MBRB4045CT/MBR4045CT-1
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
MBRB4045CT
MBR4045CT-1
FEATURES
• 150 °C T
J
operation
• Low forward voltage drop
• High frequency operation
• Center tap TO-220, D
2
PAK and TO-262 packages
Base
common
cathode
2
Base
common
cathode
2
• High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
• Guard ring for enhanced ruggedness and long term
reliability
• Designed and qualified for Q101 level
2
1 Common
3
Anode cathode Anode
2
1 Common
3
Anode cathode Anode
DESCRIPTION
The 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, freewheeling diodes, and reverse
battery protection.
D
2
PAK
TO-262
PRODUCT SUMMARY
I
F(AV)
V
R
I
RM
2 x 20 A
45 V
95 mA at 125 °C
MAJOR RATINGS AND CHARACTERISTICS
SYMBOL
I
F(AV)
I
FRM
V
RRM
I
FSM
V
F
T
J
t
p
= 5 µs sine
20 Apk, T
J
= 125 °C
Range
CHARACTERISTICS
Rectangular waveform (per device)
T
C
= 118 °C (per leg)
VALUES
40
40
45
900
0.58
- 65 to 150
UNITS
A
V
A
V
°C
VOLTAGE RATINGS
PARAMETER
Maximum DC reverse voltage
Maximum working peak reverse voltage
SYMBOL
V
R
V
RWM
MBRB4045CT
MBR4045CT-1
45
UNITS
V
ABSOLUTE MAXIMUM RATINGS
PARAMETER
Maximum average
forward current
per leg
per device
SYMBOL
I
F(AV)
I
FRM
I
FSM
10 ms sine or 6 ms rect. pulse
E
AS
I
AR
T
J
= 25 °C, I
AS
= 3 A, L = 4.4 mH
Current decaying linearly to zero in 1 µs
Frequency limited by T
J
maximum V
A
= 1.5 x V
R
typical
TEST CONDITIONS
T
C
= 118 °C, rated V
R
Rated V
R
, square wave, 20 kHz, T
C
= 118 °C
5 µs sine or 3 µs rect. pulse
Following any rated
load condition and with
rated V
RRM
applied
VALUES
20
40
40
900
210
20
3
mJ
A
A
UNITS
Peak repetitive forward current per leg
Maximum peak one cycle non-repetitive
peak surge current per leg
Non-repetitive avalanche energy per leg
Repetitive avalanche current per leg
Document Number: 93981
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
1
MBRB4045CT/MBR4045CT-1
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
ELECTRICAL SPECIFICATIONS
PARAMETER
SYMBOL
20 A
Maximum forward voltage drop
V
FM (1)
40 A
20 A
40 A
T
J
= 25 °C
Maximum instantaneous
reverse current
Maximum junction capacitance
Typical series inductance
Maximum voltage rate of change
Note
(1)
Pulse width < 300 µs, duty cycle < 2 %
I
RM (1)
T
J
= 100 °C
T
J
= 125 °C
C
T
L
S
dV/dt
V
R
= 5 V
DC
(test signal range 100 kHz to 1 MHz) 25 °C
Measured from top of terminal to mounting plane
Rated V
R
Rated DC voltage
TEST CONDITIONS
T
J
= 25 °C
VALUES
0.60
0.78
0.58
0.75
1
50
95
900
8.0
10 000
pF
nH
V/µs
mA
V
UNITS
T
J
= 125 °C
THERMAL - MECHANICAL SPECIFICATIONS
PARAMETER
Maximum junction temperature range
Maximum storage temperature range
Maximum thermal resistance,
junction to case per leg
Typical thermal resistance,
case to heatsink
Maximum thermal resistance,
junction to ambient
Approximate weight
minimum
maximum
SYMBOL
T
J
T
Stg
R
thJC
R
thCS
R
thJA
DC operation
Mounting surface, smooth and greased
(Only for TO-262)
DC operation
(For D
2
PAK and TO-262)
TEST CONDITIONS
VALUES
- 65 to 150
- 65 to 175
1.5
0.50
50
2
0.07
Non-lubricated threads
Case style D
2
PAK
Case style TO-262
6 (5)
12 (10)
g
oz.
kgf · cm
(lbf · in)
°C/W
UNITS
°C
Mounting torque
Marking device
MBRB4045CT
MBR4045CT-1
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2
For technical questions, contact: diodes-tech@vishay.com
Document Number: 93981
Revision: 21-Aug-08
MBRB4045CT/MBR4045CT-1
Schottky Rectifier, 2 x 20 A
Vishay High Power Products
1000
1000
I
R
- Reverse Current (mA)
100
10
1
0.1
0.01
0.001
T
J
= 150 °C
T
J
= 125 °C
T
J
= 100 °C
T
J
= 75 °C
T
J
= 50 °C
T
J
= 25 °C
I
F
- Instantaneous
Forward Current (A)
100
10
T
J
= 150 °C
T
J
= 125 °C
T
J
= 25 °C
1
0
0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0
0
5
10
15
20
25
30
35
40
45
V
FM
- Forward Voltage Drop (V)
Fig. 1 - Maximum Forward Voltage Drop Characteristics
(Per Leg)
V
R
- Reverse Voltage (V)
Fig. 2 - Typical Values of Reverse Current vs.
Reverse Voltage (Per Leg)
900
C
T
- Junction Capacitance (pF)
800
700
600
500
400
300
200
T
J
= 25 °C
0
10
20
30
40
50
V
R
- Reverse Voltage (V)
Fig. 3 - Typical Junction Capacitance vs. Reverse Voltage (Per Leg)
Z
thJC
- Thermal Impedance (°C/W)
10
1
P
DM
0.1
Single
pulse
(thermal resistance)
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
t
1
t
2
0.01
Notes:
1. Duty factor D = t
1
/t
2
2. Peak T
J
= P
DM
x Z
thJC
+ T
C
0.001
0.00001
0.0001
0.001
0.01
0.1
1
10
t
1
- Rectangular Pulse Duration (s)
Fig. 4 - Maximum Thermal Impedance Z
thJC
Characteristics (Per Leg)
Document Number: 93981
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
3
MBRB4045CT/MBR4045CT-1
Vishay High Power Products
Schottky Rectifier, 2 x 20 A
160
20
18
Allowable Case Temperature (°C)
Average Power Loss (W)
140
16
14
12
10
8
6
4
2
0
DC
D = 0.75
D = 0.50
D = 0.33
D = 0.25
D = 0.20
RMS limit
120
Square
wave (D = 0.50)
Rated V
R
applied
100
See
note (1)
DC
80
0
5
10
15
20
25
30
0
5
10
15
20
25
30
35
I
F(AV)
- Average Forward Current (A)
Fig. 5 - Maximum Allowable Case Temperature vs.
Average Forward Current
I
F(AV)
- Average Forward Current (A)
Fig. 6 - Forward Power Loss Characteristics
I
FSM
- Non-Repetitive Surge Current (A)
1000
At any rated load condition
and with rated V
RRM
applied
following surge
100
10
100
1000
10 000
t
p
- Square Wave Pulse Duration (µs)
Fig. 7 - Maximum Non-Repetitive Surge Current (Per Leg)
(1)
Note
Formula used: T
C
= T
J
- (Pd + Pd
REV
) x R
thJC
;
Pd = Forward power loss = I
F(AV)
x V
FM
at (I
F(AV)
/D) (see fig. 6);
Pd
REV
= Inverse power loss = V
R1
x I
R
(1 - D); I
R
at V
R1
= Rated V
R
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For technical questions, contact: diodes-tech@vishay.com
Document Number: 93981
Revision: 21-Aug-08
MBRB4045CT/MBR4045CT-1
Schottky Rectifier, 2 x 20 A
Vishay High Power Products
ORDERING INFORMATION TABLE
Device code
MBR
1
B
2
40
3
45
4
CT
5
-1
6
TRL
7
-
8
1
2
3
4
5
6
7
-
-
Essential part number
B = D
2
PAK
6
None
None = TO-262
6
= -1
Current rating (40 = 40 A)
Voltage rating (45 = 45 V)
CT = Essential part number
None = D
2
PAK
-1 = TO-262
2
= B
2
None
-
-
-
-
None = Tube (50 pieces)
TRL = Tape and reel (left oriented - for D
2
PAK only)
TRR = Tape and reel (right oriented - for D
2
PAK only)
8
-
None = Standard production
PbF = Lead (Pb)-free (for TO-262 and D
2
PAK tube)
P = Lead (Pb)-free (for D
2
PAK TRR and TRL)
LINKS TO RELATED DOCUMENTS
Dimensions
Part marking information
Packaging information
SPICE model
http://www.vishay.com/doc?95014
http://www.vishay.com/doc?95008
http://www.vishay.com/doc?95032
http://www.vishay.com/doc?95296
Document Number: 93981
Revision: 21-Aug-08
For technical questions, contact: diodes-tech@vishay.com
www.vishay.com
5
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