Vishay MBR4045WT Data Sheet
Bulletin PD-20715 rev. A 09/00
MBR4045WT
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 = 125°C 40 A
FRM
(Per Leg)
V
RRM
I
@ tp = 5 µs sine 1020 A
FSM
VF@ 20 Apk, TJ = 125°C 0.56 V
TJrange - 55 to 15 0 °C
45 V
Description/Features
The MBR4045WT 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 TJ operation
Center tap TO-247 package
High purity, high temperature epoxy encapsulation for
enhanced mechanical strength and moisture resistance
Very low forward voltage drop
High frequency operation
Guard ring for enhanced ruggedness and long term
reliability
Case Styles
MBR4045WT
TO-247AC
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MBR4045WT
Bulletin PD-20715 rev. A 09/00
Voltage Ratings
Part number MBR4045WT
VRMax. DC Reverse Voltage (V)
V
Max. Working Peak Reverse Voltage (V)
RWM
45
Absolute Maximum Ratings
Parameters Values Units Conditions
I
Max. Average Forward (Per Leg) 20 @ TC = 125°C, 50% duty cycle, rectangular waveform
F(AV)
Current (Per Device) 40
I
Peak Repetitive Forward 40 A Rated VR , square wave, 20kHz
FRM
Current (Per Leg) TC = 125° C
I
Max.Peak One Cycle Non-Repetitive 1020 5µs Sine or 3µs Rect. pulse
FSM
Surge Current ( Per Leg) See fig.7 265 10ms Sine or 6ms Rect. pulse
EASNon-Repetitive Avalanche Energy 20 mJ TJ = 25 °C, I
(Per Leg)
IARRepetitive Avalanche Current 3 A Current decaying linearly to zero in 1 µsec
(Per Leg) Frequency limited by T
A
Following any rated
A
= 3 Amps, L = 4.40 mH
AS
load condition and with
rated V
max. VA = 1.5 x VR typical
J
RRM
applied
Electrical Specifications
Parameters Values Units Conditions
VFMMax. Forward Voltage Drop 0.59 V @ 20A
0.78 V @ 40A
(1) 0.56 V @ 20A
0.72 V @ 40A
IRMMax. Instantaneus Reverse Current 1.75 m A TJ = 25 °C
(1) 50 m A TJ = 100 °C
85 mA TJ = 125 °C
V
Threshold Voltage 0.29 V TJ = TJ max.
F(TO)
r
Forward Slope Resistance 10.3 mΩ
t
CTMax. Junction Capacitance 900 pF VR = 5VDC (test signal range 100Khz to 1Mhz) 25°C
LSTypical Series Inductance 7.5 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 -55 to 150 °C
T
Max. Storage Temperature Range -55 to 175 °C
stg
R
Max. Thermal Resistance 1.4 °C/W DC operation
thJC
Junction to Case (Per Package)
R
Typical Thermal Resistance 0.7 °C/W Mounting surface, smooth and greased
thCS
Case to Heatsink
wt Approximate Weight 6 (0.21) g (oz.)
T Mounting Torque Min. 6 (5)
Max. 12 (10)
Case Style TO-247AC (TO-3P) JEDEC
Kg-cm
(Ibf-in)
TJ = 25 °C
TJ = 125 °C
Rated DC voltage
(1) Pulse Width < 300µs, Duty Cycle <2%
2
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