Bulletin PD-20051 rev. A 09/01
MBR4045CT
MBRB4045CT
MBR4045CT-1
SCHOTTKY RECTIFIER
40 Amp
Major Ratings and Characteristics
Characteristics
I
F(AV)
Rectangular waveform
(Per Device)
I
FRM
@ T
C
= 118°C
(Per Leg)
V
RRM
I
FSM
@ tp = 5 µs sine
V
F
T
J
@ 20 Apk, T
J
= 125°C
range
40
45
900
0.58
- 65 to 150
A
V
A
V
°C
Description/Features
Units
A
This center tap 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 bat-
tery protection.
150° C T
J
operation
Center tap TO-220, D
2
Pak and TO-262 packages
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
Values
40
Case Styles
MBR4045CT
MBRB4045CT
MBR4045CT-1
Base
Common
Cathode
2
Base
Common
Cathode
2
Base
Common
Cathode
2
1
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
1
Anode
Anode
2
Common
Cathode
3
Anode
TO-220AB
D
2
PAK
TO-262
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1
MBR4045CT, MBRB4045CT, MBR4045CT-1
PreBulletin PD-20051 rev. A 09/01
Voltage Ratings
Parameters
V
R
Max. DC Reverse Voltage (V)
V
RWM
Max. Working Peak Reverse Voltage (V)
MBR4045CT
MBRB4045CT
MBR4045CT-1
45
Absolute Maximum Ratings
Parameters
I
F(AV)
Max. Average Forward (Per Leg)
Current
(Per Device)
I
FRM
Peak Repetitive Forward
Current
(Per Leg)
I
FSM
E
AS
I
AR
Max.Peak One Cycle Non -Repetitive
Surge Current
(Per Leg)
Non -Repetitive Avalanche Energy
(Per Leg)
Repetitive Avalanche Current
(Per Leg)
Values
20
40
40
900
210
20
3
Units Conditions
A
A
A
A
A
@ T
C
= 118° C, (Rated V
R
)
Rated V
R
, square wave, 20kHz
T
C
= 118° C
Following any rated load
5µs Sine or 3µs Rect. pulse
condition and with rated
10ms Sine or 6ms Rect. pulse
V
RRM
applied
T
J
= 25°C, I
AS
= 3Amps, L = 4.40mH
Current decaying linearty to zero in 1 µsec
Frequency limited by T
J
max. V
A
= 1.5 x V
R
typical
Electrical Specifications
Parameters
V
FM
Max. Forward Voltage Drop
(1)
I
RM
Max. Instantaneus Reverse Current
(1)
C
T
L
S
Max. Junction Capacitance
Typical Series Inductance
(Rated V
R
)
Values
0.60
0.78
0.58
0.75
1
50
95
900
8.0
10,000
Units Conditions
V
V
V
V
mA
mA
mA
pF
nH
V/ µs
(1) Pulse Width < 300µs, Duty Cycle <2%
@ 20A
@ 40A
@ 20A
@ 40A
T
J
= 25 °C
T
J
= 100 °C
T
J
= 125 °C
T
J
= 25 °C
T
J
= 125 °C
Rated DC voltage
V
R
= 5V
DC
, (test signal range 100Khz to 1Mhz) 25°C
Measured from top of terminal to mounting plane
dv/dt Max. Voltage Rate of Change
Thermal-Mechanical Specifications
Parameters
T
J
T
stg
Max. Junction Temperature Range
Max. Storage Temperature Range
Values
-65 to 150
-65 to 175
1.5
0.50
50
2 (0.07)
Min.
Max.
6 (5)
12 (10)
Units Conditions
°C
°C
°C/W
°C/W
°C/W
g (oz.)
Kg-cm Non-lubricated threads
(Ibf-in)
DC operation
Mounting surface, smooth and greased
Only for TO-220
DC operation
For D
2
Pak and TO-262
R
thJC
Max. Thermal Resistance
Junction to Case
(Per Leg)
R
thCS
Typical Thermal Resistance
Case to Heatsink
R
thJA
Max. Thermal Resistance
Junction to Ambient
wt
T
Approximate Weight
Mounting Torque
2
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MBR4045CT, MBRB4045CT, MBR4045CT-1
Bulletin PD-20051 rev. A 09/01
1000
1000
Reverse Current - I
R
(mA)
100
10
1
0.1
T = 150˚C
J
125˚C
100˚C
75˚C
50˚C
25˚C
Instantaneous Forward Current - I
F
(A)
100
0.01
0.001
0
5
10 15 20 25 30 35 40 45
Reverse Voltage - V
R
(V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
T = 150˚C
J
J
J
T = 125˚C
900
Junction Capacitance - C
T
(p F)
T = 25˚C
10
800
700
600
500
400
300
200
0
10
20
30
T
J
= 25˚C
1
0
0.2 0.4 0.6 0.8
1
1.2 1.4 1.6 1.8
2
Forward Voltage Drop - V
FM
(V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
40
50
Reverse Voltage - V
R
(V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
10
(°C/W)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
1
Thermal Impedance Z
thJC
P
DM
0.1
Single Pulse
(Thermal Resistance)
t1
t2
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
0.01
0.001
0.00001
0.0001
0.001
0.01
0.1
1
10
t
1
, Rectangular Pulse Duration (Seconds)
Fig. 4 - Max. Thermal Impedance Z
thJC
Characteristics (Per Leg)
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MBR4045CT, MBRB4045CT, MBR4045CT-1
PreBulletin PD-20051 rev. A 09/01
160
Allowable Case Temperature (°C)
Average Power Loss (Watts)
20
18
16
14
12
140
DC
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
120
Square Wave (D = 0.50)
Rated Vr Applied
10
RMS Limit
8
6
4
2
0
DC
100
see note (2)
80
0
5
10
15
20
25
30
Average Forward Current - I
F(AV)
(A)
Fig. 5 - Max. Allowable Case Temperature
Vs. Average Forward Current
0
5
10
15
20
25
30
35
Average Forward Current - I
F(AV)
(A)
Fig. 6 - Forward Power Loss Characteristics
Non-Repetitive Surge Current - I
FSM
(A)
1000
At Any Rated Load Condition
And With Rated Vrrm Applied
Following Surge
100
10
100
1000
10000
Square Wave Pulse Duration - t
p
(microsec)
Fig. 7 - Max. Non-Repetitive Surge Current (Per Leg)
(2)
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward Power Loss = I
F(AV)
x V
FM
@ (I
F(AV)
/
D) (see Fig. 6);
Pd
REV
= Inverse Power Loss = V
R1
x I
R
(1 - D); I
R
@ V
R1
= rated V
R
4
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MBR4045CT, MBRB4045CT, MBR4045CT-1
Bulletin PD-20051 rev. A 09/01
Outline Table
10.54 (0.41)
MAX.
3.78 (0.15)
3.54 (0.14)
15.24 (0.60)
14.84 (0.58)
1 2 3
14.09 (0.55)
13.47 (0.53)
3.96 (0.16)
3.55 (0.14)
2.04 (0.080) MAX.
1.40 (0.05)
1.15 (0.04)
0.94 (0.04)
0.69 (0.03)
1
2
Common
Cathode
3
1.32 (0.05)
DIA.
6.48 (0.25)
6.23 (0.24)
2°
1.22 (0.05)
2.92 (0.11)
2.54 (0.10)
TERM 2
0.10 (0.004)
Base
Common
Cathode
2.89 (0.11)
2.64 (0.10)
2
Anode
Anode
1 2 3
4.57 (0.18)
4.32 (0.17)
0.61 (0.02) MAX.
5.08 (0.20) REF.
Conform to JEDEC outline TO-220AB
Dimensions in millimeters and (inches)
10.16 (0.40)
REF.
4.69 (0.18)
4.20 (0.16)
1.32 (0.05)
6.47 (0.25)
15.49 (0.61)
1.22 (0.05)
93°
6.18 (0.24)
14.73 (0.58)
2.61 (0.10)
2.32 (0.09)
8.89 (0.35)
5.28 (0.21)
4.78 (0.19)
0.55 (0.02)
0.46 (0.02)
3X
Base
Common
Cathode
2
1.40 (0.055)
REF.
0.93 (0.37)
0.69 (0.27)
1.14 (0.045)
2X
MINIMUM RECOMMENDED FOOTPRINT
11.43 (0.45)
1
3
4.57 (0.18)
1
Anode
2
Common
Cathode
4.32 (0.17)
3
8.89 (0.35)
2
17.78 (0.70)
3.81 (0.15)
2.08 (0.08)
2X
Anode
0.61 (0.02) MAX.
5.08 (0.20) REF.
Conform to JEDEC outline D
2
Pak (SMD-220)
Dimensions in millimeters and (inches)
2.54 (0.10)
2X
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