International Rrectifier MBRB4045CTPbF, MBR4045CT-1PbF User Manual
Bulletin PD-21047 rev. A 07/06
Base
A
Base
A
MBRB4045CTPbF
MBR4045CT-1PbF
SCHOTTKY RECTIFIER 40 Amp
I
= 40Amp
F(AV)
VR = 45V
Major Ratings and Characteristics
Characteristics Values Units
I
Rectangular waveform 40 A
F(AV)
(Per Device)
I
@ TC = 118°C 40 A
FRM
(Per Leg)
V
RRM
I
@ tp = 5 μs sine 900 A
FSM
45 V
VF@ 20 Apk, TJ = 125°C 0.58 V
TJrange - 65 t o 150 °C
Case Styles
MBRB4045CTPbF MBR4045CT-1PbF
Description/Features
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 battery protection.
150° C TJ operation
Center tap TO-220, D2Pak 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
Lead-Free ("PbF" suffix)
1
node
D2PAK
Common
Cathode
Common
Cathode
2
2
3
Anode
1
node
TO-262
Common
Cathode
Common
Cathode
2
2
3
Anode
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MBRB4045CTPbF, MBR4045CT-1PbF
Bulletin PD-21047 rev. A 07/06
Voltage Ratings
Parameters
V
Max. DC Reverse Voltage (V)
R
V
Max. Working Peak Reverse Voltage (V)
RWM
MBRB4045CTPbF, MBR4045CT-1PbF
45
Absolute Maximum Ratings
Parameters Values Units Conditions
I
Max. Average Forward (Per Leg) 20 A @ TC = 118° C, (Rated VR)
F(AV)
Current (Per Device) 40
I
Peak Repetitive Forward 40 A Rated VR, square wave, 20kHz
FRM
Current (Per Leg) TC = 118° C
I
Max.Peak One Cycle Non -Repetitive 9 00 A 5μs Sine or 3μs Rect. pulse
FSM
Surge Current (Per Leg) 210 10ms Sine or 6ms Rect. pulse
EASNon -Repetitive Avalanche Energy 20 A TJ = 25°C, IAS = 3Amps, L = 4.40mH
(Per Leg)
IARRepetitive Avalanche Current 3 A Current decaying linearty to zero in 1 μsec
(Per Leg) Frequency limited by TJ max. VA = 1.5 x VR typical
Following any rated load
condition and with rated
applied
V
RRM
Electrical Specifications
Parameters Values Units Conditions
VFMMax. Forward Voltage Drop 0.60 V @ 20A TJ = 25 °C
0.78 V @ 40A
(1) 0.58 V @ 20A TJ = 125 °C
0.75 V @ 40A
IRMMax. Instantaneus Reverse Current 1 mA TJ = 25 °C Rated DC voltage
(1) 50 mA TJ = 100 °C
95 mA TJ = 125 °C
CTMax. Junction Capacitance 900 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 10000 V/ μs (Rated VR)
Thermal-Mechanical Specifications
Parameters Values Units Conditions
TJMax. Junction Temperature Range -65 to 150 °C
T
Max. Storage Temperature Range -65 to 175 °C
stg
R
Max. Thermal Resistance 1.5 °C/W DC operation
thJC
Junction to Case (Per Leg)
R
Typical Thermal Resistance 0.50 °C/W Mounting surface, smooth and greased
thCS
Case to Heatsink Only for TO-220
R
Max. Thermal Resistance 50 °C/W DC operation
thJA
Junction to Ambient For D2Pak and TO-262
wt Approximate Weight 2 (0.07) g (oz.)
T Mounting Torque Min. 6 (5) Non-lubricated threads
Max. 12 (10)
Device Marking MBRB4045CT Case style D2Pak
MBR4045CT-1 Case style TO-262
Kg-cm
(Ibf-in)
(1) Pulse Width < 300μs, Duty Cycle <2%
2
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(A)
1
0 0.2 0.4 0.6 0.8 1 1.2 1.4 1.6 1.8 2
0
0 5 10 15 20 25 30 35 40 45
0
0.00001 0.0001 0.001 0.01 0.1 1 10
2
3
4
5
6
7
8
9
0 1020304050
F
000
100
MBRB4045CTPbF, MBR4045CT-1PbF
Bulletin PD-21047 rev. A 07/06
1000
T = 150˚C
100
(mA)
R
10
0.1
Reverse Current - I
0.01
.001
J
125˚C
100˚C
1
75˚C
50˚C
25˚C
Reverse Voltage - VR (V)
Fig. 2 - Typical Values Of Reverse Current
Vs. Reverse Voltage (Per Leg)
T = 25˚C
J
10
Instantaneous Forward Current - I
T = 150˚C
J
T = 125˚C
J
T = 25˚C
J
(p F)
T
00
00
00
00
00
00
00
Junction Capacitance - C
1
Forward Voltage Drop - VFM (V)
Fig. 1 - Max. Forward Voltage Drop Characteristics
(Per Leg)
00
Reverse Voltage - VR (V)
Fig. 3 - Typical Junction Capacitance
Vs. Reverse Voltage (Per Leg)
10
D = 0.75
D = 0.50
1
(°C/W)
thJC
Thermal Impedance Z
0.1
0.01
D = 0.33
D = 0.25
D = 0.20
Single Pulse
(Thermal Resistance)
P
DM
t
1
t
2
Notes:
1. Duty factor D = t1/ t2
2. Peak Tj = Pdm x ZthJC + Tc
.001
t1 , Rectangular Pulse Duration (Seconds)
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Fig. 4 - Max. Thermal Impedance Z
Characteristics (Per Leg)
thJC
3
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