

node

Common

Cathode

Anode

1

3

2

Base

Common

Cathode

2

A

node

Common

Cathode

40CTQ045, 40CTQ045S, 40CTQ045-1

2

Bulletin PD-20544 rev. C 12/01

www.irf.com

V

R

Max. DC Reverse Voltage (V)

V

RWM

Max. Working Peak Reverse Voltage (V)

Voltage Ratings

Absolute Maximum Ratings

Parameters Values Units Conditions

I

F(AV)

Max. Average Forward (Per Leg) 20 A 50% duty cycle @ T

C

= 116°C, rectangular wave form

Current * See Fig. 5 (Per Device) 40

I

FSM

Max. Peak One Cycle Non-Repetitive 1240 5µs Sine or 3µs Rect. pulse

Surge Current (Per Leg) * See Fig. 7 350 10ms Sine or 6ms Rect. pulse

E

AS

Non-Repetitive Avalanche Energy 20 mJ T

J

= 25 °C, I

AS

= 3 Amps, L = 4.40 mH

(Per Leg)

I

AR

Repetitive Avalanche Current 3 A Current decaying linearly to zero in 1 µsec

(Per Leg) Frequency limited by T

J

max. V

A

= 1.5 x V

R

typical

A

T

J

Max. Junction Temperature Range -55 to 150 °C

T

stg

Max. Storage Temperature Range -55 to 150 °C

R

thJC

Max. Thermal Resistance Junction 2.0 °C/W DC operation

to Case (Per Leg)

R

thJC

Max. Thermal Resistance Junction 1.0 °C/W DC operation

to Case (Per Package)

R

thCS

Typical Thermal Resistance, Case 0.50 °C/W Mounting surface , smooth and greased

to Heatsink (only for TO-220)

wt Approximate Weight 2 (0.07) g (oz.)

T Mounting Torque Min. 6 (5)

Max. 12 (10)

Thermal-Mechanical Specifications

Kg-cm

(Ibf-in)

Parameters Values Units Conditions

V

FM

Max. Forward Voltage Drop 0.53 V @ 20A

(Per Leg) * See Fig. 1 (1) 0.68 V @ 40A

0.48 V @ 20A

0.67 V @ 40A

I

RM

Max. Reverse Leakage Current 3 mA T

J

= 25 °C

(Per Leg) * See Fig. 2 (1) 115 mA T

J

= 125 °C

V

F(TO)

Threshold Voltage 0.27 V T

J

= T

J

max.

r

t

Forward Slope Resistance 8.72 m Ω

C

T

Max. Junction Capacitance (Per Leg) 2800 pF V

R

= 5V

DC

, (test signal range 100Khz to 1Mhz) 25°C

L

S

Typical Series Inductance (Per Leg) 8.0 nH Measured lead to lead 5mm from package body

dv/dt Max. Voltage Rate of Change 10000 V/ µs

(Rated V

R

)

T

J

= 25 °C

T

J

= 125 °C

Electrical Specifications

(1) Pulse Width < 300µs, Duty Cycle <2%

V

R

= rated V

R

Parameters Values Units Conditions

45

Parameters

40CTQ045

40CTQ045S

40CTQ045-1

Following any rated

load condition and with

rated V

RRM

applied

3

Bulletin PD-20544 rev. C 12/01

www.irf.com

40CTQ045, 40CTQ045S, 40CTQ045-1

Fig. 2 - Typical Values Of Reverse Current

Vs. Reverse Voltage (Per Leg)

Fig. 3 - Typical Junction Capacitance

Vs. Reverse Voltage (Per Leg)

Fig. 4 - Max. Thermal Impedance Z

thJC

Characteristics (Per Leg)

Fig. 1 - Max. Forward Voltage Drop Characteristics

(Per Leg)

1

10

100

1000

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8

Instan ta n eo us Forward Curren t - I (A)

T = 150 C

T = 125 C

T = 25 C

J

J

J

F

FM

Forward V oltage D ro p - V (V)

0.001

0.01

0.1

1

10

100

1000

0 5 10 15 20 25 30 35 40 45

R

R

125 C

100 C

75 C

50 C

25 C

Reverse Current - I (mA)

T = 150 C

J

Reverse Voltage - V (V)

100

1000

10000

01020304050

T = 25 C

J

R

T

Junc tion Capac itance - C (pF)

Reverse Voltage - V (V)

0.01

0.1

1

10

0.00001 0.0001 0.001 0.01 0.1 1 10 100

thJC

t , Rec tang ula r Pulse Duratio n (Seco nds)

Single Pulse

(Thermal Resistance)

1

Therm a l Impeda nce Z ( C /W)

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

Notes:

1. Duty factor D = t / t

2. Peak T = P x Z + T

1

2

C

thJC

DM

J

2

t

1

t

P

DM