MBR745 - International Rectifier

IF(AV) Rectangular 7.5 A

waveform

VRRM 35/ 45 V

IFSM @ tp = 5 µs sine 690 A

VF@ 7.5 Apk, TJ = 125°C 0.57 V

TJrange - 65 to 150 °C

SCHOTTKY RECTIFIER 7.5 Amp

MBR735/ MBR745

MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

Major Ratings and Characteristics

Characteristics Values Units

Description/ Features

The MBR7.. Schottky rectifier has been optimized for low

reverse leakage at high temperature. 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 TJ operation

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

Case Styles

MBR735/ MBR745

TO-220AC

MBRB735/ MBRB745

D2PAK

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Anode

Base

Cathode

athode

Anode

Base

Cathode

N/C

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

2www.irf.com

VRMax. DC Reverse Voltage (V) 35 45

VRWM Max. Working Peak Reverse Voltage (V)

Voltage Ratings

Parameters MBR.735 MBR.745

IF(AV) Max. Average Forward Current 7.5 A @ TC = 131 °C (Rated VR)

IFSM Non-Repetitive Peak Surge Current 690 A 5µs Sine or 3µs Rect. pulse

150 Surge applied at rated load condition halfwave single

phase 60Hz

EAS Non-Repetitive Avalanche Energy 7 mJ TJ = 25 °C, IAS = 2 Amps, L = 3.5 mH

IAR Repetitive Avalanche Current 2 A Current decaying linearly to zero in 1 µsec

Frequency limited by TJ max. VA = 1.5 x VR typical

Absolute Maximum Ratings

Parameters MBR.. Conditions

Following any rated load

condition and with rated

VRRM applied

VFM Max. Forward Voltage Drop(1) 0.84 V @ 15A TJ = 25 °C

0.57 V @ 7.5A TJ = 125 °C

0.72 V @ 15A

IRM Max. Instantaneus Reverse Current 0.1 mA TJ = 25 °C Rated DC voltage

(1) 15 mA TJ = 125 °C

CTMax. Junction Capacitance 400 pF VR = 5VDC, (test signal range 100Khz to 1Mhz) 25°C

LSTypical Series Inductance 8.0 nH Measured from top of terminal to mounting plane

dv/dt Max. Voltage Rate of Change 1000 V/ µs

(Rated VR)

Electrical Specifications

Parameters MBR.. Conditions

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

Thermal-Mechanical Specifications

Parameters MBR.. Conditions

Kg-cm

(Ibf-in)

TJMax. Junction Temperature Range - 65 to 150 °C

Tstg Max. Storage Temperature Range - 65 to 175 °C

RthJC Max. Thermal Resistance Junction 3.0 °C/W DC operation

to Case

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

to Heatsink

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

T Mounting Torque Min. 6 (5)

Max. 12 (10

Units

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

www.irf.com

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 ZthJC Characteristics (Per Leg)

Fig. 1 - Max. Forward Voltage Drop Characteristics

(Per Leg)

Instantaneous Forward Current - I F (A)

Forward Voltage Drop - VFM (V)

100

0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2

T = 150˚C

T = 125˚C

T = 25˚C

Reverse Voltage - VR (V)

Reverse Current - I R (mA)

0.0001

0.001

0.01

0.1

100

0 5 10 15 20 25 30 35 40 45

125˚C

100˚C

75˚C

50˚C

25˚C

T = 150˚C

Reverse Voltage - VR (V)

Junction Capacitance - C T (p F)

100

1000

0 1020304050

T = 25˚C

t1 , Rectangular Pulse Duration (Seconds)

Thermal Impedance Z thJC (°C/W)

0.001

0.01

0.1

0.00001 0.0001 0.001 0.01 0.1 1 10

Single Pulse

(Thermal Resistance)

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

Notes:

1. Duty factor D = t1/ t2

2. Peak Tj = Pdm x ZthJC + Tc

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

4www.irf.com

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

Fig. 5 - Max. Allowable Case Temperature

Vs. Average Forward Current Fig. 6 - Forward Power Loss Characteristics

(2) Formula used: TC = TJ - (Pd + PdREV) x RthJC ;

Pd = Forward Power Loss = IF(AV) x VFM @ (IF(AV) / D) (see Fig. 6);

PdREV = Inverse Power Loss = VR1 x IR (1 - D); IR @ VR1 = rated VR

Average Forward Current - IF(AV) (A)

Allowable Case Temperature (°C)

Average Forward Current - IF(AV) (A)

Average Power Loss (Watts)

Square Wave Pulse Duration - tp (microsec)

Non-Repetitive Surge Current - I FSM (A)

100

1000

10 100 1000 10000

At Any Rated Load Condition

And With Rated Vrrm Applied

Following Surge

120

130

140

150

024681012

see note (2)

Square Wave (D = 0.50)

Rated Vr Applied

0 2 4 6 8 10 12

RMS Limit

D = 0.75

D = 0.50

D = 0.33

D = 0.25

D = 0.20

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

www.irf.com

Outline Table

Conform to JEDEC outline TO-220AC

Dimensions in millimeters and (inches)

Conform to JEDEC outline D2Pak (SMD-220)

Dimensions in millimeters and (inches)

3.78 (0.15)

3.54 (0.14)

10.54 (0.41)

MAX. DIA.

15.24 (0.60)

14.84 (0.58)

2.92 (0.11)

2.54 (0.10)

1TERM 2

14.09 (0.55)

13.47 (0.53) 3.96 (0.16)

3.55 (0.14)

0.94 (0.04)

0.69 (0.03)

4.57 (0.18)

4.32 (0.17)

30.61 (0.02) MAX.

5.08 (0.20) REF.

1.32 (0.05)

1.22 (0.05)

6.48 (0.25)

6.23 (0.24)

2°

0.10 (0.004)

1.40 (0.05)

1.15 (0.04) 2.89 (0.11)

2.64 (0.10)

2.04 (0.080) MAX.

10.16 (0.40)

REF.

8.89 (0.35)

4.57 (0.18)

4.32 (0.17)

0.61 (0.02) MAX .

5.08 (0.20) REF.

1.32 (0.05)

1.2 2 (0 .0 5)

6.47 (0.25)

6.18 (0.24)

93°

REF.

2.61 (0.10)

2.32 (0.09)

5.28 (0.21)

4.78 (0.19)

4.6 9 (0 .1 8)

4.20 (0.16)

0.55 (0.02)

0.46 (0.02)

14.73 (0.58)

15.49 (0.61)

1.40 (0.055)

1.14 (0.045)

0.93 (0.37)

0.69 (0.27)

2X 11.43 (0.45)

17.78 (0.70)

8.89 (0.35)

3.81 (0.15)

2.08 (0.08)

2.54 (0.10)

MINIMUM RECOMMENDED FOOTPRINT

Anode

Base

Cathode

Anode

Base

Cathode

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

6www.irf.com

Ordering Information Table

Device Code

1 2 3

1- Essential Part Number

2- Package Style: none = TO-220

B= D

2 Pak

3- Current Rating

4- Voltage Rating 35 = 35V

45 = 45V

MBR B 7 45

TRR

FEED D IRECT ION

TRL

FEED DIRECTION

10.90 (0.429)

10.70 (0.421) 16.10 (0.634)

15.90 (0.626)

1.75 (0.069)

1.25 (0.049)

1.85 (0.073)

1.65 (0.065)

4.10 (0.161)

3.90 (0.153)

1.60 (0.063)

1.50 (0.059)

DIA.

1.60 (0.063)

1.50 (0.059)

DIA.

11.60 (0.457)

11.40 (0.449)

15.42 (0.609)

15.22 (0.601)

4.72 (0.186)

4.52 (0.178)

24.30 (0.957)

23.90 (0.941)

0.368 (0.0145)

0.342 (0.0135)

360 (14.173)

DIA. MAX.

26.40 (1.039)

24.40 (0.961)

13.50 (0.532)

12.80 (0.504)DIA.

60 (2.362)

DIA. MIN.

SMD-220 Tape & Reel

When ordering, indicate t he part

number, part orient ation, and the

quantity. Q uantities are in multiples

of 800 pieces per reel for both

TRL and TRR.

Dimensions in millimeters and (inches)

Tape & Reel Information

MBR735/ MBR745, MBRB735/ MBRB745

Bulletin PD-2.325 rev. E 01/03

www.irf.com

MBR745

********************************************

* This model has been developed by *

* Wizard SPICE MODEL GENERATOR (1999) *

* (International Rectifier Corporation) *

* contains Proprietary Information *

********************************************

* SPICE Model Diode is composed by a *

* simple diode plus paralled VCG2T *

********************************************

.SUBCKT MBR745 ANO CAT

D1 ANO 1 DMOD (0.03191)

*Define diode model

.MODEL DMOD D(IS=9.72464638473799E-05A,N=1.30648926537753,BV=52V,

+ IBV=0.195508065728349A,RS= 0.000727548,CJO=1.94829876431799E-08,

+ VJ=2.27282978121533,XTI=2, EG=0.854458710837653)

********************************************

*Implementation of VCG2T

VX 1 2 DC 0V

R1 2 CAT TRES 1E-6

.MODEL TRES RES(R=1,TC1=27.6281424524011)

GP1 ANO CAT VALUE={-ABS(I(VX))*(EXP((((-5.219758E-03/27.62814)*((V(2,CAT)*1E6)/(I(VX)+1E-6)-

1))+1)*7.000165E-02*ABS(V(ANO,CAT)))-1)}

********************************************

.ENDS MBR745

Thermal Model Subcircuit

.SUBCKT MBR745 5 1

CTHERM1 5 4 1.05E+00

CTHERM2 4 3 4.44E+00

CTHERM3 3 2 1.16E+01

CTHERM4 2 1 6.12E+01

RTHERM1 5 4 1.33E+00

RTHERM2 4 3 1.19E+00

RTHERM1 3 2 3.81E-01

RTHERM1 2 1 9.54E-02

.ENDS MBR745

IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245, USA Tel: (310) 252-7105

TAC Fax: (310) 252-7309

Visit us at www.irf.com for sales contact information. 01/03

Data and specifications subject to change without notice.

This product has been designed and qualified for Industrial Level.

Qualification Standards can be found on IR's Web site.